Merge pull request 'Fix text overlapping in tree explorer' (#14) from feature/icons into main

Reviewed-on: #14

README.md

@@ -4,7 +4,7 @@
 <picture>
   <source media="(prefers-color-scheme: dark)" srcset="logo_dark.svg">
   <source media="(prefers-color-scheme: light)" srcset="logo_light.svg">
-  <img alt="Helix" height="128" src="logo_light.svg">
+  <img alt="Helix" height="128" src="logo_dark.svg">
 </picture>
 </h1>
 
@@ -18,7 +18,7 @@
 
 ![Screenshot](./screenshot.png)
 
-A Kakoune / Neovim inspired editor, written in Rust.
+This is a fork of helix, a Kakoune / Neovim inspired editor, written in Rust.
 
 The editing model is very heavily based on Kakoune; during development I found
 myself agreeing with most of Kakoune's design decisions.
@@ -43,6 +43,16 @@ It's a terminal-based editor first, but I'd like to explore a custom renderer
 Note: Only certain languages have indentation definitions at the moment. Check
 `runtime/queries/<lang>/` for `indents.scm`.
 
+# Additional Features of helix-plus
+
+- [File Explorer](https://github.com/helix-editor/helix/pull/5768)
+  - Added automatic update of the current file in the tree view
+  - Added icon support
+  - Added `--show-explorer` CLI flag to show the explorer when opening helix
+- [Icons](https://github.com/helix-editor/helix/pull/2869)
+- `rm` command to delete the file associated with the current buffer
+- `dracula-purple` theme which is a combination of `dracula` and `boo_berry`
+
 # Installation
 
 [Installation documentation](https://docs.helix-editor.com/install.html).

book/src/SUMMARY.md

@@ -10,6 +10,7 @@
 - [Migrating from Vim](./from-vim.md)
 - [Configuration](./configuration.md)
   - [Themes](./themes.md)
+  - [Icons](./icons.md)
   - [Key remapping](./remapping.md)
   - [Languages](./languages.md)
 - [Guides](./guides/README.md)

book/src/configuration.md

@@ -11,6 +11,7 @@ Example config:
 
 ```toml
 theme = "onedark"
+icons = "nerdfonts"
 
 [editor]
 line-number = "relative"
@@ -108,6 +109,7 @@ The following statusline elements can be configured:
 | `file-line-ending` | The file line endings (CRLF or LF) |
 | `total-line-numbers` | The total line numbers of the opened file |
 | `file-type` | The type of the opened file |
+| `file-type-icon` | The icon representing the language of the open file, or else its file type (see `[editor.icons]` section) |
 | `diagnostics` | The number of warnings and/or errors |
 | `workspace-diagnostics` | The number of warnings and/or errors on workspace |
 | `selections` | The number of active selections |
@@ -185,6 +187,8 @@ auto-pairs = false # defaults to `true`
 The default pairs are <code>(){}[]''""``</code>, but these can be customized by
 setting `auto-pairs` to a TOML table:
 
+Example
+
 ```toml
 [editor.auto-pairs]
 '(' = ')'
@@ -322,6 +326,18 @@ Currently unused
 
 Currently unused
 
+### `[editor.icons]` Section
+
+Option for displaying icons within the editor.
+
+> Warning: some symbols (such as file-type and symbol-kind icons that you would see in the picker) are not available in the "default" icon set. They usually require a patched font such as [NerdFonts](https://www.nerdfonts.com/) to be installed and configured in your terminal emulator, and the corresponding icon set to be configured in the editor (for example, using `icons = "nerdfonts"` in your configuration file).
+
+| Key                 | Description                                                  | Default |
+| ---                 | ---                                                          | ---     |
+| `picker`            | Whether icons in pickers are enabled.                        | `true`  |
+| `bufferline`        | Whether icons in the buffer line are enabled.                | `true`  |
+| `statusline`        | Whether icons in the status line are enabled.                | `true`  |
+
 ### `[editor.soft-wrap]` Section
 
 Options for soft wrapping lines that exceed the view width:
@@ -343,3 +359,11 @@ max-wrap = 25 # increase value to reduce forced mid-word wrapping
 max-indent-retain = 0
 wrap-indicator = ""  # set wrap-indicator to "" to hide it
 ```
+
+### `[editor.explorer]` Section
+Sets explorer side width and style.
+
+ | Key            | Description                                                                              | Default |
+ | ---            | -----------                                                                              | ------- |
+ | `column-width` | explorer side width                                                                      | 30      |
+ | `position`     | explorer widget position, `left` or `right`                                              | `left`  |

book/src/generated/typable-cmd.md

@@ -29,6 +29,7 @@
 | `:cquit`, `:cq` | Quit with exit code (default 1). Accepts an optional integer exit code (:cq 2). |
 | `:cquit!`, `:cq!` | Force quit with exit code (default 1) ignoring unsaved changes. Accepts an optional integer exit code (:cq! 2). |
 | `:theme` | Change the editor theme (show current theme if no name specified). |
+| `:icons` | Change the editor icon flavor (show current flavor if no name specified). |
 | `:clipboard-yank` | Yank main selection into system clipboard. |
 | `:clipboard-yank-join` | Yank joined selections into system clipboard. A separator can be provided as first argument. Default value is newline. |
 | `:primary-clipboard-yank` | Yank main selection into system primary clipboard. |

book/src/icons.md

@@ -0,0 +1,140 @@
+# Icons
+
+## Requirements
+
+File-type and symbol-kind icons require a patched font such as [NerdFonts](https://www.nerdfonts.com/) to be installed and configured in your terminal emulator. These types of fonts are called *patched* fonts because they define arbitrary symbols for a range of Unicode values, which may vary from one font to another. Therefore, you need to use an icon flavor adapted to your configured terminal font, otherwise you may end up with undefined characters and mismatched icons.
+
+To enable file-type and symbol-kind icons within the editor, see the `[editor.icons]` section of the [configuration file](./configuration.md).
+
+To use an icon flavor add `icons = "<name>"` to your [`config.toml`](./configuration.md) at the very top of the file before the first section or select it during runtime using `:icons <name>`.
+
+## Creating an icon flavor
+
+Create a file with the name of your icon flavor as file name (i.e `myicons.toml`) and place it in your `icons` directory (i.e `~/.config/helix/icons`). The directory might have to be created beforehand.
+
+The name "default" is reserved for the builtin icons and cannot be overridden by user defined icons.
+
+The name of the icon flavor must be set using the `name` key.
+
+The default icons.toml can be found [here](https://github.com/helix-editor/helix/blob/master/icons.toml), and user submitted icon flavors [here](https://github.com/helix-editor/helix/blob/master/runtime/icons). 
+
+Icons flavors have five sections:
+
+- Diagnostics
+- Breakpoints
+- Diff
+- Symbol kinds
+- Mime types
+
+Each line in these sections is specified as below:
+
+```toml
+key = { icon = "…", color = "#ff0000" }
+```
+
+where `key` represents what you want to style, `icon` specifies the character to show as the icon, and `color` specifies the foreground color of the icon. `color` can be omitted to defer to the defaults.
+
+### Diagnostic icons
+
+The `[diagnostic]` section defines four **required** diagnostic icons:
+
+- `error`
+- `warning`
+- `info`
+- `hint`
+
+These icons appear in the gutter, in the diagnostic pickers as well as in the status line diagnostic component.
+By default, they have the foreground color defined in the current theme's corresponding keys.
+
+> An icon flavor TOML file must define all of these icons.
+
+### Diff icons
+
+The `[diff]` section defines three **required** diffing icons:
+
+- `added`
+- `deleted`
+- `modified`
+
+These icons appear in the gutter.
+By default, they have the foreground color defined in the current theme's corresponding keys.
+
+> An icon flavor TOML file must define all of these icons.
+
+### Breakpoint icons
+
+The `[breakpoint]` section defines two **required** breakpoint icons:
+
+- `verified`
+- `unverified`
+
+These icons appear in the gutter while using the Debug Adapter Protocol (DAP). Their color depends on the breakpoint's condition and log message, it cannot be overridden by the `color` key.
+
+> An icon flavor TOML file must define all of these icons.
+
+### Symbol kinds icons
+
+The `[symbol-kind]` section defines **optional** icons for the following required LSP-defined symbol kinds:
+
+- `file` (this icon is also used on files for which the mime type has not been defined in the next section, as a "generic file" icon)
+- `module`
+- `namespace`
+- `package`
+- `class`
+- `method`
+- `property`
+- `field`
+- `constructor`
+- `enumeration`
+- `interface`
+- `variable`
+- `function`
+- `constant`
+- `string`
+- `number`
+- `boolean`
+- `array`
+- `object`
+- `key`
+- `null`
+- `enum-member`
+- `structure`
+- `event`
+- `operator`
+- `type-parameter`
+
+By default, these icons have the same style as the loaded theme's `keyword` key. Their style can be customized using the `symbolkind` key in the theme configuration file, or it can individually be overridden by their `color` key.
+
+> An icon flavor TOML file must define either none or all of these icons.
+
+### Mime types icons
+
+The `[mime-type]` section defines **optional** icons for mime types or filename, such as:
+
+```toml
+[mime-type]
+".bashrc" = { icon = "…", color = "#…" }
+"LICENSE" = { icon = "…", color = "#…" }
+"rs" = { icon = "…", color = "#…" }
+```
+
+These icons appear in the file picker, in the statusline `file-type-icon` component, and in the bufferline (when enabled).
+
+> An icon flavor TOML file can define none, some or all of these icons.
+
+### Inheritance
+
+Extend upon other icon flavors by setting the `inherits` property to an existing theme.
+
+```toml
+inherits = "nerdfonts"
+name = "custom_nerdfonts"
+
+# Override the icon for generic files:
+[symbol-kind]
+file = {icon = "…"}
+
+# Override the icon for Rust files
+[mime-type]
+"rs" = { icon = "…", color = "#…" }
+```

book/src/keymap.md

@@ -291,6 +291,8 @@ This layer is a kludge of mappings, mostly pickers.
 | `R`     | Replace selections by clipboard contents                                | `replace_selections_with_clipboard`        |
 | `/`     | Global search in workspace folder                                       | `global_search`                            |
 | `?`     | Open command palette                                                    | `command_palette`                          |
+| `e`     | Reveal current file in explorer                                         | `reveal_current_file`                      |
+
 
 > 💡 Global search displays results in a fuzzy picker, use `Space + '` to bring it back up after opening a file.
 
@@ -442,3 +444,7 @@ Keys to use within prompt, Remapping currently not supported.
 | `Tab`                                       | Select next completion item                                             |
 | `BackTab`                                   | Select previous completion item                                         |
 | `Enter`                                     | Open selected                                                           |
+
+# File explorer
+
+Press `?` to see keymaps. Remapping currently not supported.

book/src/themes.md

@@ -316,14 +316,15 @@ These scopes are used for theming the editor interface:
 | `ui.cursorline.secondary`         | The lines of any other cursors ([if cursorline is enabled][editor-section])                    |
 | `ui.cursorcolumn.primary`         | The column of the primary cursor ([if cursorcolumn is enabled][editor-section])                |
 | `ui.cursorcolumn.secondary`       | The columns of any other cursors ([if cursorcolumn is enabled][editor-section])                |
-| `warning`                         | Diagnostics warning (gutter)                                                                   |
-| `error`                           | Diagnostics error (gutter)                                                                     |
-| `info`                            | Diagnostics info (gutter)                                                                      |
-| `hint`                            | Diagnostics hint (gutter)                                                                      |
+| `warning`                         | Diagnostics warning icon (gutter, statusline, and diagnostic pickers)                          |
+| `error`                           | Diagnostics error icon (gutter, statusline, and diagnostic pickers)                            |
+| `info`                            | Diagnostics info icon (gutter, statusline, and diagnostic pickers)                             |
+| `hint`                            | Diagnostics hint icon (gutter, statusline, and diagnostic pickers)                             |
 | `diagnostic`                      | Diagnostics fallback style (editing area)                                                      |
 | `diagnostic.hint`                 | Diagnostics hint (editing area)                                                                |
 | `diagnostic.info`                 | Diagnostics info (editing area)                                                                |
 | `diagnostic.warning`              | Diagnostics warning (editing area)                                                             |
 | `diagnostic.error`                | Diagnostics error (editing area)                                                               |
+| `symbolkind`                      | Symbol kind icons (symbol picker)                                                              |
 
 [editor-section]: ./configuration.md#editor-section

helix-loader/src/lib.rs

@@ -1,8 +1,14 @@
 pub mod config;
 pub mod grammar;
 
+use anyhow::{anyhow, Result};
 use etcetera::base_strategy::{choose_base_strategy, BaseStrategy};
-use std::path::{Path, PathBuf};
+use once_cell::sync::Lazy;
+use std::{
+    collections::{HashMap, HashSet},
+    path::{Path, PathBuf},
+};
+use toml::Value;
 
 pub const VERSION_AND_GIT_HASH: &str = env!("VERSION_AND_GIT_HASH");
 
@@ -154,8 +160,6 @@ pub fn log_file() -> PathBuf {
 /// where one usually wants to override or add to the array instead of
 /// replacing it altogether.
 pub fn merge_toml_values(left: toml::Value, right: toml::Value, merge_depth: usize) -> toml::Value {
-    use toml::Value;
-
     fn get_name(v: &Value) -> Option<&str> {
         v.get("name").and_then(Value::as_str)
     }
@@ -209,6 +213,115 @@ pub fn merge_toml_values(left: toml::Value, right: toml::Value, merge_depth: usi
     }
 }
 
+/// Recursively load a TOML document, merging with any inherited parent files.
+///
+/// The paths that have been visited in the inheritance hierarchy are tracked
+/// to detect and avoid cycling.
+///
+/// It is possible for one file to inherit from another file with the same name
+/// so long as the second file is in a search directory with lower priority.
+/// However, it is not recommended that users do this as it will make tracing
+/// errors more difficult.
+pub fn load_inheritable_toml(
+    name: &str,
+    search_directories: &[PathBuf],
+    visited_paths: &mut HashSet<PathBuf>,
+    default_toml_data: &HashMap<&str, &Lazy<Value>>,
+    merge_toml_docs: fn(Value, Value) -> Value,
+) -> Result<Value> {
+    let path = get_toml_path(name, search_directories, visited_paths)?;
+
+    let toml_doc = load_toml(&path)?;
+
+    let inherits = toml_doc.get("inherits");
+
+    let toml_doc = if let Some(parent_toml_name) = inherits {
+        let parent_toml_name = parent_toml_name.as_str().ok_or_else(|| {
+            anyhow!(
+                "{:?}: expected 'inherits' to be a string: {}",
+                path,
+                parent_toml_name
+            )
+        })?;
+
+        let parent_toml_doc = match default_toml_data.get(parent_toml_name) {
+            Some(p) => (**p).clone(),
+            None => load_inheritable_toml(
+                parent_toml_name,
+                search_directories,
+                visited_paths,
+                default_toml_data,
+                merge_toml_docs,
+            )?,
+        };
+
+        merge_toml_docs(parent_toml_doc, toml_doc)
+    } else {
+        toml_doc
+    };
+
+    Ok(toml_doc)
+}
+
+/// Returns the path to the TOML document with the given name
+///
+/// Ignores paths already visited and follows directory priority order.
+fn get_toml_path(
+    name: &str,
+    search_directories: &[PathBuf],
+    visited_paths: &mut HashSet<PathBuf>,
+) -> Result<PathBuf> {
+    let filename = format!("{}.toml", name);
+
+    let mut cycle_found = false; // track if there was a path, but it was in a cycle
+    search_directories
+        .iter()
+        .find_map(|dir| {
+            let path = dir.join(&filename);
+            if !path.exists() {
+                None
+            } else if visited_paths.contains(&path) {
+                // Avoiding cycle, continuing to look in lower priority directories
+                cycle_found = true;
+                None
+            } else {
+                visited_paths.insert(path.clone());
+                Some(path)
+            }
+        })
+        .ok_or_else(|| {
+            if cycle_found {
+                anyhow!("Toml: cycle found in inheriting: {}", name)
+            } else {
+                anyhow!("Toml: file not found for: {}", name)
+            }
+        })
+}
+
+// Loads the TOML data as `toml::Value`
+fn load_toml(path: &Path) -> Result<Value> {
+    let data = std::fs::read_to_string(path)?;
+    let value = toml::from_str(&data)?;
+
+    Ok(value)
+}
+
+/// Returns the names of the TOML documents within a directory
+pub fn read_toml_names(path: &Path) -> Vec<String> {
+    std::fs::read_dir(path)
+        .map(|entries| {
+            entries
+                .filter_map(|entry| {
+                    let entry = entry.ok()?;
+                    let path = entry.path();
+                    (path.extension()? == "toml")
+                        .then(|| path.file_stem().unwrap().to_string_lossy().into_owned())
+                })
+                .collect()
+        })
+        .unwrap_or_default()
+}
+
 #[cfg(test)]
 mod merge_toml_tests {
     use std::str;

helix-term/.gitignore

@@ -1 +1,4 @@
 /target
+
+# This folder is used by `test_explorer` to create temporary folders needed for testing
+test_explorer

helix-term/src/application.rs

@@ -11,7 +11,7 @@ use helix_view::{
     document::DocumentSavedEventResult,
     editor::{ConfigEvent, EditorEvent},
     graphics::Rect,
-    theme,
+    icons, theme,
     tree::Layout,
     Align, Editor,
 };
@@ -21,11 +21,11 @@ use tui::backend::Backend;
 use crate::{
     args::Args,
     commands::apply_workspace_edit,
-    compositor::{Compositor, Event},
+    compositor::{self, Compositor, Event},
     config::Config,
     job::Jobs,
     keymap::Keymaps,
-    ui::{self, overlay::overlaid},
+    ui::{self, overlay::overlaid as overlayed, Explorer},
 };
 
 use log::{debug, error, warn};
@@ -69,6 +69,7 @@ pub struct Application {
 
     #[allow(dead_code)]
     theme_loader: Arc<theme::Loader>,
+    icons_loader: Arc<icons::Loader>,
     #[allow(dead_code)]
     syn_loader: Arc<syntax::Loader>,
 
@@ -111,9 +112,9 @@ impl Application {
 
         use helix_view::editor::Action;
 
-        let mut theme_parent_dirs = vec![helix_loader::config_dir()];
-        theme_parent_dirs.extend(helix_loader::runtime_dirs().iter().cloned());
-        let theme_loader = std::sync::Arc::new(theme::Loader::new(&theme_parent_dirs));
+        let mut theme_and_icons_parent_dirs = vec![helix_loader::config_dir()];
+        theme_and_icons_parent_dirs.extend(helix_loader::runtime_dirs().iter().cloned());
+        let theme_loader = std::sync::Arc::new(theme::Loader::new(&theme_and_icons_parent_dirs));
 
         let true_color = config.editor.true_color || crate::true_color();
         let theme = config
@@ -131,6 +132,21 @@ impl Application {
             })
             .unwrap_or_else(|| theme_loader.default_theme(true_color));
 
+        let icons_loader = std::sync::Arc::new(icons::Loader::new(&theme_and_icons_parent_dirs));
+        let icons = config
+            .icons
+            .as_ref()
+            .and_then(|icons| {
+                icons_loader
+                    .load(icons, &theme, true_color)
+                    .map_err(|e| {
+                        log::warn!("failed to load icons `{}` - {}", icons, e);
+                        e
+                    })
+                    .ok()
+            })
+            .unwrap_or_else(|| icons_loader.default(&theme));
+
         let syn_loader = std::sync::Arc::new(syntax::Loader::new(syn_loader_conf));
 
         #[cfg(not(feature = "integration"))]
@@ -146,16 +162,34 @@ impl Application {
         let mut editor = Editor::new(
             area,
             theme_loader.clone(),
+            icons_loader.clone(),
             syn_loader.clone(),
             Arc::new(Map::new(Arc::clone(&config), |config: &Config| {
                 &config.editor
             })),
         );
 
+        editor.set_theme(theme);
+        editor.set_icons(icons);
+
         let keys = Box::new(Map::new(Arc::clone(&config), |config: &Config| {
             &config.keys
         }));
-        let editor_view = Box::new(ui::EditorView::new(Keymaps::new(keys)));
+        let mut editor_view = Box::new(ui::EditorView::new(Keymaps::new(keys)));
+
+        let mut jobs = Jobs::new();
+
+        if args.show_explorer {
+            let mut context = compositor::Context {
+                editor: &mut editor,
+                scroll: None,
+                jobs: &mut jobs,
+            };
+            let mut explorer = Explorer::new(&mut context)?;
+            explorer.unfocus();
+            editor_view.explorer = Some(explorer);
+        }
+
         compositor.push(editor_view);
 
         if args.load_tutor {
@@ -168,8 +202,8 @@ impl Application {
             if first.is_dir() {
                 std::env::set_current_dir(first).context("set current dir")?;
                 editor.new_file(Action::VerticalSplit);
-                let picker = ui::file_picker(".".into(), &config.load().editor);
-                compositor.push(Box::new(overlaid(picker)));
+                let picker = ui::file_picker(".".into(), &config.load().editor, &editor.icons);
+                compositor.push(Box::new(overlayed(picker)));
             } else {
                 let nr_of_files = args.files.len();
                 for (i, (file, pos)) in args.files.into_iter().enumerate() {
@@ -225,8 +259,6 @@ impl Application {
                 .unwrap_or_else(|_| editor.new_file(Action::VerticalSplit));
         }
 
-        editor.set_theme(theme);
-
         #[cfg(windows)]
         let signals = futures_util::stream::empty();
         #[cfg(not(windows))]
@@ -241,10 +273,11 @@ impl Application {
             config,
 
             theme_loader,
+            icons_loader,
             syn_loader,
 
             signals,
-            jobs: Jobs::new(),
+            jobs,
             lsp_progress: LspProgressMap::new(),
             last_render: Instant::now(),
         };
@@ -413,12 +446,27 @@ impl Application {
         Ok(())
     }
 
+    /// Refresh icons after config change
+    fn refresh_icons(&mut self, config: &Config) -> Result<(), Error> {
+        if let Some(icons) = config.icons.clone() {
+            let true_color = config.editor.true_color || crate::true_color();
+            let icons = self
+                .icons_loader
+                .load(&icons, &self.editor.theme, true_color)
+                .map_err(|err| anyhow::anyhow!("Failed to load icons `{}`: {}", icons, err))?;
+            self.editor.set_icons(icons);
+        }
+
+        Ok(())
+    }
+
     fn refresh_config(&mut self) {
         let mut refresh_config = || -> Result<(), Error> {
             let default_config = Config::load_default()
                 .map_err(|err| anyhow::anyhow!("Failed to load config: {}", err))?;
             self.refresh_language_config()?;
             self.refresh_theme(&default_config)?;
+            self.refresh_icons(&default_config)?;
             // Store new config
             self.config.store(Arc::new(default_config));
             Ok(())

helix-term/src/args.rs

@@ -10,6 +10,7 @@ pub struct Args {
     pub health: bool,
     pub health_arg: Option<String>,
     pub load_tutor: bool,
+    pub show_explorer: bool,
     pub fetch_grammars: bool,
     pub build_grammars: bool,
     pub split: Option<Layout>,
@@ -32,6 +33,7 @@ impl Args {
                 "--version" => args.display_version = true,
                 "--help" => args.display_help = true,
                 "--tutor" => args.load_tutor = true,
+                "--show-explorer" => args.show_explorer = true,
                 "--vsplit" => match args.split {
                     Some(_) => anyhow::bail!("can only set a split once of a specific type"),
                     None => args.split = Some(Layout::Vertical),

helix-term/src/commands.rs

@@ -6,7 +6,7 @@ pub use dap::*;
 use helix_vcs::Hunk;
 pub use lsp::*;
 use tokio::sync::oneshot;
-use tui::widgets::Row;
+use tui::{text::Span, widgets::Row};
 pub use typed::*;
 
 use helix_core::{
@@ -34,6 +34,7 @@ use helix_view::{
     clipboard::ClipboardType,
     document::{FormatterError, Mode, SCRATCH_BUFFER_NAME},
     editor::{Action, Motion},
+    icons::Icons,
     info::Info,
     input::KeyEvent,
     keyboard::KeyCode,
@@ -472,6 +473,8 @@ impl MappableCommand {
         record_macro, "Record macro",
         replay_macro, "Replay macro",
         command_palette, "Open command palette",
+        open_or_focus_explorer, "Open or focus explorer",
+        reveal_current_file, "Reveal current file in explorer",
     );
 }
 
@@ -1989,11 +1992,12 @@ fn global_search(cx: &mut Context) {
     impl ui::menu::Item for FileResult {
         type Data = Option<PathBuf>;
 
-        fn format(&self, current_path: &Self::Data) -> Row {
+        fn format<'a>(&self, current_path: &Self::Data, icons: Option<&'a Icons>) -> Row {
+            let icon = icons.and_then(|icons| icons.icon_from_path(Some(&self.path)));
             let relative_path = helix_core::path::get_relative_path(&self.path)
                 .to_string_lossy()
                 .into_owned();
-            if current_path
+            let path_span: Span = if current_path
                 .as_ref()
                 .map(|p| p == &self.path)
                 .unwrap_or(false)
@@ -2001,6 +2005,12 @@ fn global_search(cx: &mut Context) {
                 format!("{} (*)", relative_path).into()
             } else {
                 relative_path.into()
+            };
+
+            if let Some(icon) = icon {
+                Row::new([icon.into(), path_span])
+            } else {
+                path_span.into()
             }
         }
     }
@@ -2117,6 +2127,7 @@ fn global_search(cx: &mut Context) {
                 let picker = FilePicker::new(
                     all_matches,
                     current_path,
+                    editor.config().icons.picker.then_some(&editor.icons),
                     move |cx, FileResult { path, line_num }, action| {
                         match cx.editor.open(path, action) {
                             Ok(_) => {}
@@ -2420,7 +2431,7 @@ fn append_mode(cx: &mut Context) {
 
 fn file_picker(cx: &mut Context) {
     let root = find_workspace().0;
-    let picker = ui::file_picker(root, &cx.editor.config());
+    let picker = ui::file_picker(root, &cx.editor.config(), &cx.editor.icons);
     cx.push_layer(Box::new(overlaid(picker)));
 }
 
@@ -2437,15 +2448,58 @@ fn file_picker_in_current_buffer_directory(cx: &mut Context) {
         }
     };
 
-    let picker = ui::file_picker(path, &cx.editor.config());
+    let picker = ui::file_picker(path, &cx.editor.config(), &cx.editor.icons);
     cx.push_layer(Box::new(overlaid(picker)));
 }
 fn file_picker_in_current_directory(cx: &mut Context) {
     let cwd = std::env::current_dir().unwrap_or_else(|_| PathBuf::from("./"));
-    let picker = ui::file_picker(cwd, &cx.editor.config());
+    let picker = ui::file_picker(cwd, &cx.editor.config(), &cx.editor.icons);
     cx.push_layer(Box::new(overlaid(picker)));
 }
 
+fn open_or_focus_explorer(cx: &mut Context) {
+    cx.callback = Some(Box::new(
+        |compositor: &mut Compositor, cx: &mut compositor::Context| {
+            if let Some(editor) = compositor.find::<ui::EditorView>() {
+                match editor.explorer.as_mut() {
+                    Some(explore) => explore.focus(),
+                    None => match ui::Explorer::new(cx) {
+                        Ok(explore) => editor.explorer = Some(explore),
+                        Err(err) => cx.editor.set_error(format!("{}", err)),
+                    },
+                }
+            }
+        },
+    ));
+}
+
+fn reveal_file(cx: &mut Context, path: Option<PathBuf>) {
+    cx.callback = Some(Box::new(
+        |compositor: &mut Compositor, cx: &mut compositor::Context| {
+            if let Some(editor) = compositor.find::<ui::EditorView>() {
+                (|| match editor.explorer.as_mut() {
+                    Some(explorer) => match path {
+                        Some(path) => explorer.reveal_file(path),
+                        None => explorer.reveal_current_file(cx),
+                    },
+                    None => {
+                        editor.explorer = Some(ui::Explorer::new(cx)?);
+                        if let Some(explorer) = editor.explorer.as_mut() {
+                            explorer.reveal_current_file(cx)?;
+                        }
+                        Ok(())
+                    }
+                })()
+                .unwrap_or_else(|err| cx.editor.set_error(err.to_string()))
+            }
+        },
+    ));
+}
+
+fn reveal_current_file(cx: &mut Context) {
+    reveal_file(cx, None)
+}
+
 fn buffer_picker(cx: &mut Context) {
     let current = view!(cx.editor).doc;
 
@@ -2459,7 +2513,7 @@ fn buffer_picker(cx: &mut Context) {
     impl ui::menu::Item for BufferMeta {
         type Data = ();
 
-        fn format(&self, _data: &Self::Data) -> Row {
+        fn format<'a>(&self, _data: &Self::Data, icons: Option<&'a Icons>) -> Row {
             let path = self
                 .path
                 .as_deref()
@@ -2469,6 +2523,9 @@ fn buffer_picker(cx: &mut Context) {
                 None => SCRATCH_BUFFER_NAME,
             };
 
+            // Get the filetype icon, or a "file" icon for scratch buffers
+            let icon = icons.and_then(|icons| icons.icon_from_path(self.path.as_ref()));
+
             let mut flags = String::new();
             if self.is_modified {
                 flags.push('+');
@@ -2477,7 +2534,17 @@ fn buffer_picker(cx: &mut Context) {
                 flags.push('*');
             }
 
-            Row::new([self.id.to_string(), flags, path.to_string()])
+            if let Some(icon) = icon {
+                let icon_span = Span::from(icon);
+                Row::new(vec![
+                    icon_span,
+                    self.id.to_string().into(),
+                    flags.into(),
+                    path.to_string().into(),
+                ])
+            } else {
+                Row::new([self.id.to_string(), flags, path.to_string()])
+            }
         }
     }
 
@@ -2495,6 +2562,7 @@ fn buffer_picker(cx: &mut Context) {
             .map(|doc| new_meta(doc))
             .collect(),
         (),
+        cx.editor.config().icons.picker.then_some(&cx.editor.icons),
         |cx, meta, action| {
             cx.editor.switch(meta.id, action);
         },
@@ -2523,7 +2591,10 @@ fn jumplist_picker(cx: &mut Context) {
     impl ui::menu::Item for JumpMeta {
         type Data = ();
 
-        fn format(&self, _data: &Self::Data) -> Row {
+        fn format<'a>(&self, _data: &Self::Data, icons: Option<&'a Icons>) -> Row {
+            // Get the filetype icon, or a "file" icon for scratch buffers
+            let icon = icons.and_then(|icons| icons.icon_from_path(self.path.as_ref()));
+
             let path = self
                 .path
                 .as_deref()
@@ -2543,7 +2614,13 @@ fn jumplist_picker(cx: &mut Context) {
             } else {
                 format!(" ({})", flags.join(""))
             };
-            format!("{} {}{} {}", self.id, path, flag, self.text).into()
+
+            let path_span: Span = format!("{} {}{} {}", self.id, path, flag, self.text).into();
+            if let Some(icon) = icon {
+                Row::new(vec![icon.into(), path_span])
+            } else {
+                path_span.into()
+            }
         }
     }
 
@@ -2577,6 +2654,7 @@ fn jumplist_picker(cx: &mut Context) {
             })
             .collect(),
         (),
+        cx.editor.config().icons.picker.then_some(&cx.editor.icons),
         |cx, meta, action| {
             cx.editor.switch(meta.id, action);
             let config = cx.editor.config();
@@ -2596,7 +2674,7 @@ fn jumplist_picker(cx: &mut Context) {
 impl ui::menu::Item for MappableCommand {
     type Data = ReverseKeymap;
 
-    fn format(&self, keymap: &Self::Data) -> Row {
+    fn format<'a>(&self, keymap: &Self::Data, _icons: Option<&'a Icons>) -> Row {
         let fmt_binding = |bindings: &Vec<Vec<KeyEvent>>| -> String {
             bindings.iter().fold(String::new(), |mut acc, bind| {
                 if !acc.is_empty() {
@@ -2638,7 +2716,7 @@ pub fn command_palette(cx: &mut Context) {
                 }
             }));
 
-            let picker = Picker::new(commands, keymap, move |cx, command, _action| {
+            let picker = Picker::new(commands, keymap, None, move |cx, command, _action| {
                 let mut ctx = Context {
                     register: None,
                     count: std::num::NonZeroUsize::new(1),

helix-term/src/commands/dap.rs

@@ -8,7 +8,7 @@ use dap::{StackFrame, Thread, ThreadStates};
 use helix_core::syntax::{DebugArgumentValue, DebugConfigCompletion, DebugTemplate};
 use helix_dap::{self as dap, Client};
 use helix_lsp::block_on;
-use helix_view::editor::Breakpoint;
+use helix_view::{editor::Breakpoint, icons::Icons};
 
 use serde_json::{to_value, Value};
 use tokio_stream::wrappers::UnboundedReceiverStream;
@@ -25,7 +25,7 @@ use helix_view::handlers::dap::{breakpoints_changed, jump_to_stack_frame, select
 impl ui::menu::Item for StackFrame {
     type Data = ();
 
-    fn format(&self, _data: &Self::Data) -> Row {
+    fn format<'a>(&self, _data: &Self::Data, _icons: Option<&'a Icons>) -> Row {
         self.name.as_str().into() // TODO: include thread_states in the label
     }
 }
@@ -33,7 +33,7 @@ impl ui::menu::Item for StackFrame {
 impl ui::menu::Item for DebugTemplate {
     type Data = ();
 
-    fn format(&self, _data: &Self::Data) -> Row {
+    fn format<'a>(&self, _data: &Self::Data, _icons: Option<&'a Icons>) -> Row {
         self.name.as_str().into()
     }
 }
@@ -41,7 +41,7 @@ impl ui::menu::Item for DebugTemplate {
 impl ui::menu::Item for Thread {
     type Data = ThreadStates;
 
-    fn format(&self, thread_states: &Self::Data) -> Row {
+    fn format<'a>(&self, thread_states: &Self::Data, _icons: Option<&'a Icons>) -> Row {
         format!(
             "{} ({})",
             self.name,
@@ -76,6 +76,7 @@ fn thread_picker(
             let picker = FilePicker::new(
                 threads,
                 thread_states,
+                None,
                 move |cx, thread, _action| callback_fn(cx.editor, thread),
                 move |editor, thread| {
                     let frames = editor.debugger.as_ref()?.stack_frames.get(&thread.id)?;
@@ -273,6 +274,7 @@ pub fn dap_launch(cx: &mut Context) {
     cx.push_layer(Box::new(overlaid(Picker::new(
         templates,
         (),
+        None,
         |cx, template, _action| {
             let completions = template.completion.clone();
             let name = template.name.clone();
@@ -731,6 +733,7 @@ pub fn dap_switch_stack_frame(cx: &mut Context) {
     let picker = FilePicker::new(
         frames,
         (),
+        None,
         move |cx, frame, _action| {
             let debugger = debugger!(cx.editor);
             // TODO: this should be simpler to find

helix-term/src/commands/lsp.rs

@@ -3,15 +3,12 @@ use helix_lsp::{
     block_on,
     lsp::{
         self, CodeAction, CodeActionOrCommand, CodeActionTriggerKind, DiagnosticSeverity,
-        NumberOrString,
+        NumberOrString, SymbolKind,
     },
     util::{diagnostic_to_lsp_diagnostic, lsp_range_to_range, range_to_lsp_range},
     OffsetEncoding,
 };
-use tui::{
-    text::{Span, Spans},
-    widgets::Row,
-};
+use tui::{text::Span, widgets::Row};
 
 use super::{align_view, push_jump, Align, Context, Editor, Open};
 
@@ -19,6 +16,7 @@ use helix_core::{path, text_annotations::InlineAnnotation, Selection};
 use helix_view::{
     document::{DocumentInlayHints, DocumentInlayHintsId, Mode},
     editor::Action,
+    icons::{self, Icon, Icons},
     theme::Style,
     Document, View,
 };
@@ -57,7 +55,7 @@ impl ui::menu::Item for lsp::Location {
     /// Current working directory.
     type Data = PathBuf;
 
-    fn format(&self, cwdir: &Self::Data) -> Row {
+    fn format<'a>(&self, cwdir: &Self::Data, _icons: Option<&'a Icons>) -> Row {
         // The preallocation here will overallocate a few characters since it will account for the
         // URL's scheme, which is not used most of the time since that scheme will be "file://".
         // Those extra chars will be used to avoid allocating when writing the line number (in the
@@ -91,16 +89,58 @@ impl ui::menu::Item for lsp::SymbolInformation {
     /// Path to currently focussed document
     type Data = Option<lsp::Url>;
 
-    fn format(&self, current_doc_path: &Self::Data) -> Row {
+    fn format<'a>(&self, current_doc_path: &Self::Data, icons: Option<&'a Icons>) -> Row {
+        let icon =
+            icons
+                .and_then(|icons| icons.symbol_kind.as_ref())
+                .and_then(|symbol_kind_icons| match self.kind {
+                    SymbolKind::FILE => symbol_kind_icons.get("file"),
+                    SymbolKind::MODULE => symbol_kind_icons.get("module"),
+                    SymbolKind::NAMESPACE => symbol_kind_icons.get("namespace"),
+                    SymbolKind::PACKAGE => symbol_kind_icons.get("package"),
+                    SymbolKind::CLASS => symbol_kind_icons.get("class"),
+                    SymbolKind::METHOD => symbol_kind_icons.get("method"),
+                    SymbolKind::PROPERTY => symbol_kind_icons.get("property"),
+                    SymbolKind::FIELD => symbol_kind_icons.get("field"),
+                    SymbolKind::CONSTRUCTOR => symbol_kind_icons.get("constructor"),
+                    SymbolKind::ENUM => symbol_kind_icons.get("enumeration"),
+                    SymbolKind::INTERFACE => symbol_kind_icons.get("interface"),
+                    SymbolKind::FUNCTION => symbol_kind_icons.get("function"),
+                    SymbolKind::VARIABLE => symbol_kind_icons.get("variable"),
+                    SymbolKind::CONSTANT => symbol_kind_icons.get("constant"),
+                    SymbolKind::STRING => symbol_kind_icons.get("string"),
+                    SymbolKind::NUMBER => symbol_kind_icons.get("number"),
+                    SymbolKind::BOOLEAN => symbol_kind_icons.get("boolean"),
+                    SymbolKind::ARRAY => symbol_kind_icons.get("array"),
+                    SymbolKind::OBJECT => symbol_kind_icons.get("object"),
+                    SymbolKind::KEY => symbol_kind_icons.get("key"),
+                    SymbolKind::NULL => symbol_kind_icons.get("null"),
+                    SymbolKind::ENUM_MEMBER => symbol_kind_icons.get("enum-member"),
+                    SymbolKind::STRUCT => symbol_kind_icons.get("structure"),
+                    SymbolKind::EVENT => symbol_kind_icons.get("event"),
+                    SymbolKind::OPERATOR => symbol_kind_icons.get("operator"),
+                    SymbolKind::TYPE_PARAMETER => symbol_kind_icons.get("type-parameter"),
+                    _ => Some(&icons::BLANK_ICON),
+                });
+
         if current_doc_path.as_ref() == Some(&self.location.uri) {
-            self.name.as_str().into()
+            if let Some(icon) = icon {
+                Row::new([Span::from(icon), self.name.as_str().into()])
+            } else {
+                self.name.as_str().into()
+            }
         } else {
-            match self.location.uri.to_file_path() {
+            let symbol_span: Span = match self.location.uri.to_file_path() {
                 Ok(path) => {
                     let get_relative_path = path::get_relative_path(path.as_path());
                     format!("{} ({})", &self.name, get_relative_path.to_string_lossy()).into()
                 }
                 Err(_) => format!("{} ({})", &self.name, &self.location.uri).into(),
+            };
+            if let Some(icon) = icon {
+                Row::new([Span::from(icon), symbol_span])
+            } else {
+                Row::from(symbol_span)
             }
         }
     }
@@ -121,7 +161,18 @@ struct PickerDiagnostic {
 impl ui::menu::Item for PickerDiagnostic {
     type Data = (DiagnosticStyles, DiagnosticsFormat);
 
-    fn format(&self, (styles, format): &Self::Data) -> Row {
+    fn format<'a>(&self, (styles, format): &Self::Data, icons: Option<&'a Icons>) -> Row {
+        let icon: Option<&'a Icon> =
+            icons
+                .zip(self.diag.severity)
+                .map(|(icons, severity)| match severity {
+                    DiagnosticSeverity::ERROR => &icons.diagnostic.error,
+                    DiagnosticSeverity::WARNING => &icons.diagnostic.warning,
+                    DiagnosticSeverity::HINT => &icons.diagnostic.hint,
+                    DiagnosticSeverity::INFORMATION => &icons.diagnostic.info,
+                    _ => &icons::BLANK_ICON,
+                });
+
         let mut style = self
             .diag
             .severity
@@ -152,12 +203,20 @@ impl ui::menu::Item for PickerDiagnostic {
             }
         };
 
-        Spans::from(vec![
-            Span::raw(path),
-            Span::styled(&self.diag.message, style),
-            Span::styled(code, style),
-        ])
-        .into()
+        if let Some(icon) = icon {
+            Row::new(vec![
+                icon.into(),
+                Span::raw(path),
+                Span::styled(&self.diag.message, style),
+                Span::styled(code, style),
+            ])
+        } else {
+            Row::new(vec![
+                Span::raw(path),
+                Span::styled(&self.diag.message, style),
+                Span::styled(code, style),
+            ])
+        }
     }
 }
 
@@ -213,11 +272,13 @@ fn sym_picker(
     symbols: Vec<lsp::SymbolInformation>,
     current_path: Option<lsp::Url>,
     offset_encoding: OffsetEncoding,
+    editor: &Editor,
 ) -> FilePicker<lsp::SymbolInformation> {
     // TODO: drop current_path comparison and instead use workspace: bool flag?
     FilePicker::new(
         symbols,
         current_path.clone(),
+        editor.config().icons.picker.then_some(&editor.icons),
         move |cx, symbol, action| {
             let (view, doc) = current!(cx.editor);
             push_jump(view, doc);
@@ -293,6 +354,7 @@ fn diag_picker(
     FilePicker::new(
         flat_diag,
         (styles, format),
+        cx.editor.config().icons.picker.then_some(&cx.editor.icons),
         move |cx, PickerDiagnostic { url, diag }, action| {
             if current_path.as_ref() == Some(url) {
                 let (view, doc) = current!(cx.editor);
@@ -371,7 +433,7 @@ pub fn symbol_picker(cx: &mut Context) {
                     }
                 };
 
-                let picker = sym_picker(symbols, current_url, offset_encoding);
+                let picker = sym_picker(symbols, current_url, offset_encoding, editor);
                 compositor.push(Box::new(overlaid(picker)))
             }
         },
@@ -394,9 +456,9 @@ pub fn workspace_symbol_picker(cx: &mut Context) {
 
     cx.callback(
         future,
-        move |_editor, compositor, response: Option<Vec<lsp::SymbolInformation>>| {
+        move |editor, compositor, response: Option<Vec<lsp::SymbolInformation>>| {
             let symbols = response.unwrap_or_default();
-            let picker = sym_picker(symbols, current_url, offset_encoding);
+            let picker = sym_picker(symbols, current_url, offset_encoding, editor);
             let get_symbols = |query: String, editor: &mut Editor| {
                 let doc = doc!(editor);
                 let language_server = match doc.language_server() {
@@ -476,7 +538,7 @@ pub fn workspace_diagnostics_picker(cx: &mut Context) {
 
 impl ui::menu::Item for lsp::CodeActionOrCommand {
     type Data = ();
-    fn format(&self, _data: &Self::Data) -> Row {
+    fn format<'a>(&self, _data: &Self::Data, _icons: Option<&'a Icons>) -> Row {
         match self {
             lsp::CodeActionOrCommand::CodeAction(action) => action.title.as_str().into(),
             lsp::CodeActionOrCommand::Command(command) => command.title.as_str().into(),
@@ -672,7 +734,7 @@ pub fn code_action(cx: &mut Context) {
 
 impl ui::menu::Item for lsp::Command {
     type Data = ();
-    fn format(&self, _data: &Self::Data) -> Row {
+    fn format<'a>(&self, _data: &Self::Data, _icons: Option<&'a Icons>) -> Row {
         self.title.as_str().into()
     }
 }
@@ -950,6 +1012,7 @@ fn goto_impl(
             let picker = FilePicker::new(
                 locations,
                 cwdir,
+                None,
                 move |cx, location, action| {
                     jump_to_location(cx.editor, location, offset_encoding, action)
                 },

helix-term/src/commands/typed.rs

@@ -115,7 +115,7 @@ fn open(cx: &mut compositor::Context, args: &[Cow<str>], event: PromptEvent) ->
             let callback = async move {
                 let call: job::Callback = job::Callback::EditorCompositor(Box::new(
                     move |editor: &mut Editor, compositor: &mut Compositor| {
-                        let picker = ui::file_picker(path, &editor.config());
+                        let picker = ui::file_picker(path, &editor.config(), &editor.icons);
                         compositor.push(Box::new(overlaid(picker)));
                     },
                 ));
@@ -298,6 +298,30 @@ fn force_buffer_close_all(
     buffer_close_by_ids_impl(cx, &document_ids, true)
 }
 
+fn delete(
+    cx: &mut compositor::Context,
+    _args: &[Cow<str>],
+    event: PromptEvent,
+) -> anyhow::Result<()> {
+    if event != PromptEvent::Validate {
+        return Ok(());
+    }
+
+    cx.block_try_flush_writes()?;
+    let doc = doc_mut!(cx.editor);
+
+    if doc.path().is_none() {
+        bail!("cannot delete a buffer with no associated file on the disk");
+    }
+
+    let doc_id = view!(cx.editor).doc;
+
+    let future = doc.delete();
+    cx.jobs.add(Job::new(future));
+
+    buffer_close_by_ids_impl(cx, &[doc_id], true)
+}
+
 fn buffer_next(
     cx: &mut compositor::Context,
     _args: &[Cow<str>],
@@ -853,6 +877,30 @@ fn theme(
     Ok(())
 }
 
+fn icons(
+    cx: &mut compositor::Context,
+    args: &[Cow<str>],
+    event: PromptEvent,
+) -> anyhow::Result<()> {
+    let true_color = cx.editor.config.load().true_color || crate::true_color();
+    if let PromptEvent::Validate = event {
+        if let Some(flavor_name) = args.first() {
+            let icons = cx
+                .editor
+                .icons_loader
+                .load(flavor_name, &cx.editor.theme, true_color)
+                .map_err(|err| anyhow!("Could not load icon flavor: {}", err))?;
+            cx.editor.set_icons(icons);
+        } else {
+            let name = cx.editor.icons.name().to_string();
+
+            cx.editor.set_status(name);
+        }
+    };
+
+    Ok(())
+}
+
 fn yank_main_selection_to_clipboard(
     cx: &mut compositor::Context,
     _args: &[Cow<str>],
@@ -1332,7 +1380,7 @@ fn lsp_workspace_command(
         let callback = async move {
             let call: job::Callback = Callback::EditorCompositor(Box::new(
                 move |_editor: &mut Editor, compositor: &mut Compositor| {
-                    let picker = ui::Picker::new(commands, (), |cx, command, _action| {
+                    let picker = ui::Picker::new(commands, (), None, |cx, command, _action| {
                         execute_lsp_command(cx.editor, command.clone());
                     });
                     compositor.push(Box::new(overlaid(picker)))
@@ -2229,6 +2277,13 @@ pub const TYPABLE_COMMAND_LIST: &[TypableCommand] = &[
             fun: force_buffer_close_all,
             signature: CommandSignature::none(),
         },
+        TypableCommand {
+            name: "delete",
+            aliases: &["remove", "rm", "del"],
+            doc: "Deletes the file associated with the current buffer",
+            fun: delete,
+            signature: CommandSignature::none(),
+        },
         TypableCommand {
             name: "buffer-next",
             aliases: &["bn", "bnext"],
@@ -2374,6 +2429,13 @@ pub const TYPABLE_COMMAND_LIST: &[TypableCommand] = &[
             fun: theme,
             signature: CommandSignature::positional(&[completers::theme]),
         },
+        TypableCommand {
+            name: "icons",
+            aliases: &[],
+            doc: "Change the editor icon flavor (show current flavor if no name specified).",
+            fun: icons,
+            signature: CommandSignature::positional(&[completers::icons]),
+        },
         TypableCommand {
             name: "clipboard-yank",
             aliases: &[],

helix-term/src/compositor.rs

@@ -34,6 +34,48 @@ impl<'a> Context<'a> {
         tokio::task::block_in_place(|| helix_lsp::block_on(self.editor.flush_writes()))?;
         Ok(())
     }
+
+    /// Purpose: to test `handle_event` without escalating the test case to integration test
+    /// Usage:
+    /// ```
+    /// let mut editor = Context::dummy_editor();
+    /// let mut jobs = Context::dummy_jobs();
+    /// let mut cx = Context::dummy(&mut jobs, &mut editor);
+    /// ```
+    #[cfg(test)]
+    pub fn dummy(jobs: &'a mut Jobs, editor: &'a mut helix_view::Editor) -> Context<'a> {
+        Context {
+            jobs,
+            scroll: None,
+            editor,
+        }
+    }
+
+    #[cfg(test)]
+    pub fn dummy_jobs() -> Jobs {
+        Jobs::new()
+    }
+
+    #[cfg(test)]
+    pub fn dummy_editor() -> Editor {
+        use crate::config::Config;
+        use arc_swap::{access::Map, ArcSwap};
+        use helix_core::syntax::{self, Configuration};
+        use helix_view::{icons, theme};
+        use std::sync::Arc;
+
+        let config = Arc::new(ArcSwap::from_pointee(Config::default()));
+        Editor::new(
+            Rect::new(0, 0, 60, 120),
+            Arc::new(theme::Loader::new(&[])),
+            Arc::new(icons::Loader::new(&[])),
+            Arc::new(syntax::Loader::new(Configuration { language: vec![] })),
+            Arc::new(Arc::new(Map::new(
+                Arc::clone(&config),
+                |config: &Config| &config.editor,
+            ))),
+        )
+    }
 }
 
 pub trait Component: Any + AnyComponent {
@@ -72,6 +114,21 @@ pub trait Component: Any + AnyComponent {
     fn id(&self) -> Option<&'static str> {
         None
     }
+
+    #[cfg(test)]
+    /// Utility method for testing `handle_event` without using integration test.
+    /// Especially useful for testing helper components such as `Prompt`, `TreeView` etc
+    fn handle_events(&mut self, events: &str) -> anyhow::Result<()> {
+        use helix_view::input::parse_macro;
+
+        let mut editor = Context::dummy_editor();
+        let mut jobs = Context::dummy_jobs();
+        let mut cx = Context::dummy(&mut jobs, &mut editor);
+        for event in parse_macro(events)? {
+            self.handle_event(&Event::Key(event), &mut cx);
+        }
+        Ok(())
+    }
 }
 
 pub struct Compositor {

helix-term/src/config.rs

@@ -12,6 +12,7 @@ use toml::de::Error as TomlError;
 #[derive(Debug, Clone, PartialEq)]
 pub struct Config {
     pub theme: Option<String>,
+    pub icons: Option<String>,
     pub keys: HashMap<Mode, Keymap>,
     pub editor: helix_view::editor::Config,
 }
@@ -20,6 +21,7 @@ pub struct Config {
 #[serde(deny_unknown_fields)]
 pub struct ConfigRaw {
     pub theme: Option<String>,
+    pub icons: Option<String>,
     pub keys: Option<HashMap<Mode, Keymap>>,
     pub editor: Option<toml::Value>,
 }
@@ -28,6 +30,7 @@ impl Default for Config {
     fn default() -> Config {
         Config {
             theme: None,
+            icons: None,
             keys: keymap::default(),
             editor: helix_view::editor::Config::default(),
         }
@@ -86,6 +89,7 @@ impl Config {
 
                 Config {
                     theme: local.theme.or(global.theme),
+                    icons: local.icons.or(global.icons),
                     keys,
                     editor,
                 }
@@ -102,6 +106,7 @@ impl Config {
                 }
                 Config {
                     theme: config.theme,
+                    icons: config.icons,
                     keys,
                     editor: config.editor.map_or_else(
                         || Ok(helix_view::editor::Config::default()),

helix-term/src/keymap/default.rs

@@ -274,6 +274,7 @@ pub fn default() -> HashMap<Mode, Keymap> {
             "r" => rename_symbol,
             "h" => select_references_to_symbol_under_cursor,
             "?" => command_palette,
+            "e" => reveal_current_file,
         },
         "z" => { "View"
             "z" | "c" => align_view_center,

helix-term/src/ui/completion.rs

@@ -2,6 +2,7 @@ use crate::compositor::{Component, Context, Event, EventResult};
 use helix_view::{
     document::SavePoint,
     editor::CompleteAction,
+    icons::Icons,
     theme::{Modifier, Style},
     ViewId,
 };
@@ -33,7 +34,8 @@ impl menu::Item for CompletionItem {
             .into()
     }
 
-    fn format(&self, _data: &Self::Data) -> menu::Row {
+    // Before implementing icons for the `CompletionItemKind`s, something must be done to `Menu::required_size` and `Menu::recalculate_size` in order to have correct sizes even with icons.
+    fn format<'a>(&self, _data: &Self::Data, _icons: Option<&'a Icons>) -> menu::Row {
         let deprecated = self.deprecated.unwrap_or_default()
             || self.tags.as_ref().map_or(false, |tags| {
                 tags.contains(&lsp::CompletionItemTag::DEPRECATED)

helix-term/src/ui/editor.rs

@@ -6,7 +6,7 @@ use crate::{
     keymap::{KeymapResult, Keymaps},
     ui::{
         document::{render_document, LinePos, TextRenderer, TranslatedPosition},
-        Completion, ProgressSpinners,
+        Completion, Explorer, ProgressSpinners,
     },
 };
 
@@ -23,7 +23,7 @@ use helix_core::{
 };
 use helix_view::{
     document::{Mode, SavePoint, SCRATCH_BUFFER_NAME},
-    editor::{CompleteAction, CursorShapeConfig},
+    editor::{CompleteAction, CursorShapeConfig, ExplorerPosition},
     graphics::{Color, CursorKind, Modifier, Rect, Style},
     input::{KeyEvent, MouseButton, MouseEvent, MouseEventKind},
     keyboard::{KeyCode, KeyModifiers},
@@ -43,6 +43,7 @@ pub struct EditorView {
     pub(crate) last_insert: (commands::MappableCommand, Vec<InsertEvent>),
     pub(crate) completion: Option<Completion>,
     spinners: ProgressSpinners,
+    pub(crate) explorer: Option<Explorer>,
 }
 
 #[derive(Debug, Clone)]
@@ -68,6 +69,7 @@ impl EditorView {
             last_insert: (commands::MappableCommand::normal_mode, Vec::new()),
             completion: None,
             spinners: ProgressSpinners::default(),
+            explorer: None,
         }
     }
 
@@ -531,8 +533,24 @@ impl EditorView {
 
         let mut x = viewport.x;
         let current_doc = view!(editor).doc;
+        let config = editor.config();
+        let icons_enabled = config.icons.bufferline;
 
         for doc in editor.documents() {
+            let filetype_icon = doc
+                .language_config()
+                .and_then(|config| {
+                    config
+                        .file_types
+                        .iter()
+                        .map(|filetype| match filetype {
+                            helix_core::syntax::FileType::Extension(s) => s,
+                            helix_core::syntax::FileType::Suffix(s) => s,
+                        })
+                        .find_map(|filetype| editor.icons.icon_from_filetype(filetype))
+                })
+                .or_else(|| editor.icons.icon_from_path(doc.path()));
+
             let fname = doc
                 .path()
                 .unwrap_or(&scratch)
@@ -551,6 +569,22 @@ impl EditorView {
             let used_width = viewport.x.saturating_sub(x);
             let rem_width = surface.area.width.saturating_sub(used_width);
 
+            if icons_enabled {
+                if let Some(icon) = filetype_icon {
+                    x = surface
+                        .set_stringn(
+                            x,
+                            viewport.y,
+                            format!(" {}", icon.icon_char),
+                            rem_width as usize,
+                            match icon.style {
+                                Some(s) => style.patch(s.into()),
+                                None => style,
+                            },
+                        )
+                        .0;
+                }
+            }
             x = surface
                 .set_stringn(x, viewport.y, text, rem_width as usize, style)
                 .0;
@@ -1205,6 +1239,11 @@ impl Component for EditorView {
         event: &Event,
         context: &mut crate::compositor::Context,
     ) -> EventResult {
+        if let Some(explore) = self.explorer.as_mut() {
+            if let EventResult::Consumed(callback) = explore.handle_event(event, context) {
+                return EventResult::Consumed(callback);
+            }
+        }
         let mut cx = commands::Context {
             editor: context.editor,
             count: None,
@@ -1361,6 +1400,8 @@ impl Component for EditorView {
         surface.set_style(area, cx.editor.theme.get("ui.background"));
         let config = cx.editor.config();
 
+        let editor_area = area.clip_bottom(1);
+
         // check if bufferline should be rendered
         use helix_view::editor::BufferLine;
         let use_bufferline = match config.bufferline {
@@ -1369,15 +1410,43 @@ impl Component for EditorView {
             _ => false,
         };
 
-        // -1 for commandline and -1 for bufferline
-        let mut editor_area = area.clip_bottom(1);
-        if use_bufferline {
-            editor_area = editor_area.clip_top(1);
-        }
+        let editor_area = if use_bufferline {
+            editor_area.clip_top(1)
+        } else {
+            editor_area
+        };
+
+        let editor_area = if let Some(explorer) = &self.explorer {
+            let explorer_column_width = if explorer.is_opened() {
+                explorer.column_width().saturating_add(2)
+            } else {
+                0
+            };
+            // For future developer:
+            // We should have a Dock trait that allows a component to dock to the top/left/bottom/right
+            // of another component.
+            match config.explorer.position {
+                ExplorerPosition::Left => editor_area.clip_left(explorer_column_width),
+                ExplorerPosition::Right => editor_area.clip_right(explorer_column_width),
+            }
+        } else {
+            editor_area
+        };
 
         // if the terminal size suddenly changed, we need to trigger a resize
         cx.editor.resize(editor_area);
 
+        if let Some(explorer) = self.explorer.as_mut() {
+            if !explorer.is_focus() {
+                let area = if use_bufferline {
+                    area.clip_top(1)
+                } else {
+                    area
+                };
+                explorer.render(area, surface, cx);
+            }
+        }
+
         if use_bufferline {
             Self::render_bufferline(cx.editor, area.with_height(1), surface);
         }
@@ -1456,9 +1525,47 @@ impl Component for EditorView {
         if let Some(completion) = self.completion.as_mut() {
             completion.render(area, surface, cx);
         }
+
+        if let Some(explore) = self.explorer.as_mut() {
+            let needs_update = explore.is_focus() || {
+                if let Some(current_document_path) = doc!(cx.editor).path().cloned() {
+                    if let Some(current_explore_path) = explore.current_file() {
+                        if *current_explore_path != current_document_path {
+                            let _ = explore.reveal_file(current_document_path);
+
+                            true
+                        } else {
+                            false
+                        }
+                    } else {
+                        let _ = explore.reveal_file(current_document_path);
+                        true
+                    }
+                } else {
+                    false
+                }
+            };
+
+            if needs_update {
+                let area = if use_bufferline {
+                    area.clip_top(1)
+                } else {
+                    area
+                };
+                explore.render(area, surface, cx);
+            }
+        }
     }
 
     fn cursor(&self, _area: Rect, editor: &Editor) -> (Option<Position>, CursorKind) {
+        if let Some(explore) = &self.explorer {
+            if explore.is_focus() {
+                let cursor = explore.cursor(_area, editor);
+                if cursor.0.is_some() {
+                    return cursor;
+                }
+            }
+        }
         match editor.cursor() {
             // All block cursors are drawn manually
             (pos, CursorKind::Block) => (pos, CursorKind::Hidden),

helix-term/src/ui/menu.rs

@@ -4,29 +4,29 @@ use crate::{
     compositor::{Callback, Component, Compositor, Context, Event, EventResult},
     ctrl, key, shift,
 };
-use tui::{buffer::Buffer as Surface, widgets::Table};
+use tui::{buffer::Buffer as Surface, text::Span, widgets::Table};
 
 pub use tui::widgets::{Cell, Row};
 
 use fuzzy_matcher::skim::SkimMatcherV2 as Matcher;
 use fuzzy_matcher::FuzzyMatcher;
 
-use helix_view::{graphics::Rect, Editor};
+use helix_view::{graphics::Rect, icons::Icons, Editor};
 use tui::layout::Constraint;
 
 pub trait Item {
     /// Additional editor state that is used for label calculation.
     type Data;
 
-    fn format(&self, data: &Self::Data) -> Row;
+    fn format<'a>(&self, data: &Self::Data, icons: Option<&'a Icons>) -> Row;
 
     fn sort_text(&self, data: &Self::Data) -> Cow<str> {
-        let label: String = self.format(data).cell_text().collect();
+        let label: String = self.format(data, None).cell_text().collect();
         label.into()
     }
 
     fn filter_text(&self, data: &Self::Data) -> Cow<str> {
-        let label: String = self.format(data).cell_text().collect();
+        let label: String = self.format(data, None).cell_text().collect();
         label.into()
     }
 }
@@ -35,11 +35,15 @@ impl Item for PathBuf {
     /// Root prefix to strip.
     type Data = PathBuf;
 
-    fn format(&self, root_path: &Self::Data) -> Row {
-        self.strip_prefix(root_path)
+    fn format<'a>(&self, root_path: &Self::Data, icons: Option<&'a Icons>) -> Row {
+        let path_str = self
+            .strip_prefix(root_path)
             .unwrap_or(self)
-            .to_string_lossy()
-            .into()
+            .to_string_lossy();
+        match icons.and_then(|icons| icons.icon_from_path(Some(self))) {
+            Some(icon) => Row::new([icon.into(), Span::raw(path_str)]),
+            None => path_str.into(),
+        }
     }
 }
 
@@ -142,10 +146,10 @@ impl<T: Item> Menu<T> {
         let n = self
             .options
             .first()
-            .map(|option| option.format(&self.editor_data).cells.len())
+            .map(|option| option.format(&self.editor_data, None).cells.len())
             .unwrap_or_default();
         let max_lens = self.options.iter().fold(vec![0; n], |mut acc, option| {
-            let row = option.format(&self.editor_data);
+            let row = option.format(&self.editor_data, None);
             // maintain max for each column
             for (acc, cell) in acc.iter_mut().zip(row.cells.iter()) {
                 let width = cell.content.width();
@@ -331,7 +335,7 @@ impl<T: Item + 'static> Component for Menu<T> {
 
         let rows = options
             .iter()
-            .map(|option| option.format(&self.editor_data));
+            .map(|option| option.format(&self.editor_data, None));
         let table = Table::new(rows)
             .style(style)
             .highlight_style(selected)

helix-term/src/ui/mod.rs

@@ -1,6 +1,7 @@
 mod completion;
 mod document;
 pub(crate) mod editor;
+mod explorer;
 mod fuzzy_match;
 mod info;
 pub mod lsp;
@@ -13,12 +14,14 @@ mod prompt;
 mod spinner;
 mod statusline;
 mod text;
+mod tree;
 
 use crate::compositor::{Component, Compositor};
 use crate::filter_picker_entry;
 use crate::job::{self, Callback};
 pub use completion::Completion;
 pub use editor::EditorView;
+use helix_view::icons::Icons;
 pub use markdown::Markdown;
 pub use menu::Menu;
 pub use picker::{DynamicPicker, FileLocation, FilePicker, Picker};
@@ -26,7 +29,9 @@ pub use popup::Popup;
 pub use prompt::{Prompt, PromptEvent};
 pub use spinner::{ProgressSpinners, Spinner};
 pub use text::Text;
+pub use tree::{TreeOp, TreeView, TreeViewItem};
 
+pub use explorer::Explorer;
 use helix_core::regex::Regex;
 use helix_core::regex::RegexBuilder;
 use helix_view::Editor;
@@ -158,7 +163,11 @@ pub fn regex_prompt(
     cx.push_layer(Box::new(prompt));
 }
 
-pub fn file_picker(root: PathBuf, config: &helix_view::editor::Config) -> FilePicker<PathBuf> {
+pub fn file_picker(
+    root: PathBuf,
+    config: &helix_view::editor::Config,
+    icons: &Icons,
+) -> FilePicker<PathBuf> {
     use ignore::{types::TypesBuilder, WalkBuilder};
     use std::time::Instant;
 
@@ -220,6 +229,7 @@ pub fn file_picker(root: PathBuf, config: &helix_view::editor::Config) -> FilePi
     FilePicker::new(
         files,
         root,
+        config.icons.picker.then_some(icons),
         move |cx, path: &PathBuf, action| {
             if let Err(e) = cx.editor.open(path, action) {
                 let err = if let Some(err) = e.source() {
@@ -239,7 +249,7 @@ pub mod completers {
     use fuzzy_matcher::skim::SkimMatcherV2 as Matcher;
     use fuzzy_matcher::FuzzyMatcher;
     use helix_view::document::SCRATCH_BUFFER_NAME;
-    use helix_view::theme;
+
     use helix_view::{editor::Config, Editor};
     use once_cell::sync::Lazy;
     use std::borrow::Cow;
@@ -280,9 +290,9 @@ pub mod completers {
     }
 
     pub fn theme(_editor: &Editor, input: &str) -> Vec<Completion> {
-        let mut names = theme::Loader::read_names(&helix_loader::config_dir().join("themes"));
+        let mut names = helix_loader::read_toml_names(&helix_loader::config_dir().join("themes"));
         for rt_dir in helix_loader::runtime_dirs() {
-            names.extend(theme::Loader::read_names(&rt_dir.join("themes")));
+            names.extend(helix_loader::read_toml_names(&rt_dir.join("themes")));
         }
         names.push("default".into());
         names.push("base16_default".into());
@@ -311,6 +321,37 @@ pub mod completers {
         names
     }
 
+    pub fn icons(_editor: &Editor, input: &str) -> Vec<Completion> {
+        let mut names = helix_loader::read_toml_names(&helix_loader::config_dir().join("icons"));
+        for rt_dir in helix_loader::runtime_dirs() {
+            names.extend(helix_loader::read_toml_names(&rt_dir.join("icons")));
+        }
+        names.push("default".into());
+        names.sort();
+        names.dedup();
+
+        let mut names: Vec<_> = names
+            .into_iter()
+            .map(|name| ((0..), Cow::from(name)))
+            .collect();
+
+        let matcher = Matcher::default();
+
+        let mut matches: Vec<_> = names
+            .into_iter()
+            .filter_map(|(_range, name)| {
+                matcher.fuzzy_match(&name, input).map(|score| (name, score))
+            })
+            .collect();
+
+        matches.sort_unstable_by(|(name1, score1), (name2, score2)| {
+            (Reverse(*score1), name1).cmp(&(Reverse(*score2), name2))
+        });
+        names = matches.into_iter().map(|(name, _)| ((0..), name)).collect();
+
+        names
+    }
+
     /// Recursive function to get all keys from this value and add them to vec
     fn get_keys(value: &serde_json::Value, vec: &mut Vec<String>, scope: Option<&str>) {
         if let Some(map) = value.as_object() {

helix-term/src/ui/overlay.rs

@@ -19,26 +19,7 @@ pub struct Overlay<T> {
 pub fn overlaid<T>(content: T) -> Overlay<T> {
     Overlay {
         content,
-        calc_child_size: Box::new(|rect: Rect| clip_rect_relative(rect.clip_bottom(2), 90, 90)),
-    }
-}
-
-fn clip_rect_relative(rect: Rect, percent_horizontal: u8, percent_vertical: u8) -> Rect {
-    fn mul_and_cast(size: u16, factor: u8) -> u16 {
-        ((size as u32) * (factor as u32) / 100).try_into().unwrap()
-    }
-
-    let inner_w = mul_and_cast(rect.width, percent_horizontal);
-    let inner_h = mul_and_cast(rect.height, percent_vertical);
-
-    let offset_x = rect.width.saturating_sub(inner_w) / 2;
-    let offset_y = rect.height.saturating_sub(inner_h) / 2;
-
-    Rect {
-        x: rect.x + offset_x,
-        y: rect.y + offset_y,
-        width: inner_w,
-        height: inner_h,
+        calc_child_size: Box::new(|rect: Rect| rect.overlayed()),
     }
 }
 

helix-term/src/ui/picker.rs

@@ -31,6 +31,7 @@ use helix_core::{
 use helix_view::{
     editor::Action,
     graphics::{CursorKind, Margin, Modifier, Rect},
+    icons::Icons,
     theme::Style,
     view::ViewPosition,
     Document, DocumentId, Editor,
@@ -126,11 +127,12 @@ impl<T: Item> FilePicker<T> {
     pub fn new(
         options: Vec<T>,
         editor_data: T::Data,
+        icons: Option<&'_ Icons>,
         callback_fn: impl Fn(&mut Context, &T, Action) + 'static,
         preview_fn: impl Fn(&Editor, &T) -> Option<FileLocation> + 'static,
     ) -> Self {
         let truncate_start = true;
-        let mut picker = Picker::new(options, editor_data, callback_fn);
+        let mut picker = Picker::new(options, editor_data, icons, callback_fn);
         picker.truncate_start = truncate_start;
 
         Self {
@@ -424,12 +426,14 @@ pub struct Picker<T: Item> {
     widths: Vec<Constraint>,
 
     callback_fn: PickerCallback<T>,
+    has_icons: bool,
 }
 
 impl<T: Item> Picker<T> {
     pub fn new(
         options: Vec<T>,
         editor_data: T::Data,
+        icons: Option<&'_ Icons>,
         callback_fn: impl Fn(&mut Context, &T, Action) + 'static,
     ) -> Self {
         let prompt = Prompt::new(
@@ -452,9 +456,10 @@ impl<T: Item> Picker<T> {
             callback_fn: Box::new(callback_fn),
             completion_height: 0,
             widths: Vec::new(),
+            has_icons: icons.is_some(),
         };
 
-        picker.calculate_column_widths();
+        picker.calculate_column_widths(icons);
 
         // scoring on empty input
         // TODO: just reuse score()
@@ -472,23 +477,23 @@ impl<T: Item> Picker<T> {
         picker
     }
 
-    pub fn set_options(&mut self, new_options: Vec<T>) {
+    pub fn set_options(&mut self, new_options: Vec<T>, icons: &'_ Icons) {
         self.options = new_options;
         self.cursor = 0;
         self.force_score();
-        self.calculate_column_widths();
+        self.calculate_column_widths(self.has_icons.then_some(icons));
     }
 
     /// Calculate the width constraints using the maximum widths of each column
     /// for the current options.
-    fn calculate_column_widths(&mut self) {
+    fn calculate_column_widths(&mut self, icons: Option<&'_ Icons>) {
         let n = self
             .options
             .first()
-            .map(|option| option.format(&self.editor_data).cells.len())
+            .map(|option| option.format(&self.editor_data, icons).cells.len())
             .unwrap_or_default();
         let max_lens = self.options.iter().fold(vec![0; n], |mut acc, option| {
-            let row = option.format(&self.editor_data);
+            let row = option.format(&self.editor_data, icons);
             // maintain max for each column
             for (acc, cell) in acc.iter_mut().zip(row.cells.iter()) {
                 let width = cell.content.width();
@@ -779,7 +784,12 @@ impl<T: Item + 'static> Component for Picker<T> {
             .skip(offset)
             .take(rows as usize)
             .map(|pmatch| &self.options[pmatch.index])
-            .map(|option| option.format(&self.editor_data))
+            .map(|option| {
+                option.format(
+                    &self.editor_data,
+                    cx.editor.config().icons.picker.then_some(&cx.editor.icons),
+                )
+            })
             .map(|mut row| {
                 const TEMP_CELL_SEP: &str = " ";
 
@@ -953,7 +963,7 @@ impl<T: Item + Send + 'static> Component for DynamicPicker<T> {
                         Some(overlay) => &mut overlay.content.file_picker.picker,
                         None => return,
                     };
-                    picker.set_options(new_options);
+                    picker.set_options(new_options, &editor.icons);
                     editor.reset_idle_timer();
                 }));
             anyhow::Ok(callback)

helix-term/src/ui/prompt.rs

@@ -94,6 +94,10 @@ impl Prompt {
         self
     }
 
+    pub fn prompt(&self) -> &str {
+        self.prompt.as_ref()
+    }
+
     pub fn line(&self) -> &String {
         &self.line
     }

helix-term/src/ui/statusline.rs

@@ -4,6 +4,7 @@ use helix_view::document::DEFAULT_LANGUAGE_NAME;
 use helix_view::{
     document::{Mode, SCRATCH_BUFFER_NAME},
     graphics::Rect,
+    icons::Icon,
     theme::Style,
     Document, Editor, View,
 };
@@ -21,6 +22,7 @@ pub struct RenderContext<'a> {
     pub focused: bool,
     pub spinners: &'a ProgressSpinners,
     pub parts: RenderBuffer<'a>,
+    pub icons: RenderContextIcons<'a>,
 }
 
 impl<'a> RenderContext<'a> {
@@ -31,6 +33,25 @@ impl<'a> RenderContext<'a> {
         focused: bool,
         spinners: &'a ProgressSpinners,
     ) -> Self {
+        // Determine icon based on language name if possible
+        let mut filetype_icon = None;
+        if let Some(language_config) = doc.language_config() {
+            for filetype in &language_config.file_types {
+                let filetype_str = match filetype {
+                    helix_core::syntax::FileType::Extension(s) => s,
+                    helix_core::syntax::FileType::Suffix(s) => s,
+                };
+                filetype_icon = editor.icons.icon_from_filetype(filetype_str);
+                if filetype_icon.is_some() {
+                    break;
+                }
+            }
+        }
+        // Otherwise based on filetype
+        if filetype_icon.is_none() {
+            filetype_icon = editor.icons.icon_from_path(doc.path())
+        }
+
         RenderContext {
             editor,
             doc,
@@ -38,10 +59,21 @@ impl<'a> RenderContext<'a> {
             focused,
             spinners,
             parts: RenderBuffer::default(),
+            icons: RenderContextIcons {
+                enabled: editor.config().icons.statusline,
+                filetype_icon,
+                vcs_icon: editor.icons.ui.as_ref().and_then(|ui| ui.get("vcs_branch")),
+            },
         }
     }
 }
 
+pub struct RenderContextIcons<'a> {
+    pub enabled: bool,
+    pub filetype_icon: Option<&'a Icon>,
+    pub vcs_icon: Option<&'a Icon>,
+}
+
 #[derive(Default)]
 pub struct RenderBuffer<'a> {
     pub left: Spans<'a>,
@@ -148,6 +180,7 @@ where
         helix_view::editor::StatusLineElement::FileEncoding => render_file_encoding,
         helix_view::editor::StatusLineElement::FileLineEnding => render_file_line_ending,
         helix_view::editor::StatusLineElement::FileType => render_file_type,
+        helix_view::editor::StatusLineElement::FileTypeIcon => render_file_type_icon,
         helix_view::editor::StatusLineElement::Diagnostics => render_diagnostics,
         helix_view::editor::StatusLineElement::WorkspaceDiagnostics => render_workspace_diagnostics,
         helix_view::editor::StatusLineElement::Selections => render_selections,
@@ -240,7 +273,13 @@ where
     if warnings > 0 {
         write(
             context,
-            "●".to_string(),
+            context
+                .editor
+                .icons
+                .diagnostic
+                .warning
+                .icon_char
+                .to_string(),
             Some(context.editor.theme.get("warning")),
         );
         write(context, format!(" {} ", warnings), None);
@@ -249,7 +288,7 @@ where
     if errors > 0 {
         write(
             context,
-            "●".to_string(),
+            context.editor.icons.diagnostic.error.icon_char.to_string(),
             Some(context.editor.theme.get("error")),
         );
         write(context, format!(" {} ", errors), None);
@@ -282,7 +321,13 @@ where
     if warnings > 0 {
         write(
             context,
-            "●".to_string(),
+            context
+                .editor
+                .icons
+                .diagnostic
+                .warning
+                .icon_char
+                .to_string(),
             Some(context.editor.theme.get("warning")),
         );
         write(context, format!(" {} ", warnings), None);
@@ -291,7 +336,7 @@ where
     if errors > 0 {
         write(
             context,
-            "●".to_string(),
+            context.editor.icons.diagnostic.error.icon_char.to_string(),
             Some(context.editor.theme.get("error")),
         );
         write(context, format!(" {} ", errors), None);
@@ -412,6 +457,21 @@ where
     write(context, format!(" {} ", file_type), None);
 }
 
+fn render_file_type_icon<F>(context: &mut RenderContext, write: F)
+where
+    F: Fn(&mut RenderContext, String, Option<Style>) + Copy,
+{
+    if context.icons.enabled {
+        if let Some(icon) = context.icons.filetype_icon {
+            write(
+                context,
+                format!("{}", icon.icon_char),
+                icon.style.map(|icons_style| icons_style.into()),
+            )
+        }
+    }
+}
+
 fn render_file_name<F>(context: &mut RenderContext, write: F)
 where
     F: Fn(&mut RenderContext, String, Option<Style>) + Copy,
@@ -482,11 +542,12 @@ fn render_version_control<F>(context: &mut RenderContext, write: F)
 where
     F: Fn(&mut RenderContext, String, Option<Style>) + Copy,
 {
-    let head = context
-        .doc
-        .version_control_head()
-        .unwrap_or_default()
-        .to_string();
+    let head = context.doc.version_control_head().unwrap_or_default();
 
-    write(context, head, None);
+    if !head.is_empty() && context.icons.enabled {
+        if let Some(vcs_icon) = context.icons.vcs_icon {
+            return write(context, format!("{} {head}", vcs_icon.icon_char), None);
+        }
+    }
+    write(context, head.to_string(), None);
 }

helix-tui/src/text.rs

@@ -49,6 +49,7 @@
 use helix_core::line_ending::str_is_line_ending;
 use helix_core::unicode::width::UnicodeWidthStr;
 use helix_view::graphics::Style;
+use helix_view::icons::Icon;
 use std::borrow::Cow;
 use unicode_segmentation::UnicodeSegmentation;
 
@@ -208,6 +209,15 @@ impl<'a> From<Cow<'a, str>> for Span<'a> {
     }
 }
 
+impl<'a, 'b> From<&'b Icon> for Span<'a> {
+    fn from(icon: &'b Icon) -> Self {
+        Span {
+            content: format!("{}", icon.icon_char).into(),
+            style: icon.style.unwrap_or_default().into(),
+        }
+    }
+}
+
 /// A string composed of clusters of graphemes, each with their own style.
 #[derive(Debug, Default, Clone, PartialEq, Eq)]
 pub struct Spans<'a>(pub Vec<Span<'a>>);

helix-view/src/document.rs

@@ -544,6 +544,21 @@ impl Document {
         }
     }
 
+    /// Deletes the file associated with this document
+    pub fn delete(&mut self) -> impl Future<Output = Result<(), anyhow::Error>> {
+        let path = self
+            .path()
+            .expect("Cannot delete with no path set!")
+            .clone();
+
+        async move {
+            use tokio::fs;
+            fs::remove_file(path).await?;
+
+            Ok(())
+        }
+    }
+
     /// If supported, returns the changes that should be applied to this document in order
     /// to format it nicely.
     // We can't use anyhow::Result here since the output of the future has to be

helix-view/src/editor.rs

@@ -3,6 +3,7 @@ use crate::{
     clipboard::{get_clipboard_provider, ClipboardProvider},
     document::{DocumentSavedEventFuture, DocumentSavedEventResult, Mode},
     graphics::{CursorKind, Rect},
+    icons::{self, Icons},
     info::Info,
     input::KeyEvent,
     theme::{self, Theme},
@@ -211,6 +212,51 @@ impl Default for FilePickerConfig {
     }
 }
 
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "kebab-case", default, deny_unknown_fields)]
+pub struct ExplorerConfig {
+    pub position: ExplorerPosition,
+    /// explorer column width
+    pub column_width: usize,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "kebab-case")]
+pub enum ExplorerPosition {
+    Left,
+    Right,
+}
+
+impl Default for ExplorerConfig {
+    fn default() -> Self {
+        Self {
+            position: ExplorerPosition::Left,
+            column_width: 36,
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "kebab-case", default, deny_unknown_fields)]
+pub struct IconsConfig {
+    /// Enables icons in front of buffer names in bufferline. Defaults to `true`
+    pub bufferline: bool,
+    /// Enables icons in front of items in the picker. Defaults to `true`
+    pub picker: bool,
+    /// Enables icons in front of items in the statusline. Defaults to `true`
+    pub statusline: bool,
+}
+
+impl Default for IconsConfig {
+    fn default() -> Self {
+        Self {
+            bufferline: true,
+            picker: true,
+            statusline: true,
+        }
+    }
+}
+
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(rename_all = "kebab-case", default, deny_unknown_fields)]
 pub struct Config {
@@ -281,9 +327,13 @@ pub struct Config {
     pub indent_guides: IndentGuidesConfig,
     /// Whether to color modes with different colors. Defaults to `false`.
     pub color_modes: bool,
+    /// explore config
+    pub explorer: ExplorerConfig,
     pub soft_wrap: SoftWrap,
     /// Workspace specific lsp ceiling dirs
     pub workspace_lsp_roots: Vec<PathBuf>,
+    /// Icons configuration
+    pub icons: IconsConfig,
 }
 
 #[derive(Debug, Default, Clone, PartialEq, Eq, Serialize, Deserialize)]
@@ -452,6 +502,9 @@ pub enum StatusLineElement {
     /// The file type (language ID or "text")
     FileType,
 
+    /// The file type icon (from file path)
+    FileTypeIcon,
+
     /// A summary of the number of errors and warnings
     Diagnostics,
 
@@ -749,10 +802,12 @@ impl Default for Config {
             bufferline: BufferLine::default(),
             indent_guides: IndentGuidesConfig::default(),
             color_modes: false,
+            explorer: ExplorerConfig::default(),
             soft_wrap: SoftWrap::default(),
             text_width: 80,
             completion_replace: false,
             workspace_lsp_roots: Vec::new(),
+            icons: IconsConfig::default(),
         }
     }
 }
@@ -829,6 +884,8 @@ pub struct Editor {
     /// The currently applied editor theme. While previewing a theme, the previewed theme
     /// is set here.
     pub theme: Theme,
+    pub icons: Icons,
+    pub icons_loader: Arc<icons::Loader>,
 
     /// The primary Selection prior to starting a goto_line_number preview. This is
     /// restored when the preview is aborted, or added to the jumplist when it is
@@ -851,7 +908,7 @@ pub struct Editor {
     pub config_events: (UnboundedSender<ConfigEvent>, UnboundedReceiver<ConfigEvent>),
     /// Allows asynchronous tasks to control the rendering
     /// The `Notify` allows asynchronous tasks to request the editor to perform a redraw
-    /// The `RwLock` blocks the editor from performing the render until an exclusive lock can be acquired
+    /// The `RwLock` blocks the editor from performing the render until an exclusive lock can be aquired
     pub redraw_handle: RedrawHandle,
     pub needs_redraw: bool,
     /// Cached position of the cursor calculated during rendering.
@@ -923,15 +980,30 @@ pub enum CloseError {
     SaveError(anyhow::Error),
 }
 
+impl From<CloseError> for anyhow::Error {
+    fn from(error: CloseError) -> Self {
+        match error {
+            CloseError::DoesNotExist => anyhow::anyhow!("Document doesn't exist"),
+            CloseError::BufferModified(error) => {
+                anyhow::anyhow!(format!("Buffer modified: '{error}'"))
+            }
+            CloseError::SaveError(error) => anyhow::anyhow!(format!("Save error: {error}")),
+        }
+    }
+}
+
 impl Editor {
     pub fn new(
         mut area: Rect,
         theme_loader: Arc<theme::Loader>,
+        icons_loader: Arc<icons::Loader>,
         syn_loader: Arc<syntax::Loader>,
         config: Arc<dyn DynAccess<Config>>,
     ) -> Self {
         let conf = config.load();
         let auto_pairs = (&conf.auto_pairs).into();
+        let theme = theme_loader.default();
+        let icons = icons_loader.default(&theme);
 
         // HAXX: offset the render area height by 1 to account for prompt/commandline
         area.height -= 1;
@@ -974,6 +1046,8 @@ impl Editor {
             needs_redraw: false,
             cursor_cache: Cell::new(None),
             completion_request_handle: None,
+            icons,
+            icons_loader,
         }
     }
 
@@ -1074,6 +1148,9 @@ impl Editor {
             }
             ThemeAction::Set => {
                 self.last_theme = None;
+                // Reload the icons to apply default colors based on theme
+                self.icons.set_diagnostic_icons_base_style(&theme);
+                self.icons.set_symbolkind_icons_base_style(&theme);
                 self.theme = theme;
             }
         }
@@ -1081,6 +1158,11 @@ impl Editor {
         self._refresh();
     }
 
+    pub fn set_icons(&mut self, icons: Icons) {
+        self.icons = icons;
+        self._refresh();
+    }
+
     /// Refreshes the language server for a given document
     pub fn refresh_language_server(&mut self, doc_id: DocumentId) -> Option<()> {
         self.launch_language_server(doc_id)

helix-view/src/graphics.rs

@@ -248,6 +248,34 @@ impl Rect {
             && self.y < other.y + other.height
             && self.y + self.height > other.y
     }
+
+    /// Returns a smaller `Rect` with a margin of 5% on each side, and an additional 2 rows at the bottom
+    pub fn overlayed(self) -> Rect {
+        self.clip_bottom(2).clip_relative(90, 90)
+    }
+
+    /// Returns a smaller `Rect` with width and height clipped to the given `percent_horizontal`
+    /// and `percent_vertical`.
+    ///
+    /// Value of `percent_horizontal` and `percent_vertical` is from 0 to 100.
+    pub fn clip_relative(self, percent_horizontal: u8, percent_vertical: u8) -> Rect {
+        fn mul_and_cast(size: u16, factor: u8) -> u16 {
+            ((size as u32) * (factor as u32) / 100).try_into().unwrap()
+        }
+
+        let inner_w = mul_and_cast(self.width, percent_horizontal);
+        let inner_h = mul_and_cast(self.height, percent_vertical);
+
+        let offset_x = self.width.saturating_sub(inner_w) / 2;
+        let offset_y = self.height.saturating_sub(inner_h) / 2;
+
+        Rect {
+            x: self.x + offset_x,
+            y: self.y + offset_y,
+            width: inner_w,
+            height: inner_h,
+        }
+    }
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]

helix-view/src/gutter.rs

@@ -45,7 +45,7 @@ impl GutterType {
 }
 
 pub fn diagnostic<'doc>(
-    _editor: &'doc Editor,
+    editor: &'doc Editor,
     doc: &'doc Document,
     _view: &View,
     theme: &Theme,
@@ -76,7 +76,13 @@ pub fn diagnostic<'doc>(
                 // This unwrap is safe because the iterator cannot be empty as it contains at least the item found by the binary search.
                 let diagnostic = diagnostics_on_line.max_by_key(|d| d.severity).unwrap();
 
-                write!(out, "●").unwrap();
+                let diagnostic_icon = match diagnostic.severity {
+                    Some(Severity::Error) => &editor.icons.diagnostic.error,
+                    Some(Severity::Warning) | None => &editor.icons.diagnostic.warning,
+                    Some(Severity::Info) => &editor.icons.diagnostic.info,
+                    Some(Severity::Hint) => &editor.icons.diagnostic.hint,
+                };
+                write!(out, "{}", diagnostic_icon.icon_char).unwrap();
                 return Some(match diagnostic.severity {
                     Some(Severity::Error) => error,
                     Some(Severity::Warning) | None => warning,
@@ -90,19 +96,20 @@ pub fn diagnostic<'doc>(
 }
 
 pub fn diff<'doc>(
-    _editor: &'doc Editor,
+    editor: &'doc Editor,
     doc: &'doc Document,
     _view: &View,
     theme: &Theme,
     _is_focused: bool,
 ) -> GutterFn<'doc> {
-    let added = theme.get("diff.plus");
-    let deleted = theme.get("diff.minus");
-    let modified = theme.get("diff.delta");
     if let Some(diff_handle) = doc.diff_handle() {
+        let added = theme.get("diff.plus");
+        let deleted = theme.get("diff.minus");
+        let modified = theme.get("diff.delta");
         let hunks = diff_handle.load();
         let mut hunk_i = 0;
         let mut hunk = hunks.nth_hunk(hunk_i);
+        let icons = &editor.icons;
         Box::new(
             move |line: usize, _selected: bool, first_visual_line: bool, out: &mut String| {
                 // truncating the line is fine here because we don't compute diffs
@@ -122,18 +129,18 @@ pub fn diff<'doc>(
                 }
 
                 let (icon, style) = if hunk.is_pure_insertion() {
-                    ("▍", added)
+                    (&icons.diff.added, added)
                 } else if hunk.is_pure_removal() {
                     if !first_visual_line {
                         return None;
                     }
-                    ("▔", deleted)
+                    (&icons.diff.deleted, deleted)
                 } else {
-                    ("▍", modified)
+                    (&icons.diff.modified, modified)
                 };
 
-                write!(out, "{}", icon).unwrap();
-                Some(style)
+                write!(out, "{}", icon.icon_char).unwrap();
+                icon.style.map(|i| i.into()).or(Some(style))
             },
         )
     } else {
@@ -275,7 +282,11 @@ pub fn breakpoints<'doc>(
                 breakpoint_style
             };
 
-            let sym = if breakpoint.verified { "●" } else { "◯" };
+            let sym = if breakpoint.verified {
+                editor.icons.breakpoint.verified.icon_char
+            } else {
+                editor.icons.breakpoint.unverified.icon_char
+            };
             write!(out, "{}", sym).unwrap();
             Some(style)
         },
@@ -310,7 +321,7 @@ fn execution_pause_indicator<'doc>(
                 return None;
             }
 
-            let sym = "▶";
+            let sym = editor.icons.breakpoint.pause_indicator.icon_char;
             write!(out, "{}", sym).unwrap();
             Some(style)
         },

helix-view/src/icons.rs

@@ -0,0 +1,304 @@
+use helix_loader::merge_toml_values;
+use log::warn;
+use once_cell::sync::Lazy;
+use serde::Deserialize;
+use std::collections::{HashMap, HashSet};
+use std::{path::PathBuf, str};
+use toml::Value;
+
+use crate::graphics::{Color, Style};
+use crate::Theme;
+
+pub static BLANK_ICON: Icon = Icon {
+    icon_char: ' ',
+    style: None,
+};
+
+/// The style of an icon can either be defined by the TOML file, or by the theme.
+/// We need to remember that in order to reload the icons colors when the theme changes.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum IconStyle {
+    Custom(Style),
+    Default(Style),
+}
+
+impl Default for IconStyle {
+    fn default() -> Self {
+        IconStyle::Default(Style::default())
+    }
+}
+
+impl From<IconStyle> for Style {
+    fn from(icon_style: IconStyle) -> Self {
+        match icon_style {
+            IconStyle::Custom(style) => style,
+            IconStyle::Default(style) => style,
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize)]
+#[serde(rename_all = "kebab-case", deny_unknown_fields)]
+pub struct Icon {
+    #[serde(rename = "icon")]
+    pub icon_char: char,
+    #[serde(default)]
+    #[serde(deserialize_with = "icon_color_to_style", rename = "color")]
+    pub style: Option<IconStyle>,
+}
+
+impl Icon {
+    /// Loads a given style if the icon style is undefined or based on a default value
+    pub fn with_default_style(&mut self, style: Style) {
+        if self.style.is_none() || matches!(self.style, Some(IconStyle::Default(_))) {
+            self.style = Some(IconStyle::Default(style));
+        }
+    }
+
+    pub fn unstyled(icon_char: char) -> Self {
+        Self {
+            icon_char,
+            style: None,
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize)]
+#[serde(rename_all = "kebab-case", deny_unknown_fields)]
+pub struct Icons {
+    pub name: String,
+    pub mime_type: Option<HashMap<String, Icon>>,
+    pub diagnostic: Diagnostic,
+    pub symbol_kind: Option<HashMap<String, Icon>>,
+    pub breakpoint: Breakpoint,
+    pub diff: Diff,
+    pub ui: Option<HashMap<String, Icon>>,
+}
+
+impl Icons {
+    pub fn name(&self) -> &str {
+        &self.name
+    }
+
+    /// Set theme defined styles to diagnostic icons
+    pub fn set_diagnostic_icons_base_style(&mut self, theme: &Theme) {
+        self.diagnostic.error.with_default_style(theme.get("error"));
+        self.diagnostic.info.with_default_style(theme.get("info"));
+        self.diagnostic.hint.with_default_style(theme.get("hint"));
+        self.diagnostic
+            .warning
+            .with_default_style(theme.get("warning"));
+    }
+
+    /// Set theme defined styles to symbol-kind icons
+    pub fn set_symbolkind_icons_base_style(&mut self, theme: &Theme) {
+        let style = theme
+            .try_get("symbolkind")
+            .unwrap_or_else(|| theme.get("keyword"));
+        if let Some(symbol_kind_icons) = &mut self.symbol_kind {
+            for (_, icon) in symbol_kind_icons.iter_mut() {
+                icon.with_default_style(style);
+            }
+        }
+    }
+
+    /// Set the default style for all icons
+    pub fn reset_styles(&mut self) {
+        if let Some(mime_type_icons) = &mut self.mime_type {
+            for (_, icon) in mime_type_icons.iter_mut() {
+                icon.style = Some(IconStyle::Default(Style::default()));
+            }
+        }
+        if let Some(symbol_kind_icons) = &mut self.symbol_kind {
+            for (_, icon) in symbol_kind_icons.iter_mut() {
+                icon.style = Some(IconStyle::Default(Style::default()));
+            }
+        }
+        if let Some(ui_icons) = &mut self.ui {
+            for (_, icon) in ui_icons.iter_mut() {
+                icon.style = Some(IconStyle::Default(Style::default()));
+            }
+        }
+        self.diagnostic.error.style = Some(IconStyle::Default(Style::default()));
+        self.diagnostic.warning.style = Some(IconStyle::Default(Style::default()));
+        self.diagnostic.hint.style = Some(IconStyle::Default(Style::default()));
+        self.diagnostic.info.style = Some(IconStyle::Default(Style::default()));
+    }
+
+    pub fn icon_from_filetype<'a>(&'a self, filetype: &str) -> Option<&'a Icon> {
+        if let Some(mime_type_icons) = &self.mime_type {
+            mime_type_icons.get(filetype)
+        } else {
+            None
+        }
+    }
+
+    /// Try to return a reference to an appropriate icon for the specified file path, with a default "file" icon if none is found.
+    /// If no such "file" icon is available, return `None`.
+    pub fn icon_from_path<'a>(&'a self, filepath: Option<&PathBuf>) -> Option<&'a Icon> {
+        self.mime_type
+            .as_ref()
+            .and_then(|mime_type_icons| {
+                filepath?
+                    .extension()
+                    .or(filepath?.file_name())
+                    .map(|extension_or_filename| extension_or_filename.to_str())?
+                    .and_then(|extension_or_filename| mime_type_icons.get(extension_or_filename))
+            })
+            .or_else(|| self.ui.as_ref().and_then(|ui_icons| ui_icons.get("file")))
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize)]
+#[serde(rename_all = "kebab-case", deny_unknown_fields)]
+pub struct Diagnostic {
+    pub error: Icon,
+    pub warning: Icon,
+    pub info: Icon,
+    pub hint: Icon,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize)]
+#[serde(rename_all = "kebab-case", deny_unknown_fields)]
+pub struct Breakpoint {
+    pub verified: Icon,
+    pub unverified: Icon,
+    pub pause_indicator: Icon,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize)]
+#[serde(rename_all = "kebab-case", deny_unknown_fields)]
+pub struct Diff {
+    pub added: Icon,
+    pub deleted: Icon,
+    pub modified: Icon,
+}
+
+fn icon_color_to_style<'de, D>(deserializer: D) -> Result<Option<IconStyle>, D::Error>
+where
+    D: serde::Deserializer<'de>,
+{
+    let s: String = Deserialize::deserialize(deserializer)?;
+    let mut style = Style::default();
+    if !s.is_empty() {
+        match hex_string_to_rgb(&s) {
+            Ok(c) => {
+                style = style.fg(c);
+            }
+            Err(e) => {
+                log::error!("{}", e);
+            }
+        };
+        Ok(Some(IconStyle::Custom(style)))
+    } else {
+        Ok(None)
+    }
+}
+
+pub fn hex_string_to_rgb(s: &str) -> Result<Color, String> {
+    if s.starts_with('#') && s.len() >= 7 {
+        if let (Ok(red), Ok(green), Ok(blue)) = (
+            u8::from_str_radix(&s[1..3], 16),
+            u8::from_str_radix(&s[3..5], 16),
+            u8::from_str_radix(&s[5..7], 16),
+        ) {
+            return Ok(Color::Rgb(red, green, blue));
+        }
+    }
+    Err(format!("Icon color: malformed hexcode: {}", s))
+}
+
+pub struct Loader {
+    /// Icons directories to search from highest to lowest priority
+    icons_dirs: Vec<PathBuf>,
+}
+
+pub static DEFAULT_ICONS_DATA: Lazy<Value> = Lazy::new(|| {
+    let bytes = include_bytes!("../../icons.toml");
+    toml::from_str(str::from_utf8(bytes).unwrap()).expect("Failed to parse base 16 default theme")
+});
+
+pub static DEFAULT_ICONS: Lazy<Icons> = Lazy::new(|| Icons {
+    name: "default".into(),
+    ..Icons::from(DEFAULT_ICONS_DATA.clone())
+});
+
+impl Loader {
+    /// Creates a new loader that can load icons flavors from two directories.
+    pub fn new(dirs: &[PathBuf]) -> Self {
+        Self {
+            icons_dirs: dirs.iter().map(|p| p.join("icons")).collect(),
+        }
+    }
+
+    /// Loads icons flavors first looking in the `user_dir` then in `default_dir`.
+    /// The `theme` is needed in order to load default styles for diagnostic icons.
+    pub fn load(
+        &self,
+        name: &str,
+        theme: &Theme,
+        true_color: bool,
+    ) -> Result<Icons, anyhow::Error> {
+        if name == "default" {
+            return Ok(self.default(theme));
+        }
+
+        let mut visited_paths = HashSet::new();
+        let default_icons = HashMap::from([("default", &DEFAULT_ICONS_DATA)]);
+        let mut icons = helix_loader::load_inheritable_toml(
+            name,
+            &self.icons_dirs,
+            &mut visited_paths,
+            &default_icons,
+            Self::merge_icons,
+        )
+        .map(Icons::from)?;
+
+        // Remove all styles when there is no truecolor support.
+        // Not classy, but less cumbersome than trying to pass a parameter to a deserializer.
+        if !true_color {
+            icons.reset_styles();
+        } else {
+            icons.set_diagnostic_icons_base_style(theme);
+            icons.set_symbolkind_icons_base_style(theme);
+        }
+
+        Ok(Icons {
+            name: name.into(),
+            ..icons
+        })
+    }
+
+    fn merge_icons(parent: Value, child: Value) -> Value {
+        merge_toml_values(parent, child, 3)
+    }
+
+    /// Returns the default icon flavor.
+    /// The `theme` is needed in order to load default styles for diagnostic icons.
+    pub fn default(&self, theme: &Theme) -> Icons {
+        let mut icons = DEFAULT_ICONS.clone();
+        icons.set_diagnostic_icons_base_style(theme);
+        icons.set_symbolkind_icons_base_style(theme);
+        icons
+    }
+}
+
+impl From<Value> for Icons {
+    fn from(value: Value) -> Self {
+        if let Value::Table(mut table) = value {
+            // remove inherits from value to prevent errors
+            table.remove("inherits");
+            let toml_str = table.to_string();
+            match toml::from_str(&toml_str) {
+                Ok(icons) => icons,
+                Err(e) => {
+                    log::error!("Failed to load icons, falling back to default: {}\n", e);
+                    DEFAULT_ICONS.clone()
+                }
+            }
+        } else {
+            warn!("Expected icons TOML value to be a table, found {:?}", value);
+            DEFAULT_ICONS.clone()
+        }
+    }
+}

helix-view/src/lib.rs

@@ -12,6 +12,7 @@ pub mod handlers {
     pub mod lsp;
 }
 pub mod base64;
+pub mod icons;
 pub mod info;
 pub mod input;
 pub mod keyboard;

helix-view/src/theme.rs

@@ -1,10 +1,10 @@
 use std::{
     collections::{HashMap, HashSet},
-    path::{Path, PathBuf},
+    path::PathBuf,
     str,
 };
 
-use anyhow::{anyhow, Result};
+use anyhow::Result;
 use helix_core::hashmap;
 use helix_loader::merge_toml_values;
 use log::warn;
@@ -61,7 +61,18 @@ impl Loader {
         }
 
         let mut visited_paths = HashSet::new();
-        let theme = self.load_theme(name, &mut visited_paths).map(Theme::from)?;
+        let default_themes = HashMap::from([
+            ("default", &DEFAULT_THEME_DATA),
+            ("base16_default", &BASE16_DEFAULT_THEME_DATA),
+        ]);
+        let theme = helix_loader::load_inheritable_toml(
+            name,
+            &self.theme_dirs,
+            &mut visited_paths,
+            &default_themes,
+            Self::merge_themes,
+        )
+        .map(Theme::from)?;
 
         Ok(Theme {
             name: name.into(),
@@ -69,62 +80,8 @@ impl Loader {
         })
     }
 
-    /// Recursively load a theme, merging with any inherited parent themes.
-    ///
-    /// The paths that have been visited in the inheritance hierarchy are tracked
-    /// to detect and avoid cycling.
-    ///
-    /// It is possible for one file to inherit from another file with the same name
-    /// so long as the second file is in a themes directory with lower priority.
-    /// However, it is not recommended that users do this as it will make tracing
-    /// errors more difficult.
-    fn load_theme(&self, name: &str, visited_paths: &mut HashSet<PathBuf>) -> Result<Value> {
-        let path = self.path(name, visited_paths)?;
-
-        let theme_toml = self.load_toml(path)?;
-
-        let inherits = theme_toml.get("inherits");
-
-        let theme_toml = if let Some(parent_theme_name) = inherits {
-            let parent_theme_name = parent_theme_name.as_str().ok_or_else(|| {
-                anyhow!(
-                    "Theme: expected 'inherits' to be a string: {}",
-                    parent_theme_name
-                )
-            })?;
-
-            let parent_theme_toml = match parent_theme_name {
-                // load default themes's toml from const.
-                "default" => DEFAULT_THEME_DATA.clone(),
-                "base16_default" => BASE16_DEFAULT_THEME_DATA.clone(),
-                _ => self.load_theme(parent_theme_name, visited_paths)?,
-            };
-
-            self.merge_themes(parent_theme_toml, theme_toml)
-        } else {
-            theme_toml
-        };
-
-        Ok(theme_toml)
-    }
-
-    pub fn read_names(path: &Path) -> Vec<String> {
-        std::fs::read_dir(path)
-            .map(|entries| {
-                entries
-                    .filter_map(|entry| {
-                        let entry = entry.ok()?;
-                        let path = entry.path();
-                        (path.extension()? == "toml")
-                            .then(|| path.file_stem().unwrap().to_string_lossy().into_owned())
-                    })
-                    .collect()
-            })
-            .unwrap_or_default()
-    }
-
     // merge one theme into the parent theme
-    fn merge_themes(&self, parent_theme_toml: Value, theme_toml: Value) -> Value {
+    fn merge_themes(parent_theme_toml: Value, theme_toml: Value) -> Value {
         let parent_palette = parent_theme_toml.get("palette");
         let palette = theme_toml.get("palette");
 
@@ -149,45 +106,6 @@ impl Loader {
         merge_toml_values(theme, palette.into(), 1)
     }
 
-    // Loads the theme data as `toml::Value`
-    fn load_toml(&self, path: PathBuf) -> Result<Value> {
-        let data = std::fs::read_to_string(path)?;
-        let value = toml::from_str(&data)?;
-
-        Ok(value)
-    }
-
-    /// Returns the path to the theme with the given name
-    ///
-    /// Ignores paths already visited and follows directory priority order.
-    fn path(&self, name: &str, visited_paths: &mut HashSet<PathBuf>) -> Result<PathBuf> {
-        let filename = format!("{}.toml", name);
-
-        let mut cycle_found = false; // track if there was a path, but it was in a cycle
-        self.theme_dirs
-            .iter()
-            .find_map(|dir| {
-                let path = dir.join(&filename);
-                if !path.exists() {
-                    None
-                } else if visited_paths.contains(&path) {
-                    // Avoiding cycle, continuing to look in lower priority directories
-                    cycle_found = true;
-                    None
-                } else {
-                    visited_paths.insert(path.clone());
-                    Some(path)
-                }
-            })
-            .ok_or_else(|| {
-                if cycle_found {
-                    anyhow!("Theme: cycle found in inheriting: {}", name)
-                } else {
-                    anyhow!("Theme: file not found for: {}", name)
-                }
-            })
-    }
-
     pub fn default_theme(&self, true_color: bool) -> Theme {
         if true_color {
             self.default()

icons.toml

@@ -0,0 +1,19 @@
+name = "default"
+
+# All icons here must be available as [default Unicode characters](https://en.wikipedia.org/wiki/List_of_Unicode_characters)
+
+[diagnostic]
+error = {icon = "●"}
+warning = {icon = "●"}
+info = {icon = "●"}
+hint = {icon = "●"}
+
+[breakpoint]
+verified = {icon = "●"}
+unverified = {icon = "◯"} 
+pause-indicator = {icon = "▶"}
+
+[diff]
+added = {icon = "▍"}
+deleted = {icon = "▔"}
+modified = {icon = "▍"}

logo.svg

@@ -1 +1,66 @@
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   version="1.1"
+   xml:space="preserve"
+   style="fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:2;"
+   viewBox="663.38 37.57 575.35 903.75"
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+   sodipodi:docname="logo.svg"
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+   xmlns:svg="http://www.w3.org/2000/svg"><defs
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+   inkscape:showpageshadow="2"
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logo_dark.svg

@@ -8,7 +8,7 @@
    sodipodi:docname="logo_dark.svg"
    width="2087.0059"
    height="903.71997"
-   inkscape:version="1.2.1 (9c6d41e410, 2022-07-14)"
+   inkscape:version="1.2.2 (b0a8486541, 2022-12-01)"
    xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
    xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
    xmlns="http://www.w3.org/2000/svg"
@@ -53,13 +53,13 @@
    inkscape:pagecheckerboard="0"
    inkscape:deskcolor="#d1d1d1"
    showgrid="false"
-   inkscape:zoom="0.28409405"
-   inkscape:cx="1904.2989"
-   inkscape:cy="633.59299"
+   inkscape:zoom="0.40176966"
+   inkscape:cx="801.45425"
+   inkscape:cy="775.31987"
    inkscape:window-width="1908"
-   inkscape:window-height="2075"
-   inkscape:window-x="26"
-   inkscape:window-y="23"
+   inkscape:window-height="996"
+   inkscape:window-x="4"
+   inkscape:window-y="0"
    inkscape:window-maximized="0"
    inkscape:current-layer="svg22" />     <g
    transform="translate(-31352.726,-1817.2547)"
@@ -112,4 +112,24 @@
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    transform="translate(663.38,37.570044)"
    id="text14661"
-   style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:997.723px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, @wght=700';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;font-variation-settings:'wght' 700;white-space:pre;shape-inside:url(#rect14663);display:inline;fill:#2a292f;fill-opacity:1;stroke:#2a292f;stroke-width:6.652;stroke-dasharray:none;stroke-opacity:1" /></svg>
+   style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:997.723px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, @wght=700';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;font-variation-settings:'wght' 700;white-space:pre;shape-inside:url(#rect14663);display:inline;fill:#2a292f;fill-opacity:1;stroke:#2a292f;stroke-width:6.652;stroke-dasharray:none;stroke-opacity:1" /><text
+   xml:space="preserve"
+   style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:742.268px;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold';clip-rule:evenodd;fill:#8ff8b6;fill-opacity:1;fill-rule:evenodd;stroke:#8ff8b6;stroke-width:20;stroke-linecap:square;stroke-linejoin:miter;stroke-miterlimit:2;stroke-dasharray:none;stroke-opacity:1;paint-order:normal"
+   x="798.0365"
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+     style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:742.268px;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold';fill:#8ff8b6;fill-opacity:1;stroke:#8ff8b6;stroke-width:20;stroke-linecap:square;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1;paint-order:normal">+</tspan></text><text
+   xml:space="preserve"
+   style="font-weight:bold;font-size:200px;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold';clip-rule:evenodd;fill:#8ff8b6;fill-opacity:1;fill-rule:evenodd;stroke:#fe92c5;stroke-width:20;stroke-linecap:square;stroke-linejoin:round;stroke-miterlimit:2"
+   x="2269.8679"
+   y="884.69611"
+   id="text416"><tspan
+     sodipodi:role="line"
+     id="tspan414"
+     x="2269.8679"
+     y="884.69611"
+     style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:200px;font-family:'FiraCode Nerd Font';-inkscape-font-specification:'FiraCode Nerd Font Bold';fill:#8ff8b6;fill-opacity:1;stroke:none">plus</tspan></text></svg>

logo_light.svg

@@ -8,7 +8,7 @@
    sodipodi:docname="logo_light.svg"
    width="2087.0059"
    height="903.71997"
-   inkscape:version="1.2.1 (9c6d41e410, 2022-07-14)"
+   inkscape:version="1.2.2 (b0a8486541, 2022-12-01)"
    xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
    xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
    xmlns="http://www.w3.org/2000/svg"
@@ -53,13 +53,13 @@
    inkscape:pagecheckerboard="0"
    inkscape:deskcolor="#d1d1d1"
    showgrid="false"
-   inkscape:zoom="0.28409405"
-   inkscape:cx="1904.2989"
-   inkscape:cy="633.59299"
+   inkscape:zoom="0.40176966"
+   inkscape:cx="752.91897"
+   inkscape:cy="551.31092"
    inkscape:window-width="1908"
-   inkscape:window-height="2075"
-   inkscape:window-x="26"
-   inkscape:window-y="23"
+   inkscape:window-height="996"
+   inkscape:window-x="4"
+   inkscape:window-y="0"
    inkscape:window-maximized="0"
    inkscape:current-layer="svg22" />     <g
    transform="translate(-31352.726,-1817.2547)"
@@ -112,4 +112,24 @@
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    transform="translate(663.38,37.570044)"
    id="text14661"
-   style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:997.723px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, @wght=700';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;font-variation-settings:'wght' 700;white-space:pre;shape-inside:url(#rect14663);display:inline;fill:#2a292f;fill-opacity:1;stroke:#2a292f;stroke-width:6.652;stroke-dasharray:none;stroke-opacity:1" /></svg>
+   style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:997.723px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, @wght=700';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;font-variation-settings:'wght' 700;white-space:pre;shape-inside:url(#rect14663);display:inline;fill:#2a292f;fill-opacity:1;stroke:#2a292f;stroke-width:6.652;stroke-dasharray:none;stroke-opacity:1" /><text
+   xml:space="preserve"
+   style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:742.268px;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold';clip-rule:evenodd;fill:#8ff8b6;fill-opacity:1;fill-rule:evenodd;stroke:#8ff8b6;stroke-width:20;stroke-linecap:square;stroke-linejoin:miter;stroke-miterlimit:2;stroke-dasharray:none;stroke-opacity:1;paint-order:normal"
+   x="797.79547"
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+   id="text186"><tspan
+     sodipodi:role="line"
+     id="tspan184"
+     x="797.79547"
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+     style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:742.268px;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold';fill:#8ff8b6;fill-opacity:1;stroke:#8ff8b6;stroke-width:20;stroke-linecap:square;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1;paint-order:normal">+</tspan></text><text
+   xml:space="preserve"
+   style="font-weight:bold;font-size:200px;font-family:sans-serif;-inkscape-font-specification:'sans-serif Bold';fill:#8ff8b6;fill-opacity:1;stroke:#fe92c5;stroke-width:20;stroke-linecap:square"
+   x="2269.3535"
+   y="886.34314"
+   id="text416"><tspan
+     sodipodi:role="line"
+     id="tspan414"
+     x="2269.3535"
+     y="886.34314"
+     style="font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;font-size:200px;font-family:'FiraCode Nerd Font';-inkscape-font-specification:'FiraCode Nerd Font Bold';fill:#8ff8b6;fill-opacity:1;stroke:none">plus</tspan></text></svg>

runtime/icons/nerdfonts.toml

@@ -0,0 +1,285 @@
+name = "nerdfonts"
+
+[diagnostic]
+error = {icon = ""}
+warning = {icon = ""}
+info = {icon = ""}
+hint = {icon = ""}
+
+[breakpoint]
+verified = {icon = "●"}
+unverified = {icon = "◯"} 
+pause-indicator = {icon = "▶"}
+
+[diff]
+added = {icon = "▍"}
+deleted = {icon = "▔"}
+modified = {icon = "▍"}
+
+[symbol-kind]
+file = {icon = ""}
+module = {icon = ""}
+namespace = {icon = ""}
+package = {icon = ""}
+class = {icon = "ﴯ"}
+method = {icon = ""}
+property = {icon = ""}
+field = {icon = ""}
+constructor = {icon = ""}
+enumeration = {icon = ""}
+interface = {icon = ""}
+variable = {icon = ""}
+function = {icon = ""}
+constant = {icon = ""}
+string = {icon = ""}
+number = {icon = ""}
+boolean = {icon = ""}
+array = {icon = ""}
+object = {icon = ""}
+key = {icon = ""}
+null = {icon = "ﳠ"}
+enum-member = {icon = ""}
+structure = {icon = "פּ"}
+event = {icon = ""}
+operator = {icon = ""}
+type-parameter = {icon = ""}
+
+[ui]
+file = {icon = ""}
+folder = {icon = ""}
+folder_opened = {icon = ""}
+vcs_branch = {icon = ""}
+
+[mime-type]
+# This is heavily based on https://github.com/nvim-tree/nvim-web-devicons
+".babelrc" = { icon = "ﬥ", color = "#cbcb41" }
+".bash_profile" = { icon = "", color = "#89e051" }
+".bashrc" = { icon = "", color = "#89e051" }
+".DS_Store" = { icon = "", color = "#41535b" }
+".gitattributes" = { icon = "", color = "#41535b" }
+".gitconfig" = { icon = "", color = "#41535b" }
+".gitignore" = { icon = "", color = "#41535b" }
+".gitlab-ci.yml" = { icon = "", color = "#e24329" }
+".gitmodules" = { icon = "", color = "#41535b" }
+".gvimrc" = { icon = "", color = "#019833" }
+".npmignore" = { icon = "", color = "#E8274B" }
+".npmrc" = { icon = "", color = "#E8274B" }
+".settings.json" = { icon = "", color = "#854CC7" }
+".vimrc" = { icon = "", color = "#019833" }
+".zprofile" = { icon = "", color = "#89e051" }
+".zshenv" = { icon = "", color = "#89e051" }
+".zshrc" = { icon = "", color = "#89e051" }
+"Brewfile" = { icon = "", color = "#701516" }
+"CMakeLists.txt" = { icon = "", color = "#6d8086" }
+"COMMIT_EDITMSG" = { icon = "", color = "#41535b" }
+"COPYING" = { icon = "", color = "#cbcb41" }
+"COPYING.LESSER" = { icon = "", color = "#cbcb41" }
+"Dockerfile" = { icon = "", color = "#384d54" }
+"Gemfile$" = { icon = "", color = "#701516" }
+"LICENSE" = { icon = "", color = "#d0bf41" }
+"R" = { icon = "ﳒ", color = "#358a5b" }
+"Rmd" = { icon = "", color = "#519aba" }
+"Vagrantfile$" = { icon = "", color = "#1563FF" }
+"_gvimrc" = { icon = "", color = "#019833" }
+"_vimrc" = { icon = "", color = "#019833" }
+"ai" = { icon = "", color = "#cbcb41" }
+"awk" = { icon = "", color = "#4d5a5e" }
+"bash" = { icon = "", color = "#89e051" }
+"bat" = { icon = "", color = "#C1F12E" }
+"bmp" = { icon = "", color = "#a074c4" }
+"c" = { icon = "", color = "#599eff" }
+"c++" = { icon = "", color = "#f34b7d" }
+"cbl" = { icon = "⚙", color = "#005ca5" }
+"cc" = { icon = "", color = "#f34b7d" }
+"cfg" = { icon = "", color = "#ECECEC" }
+"clj" = { icon = "", color = "#8dc149" }
+"cljc" = { icon = "", color = "#8dc149" }
+"cljs" = { icon = "", color = "#519aba" }
+"cljd" = { icon = "", color = "#519aba" }
+"cmake" = { icon = "", color = "#6d8086" }
+"cob" = { icon = "⚙", color = "#005ca5" }
+"cobol" = { icon = "⚙", color = "#005ca5" }
+"coffee" = { icon = "", color = "#cbcb41" }
+"conf" = { icon = "", color = "#6d8086" }
+"config.ru" = { icon = "", color = "#701516" }
+"cp" = { icon = "", color = "#519aba" }
+"cpp" = { icon = "", color = "#519aba" }
+"cpy" = { icon = "⚙", color = "#005ca5" }
+"cr" = { icon = "" }
+"cs" = { icon = "", color = "#596706" }
+"csh" = { icon = "", color = "#4d5a5e" }
+"cson" = { icon = "", color = "#cbcb41" }
+"css" = { icon = "", color = "#42a5f5" }
+"csv" = { icon = "", color = "#89e051" }
+"cxx" = { icon = "", color = "#519aba" }
+"d" = { icon = "", color = "#427819" }
+"dart" = { icon = "", color = "#03589C" }
+"db" = { icon = "", color = "#dad8d8" }
+"desktop" = { icon = "", color = "#563d7c" }
+"diff" = { icon = "", color = "#41535b" }
+"doc" = { icon = "", color = "#185abd" }
+"dockerfile" = { icon = "", color = "#384d54" }
+"drl" = { icon = "", color = "#ffafaf" }
+"dropbox" = { icon = "", color = "#0061FE" }
+"dump" = { icon = "", color = "#dad8d8" }
+"edn" = { icon = "", color = "#519aba" }
+"eex" = { icon = "", color = "#a074c4" }
+"ejs" = { icon = "", color = "#cbcb41" }
+"elm" = { icon = "", color = "#519aba" }
+"epp" = { icon = "", color = "#FFA61A" }
+"erb" = { icon = "", color = "#701516" }
+"erl" = { icon = "", color = "#B83998" }
+"ex" = { icon = "", color = "#a074c4" }
+"exs" = { icon = "", color = "#a074c4" }
+"f#" = { icon = "", color = "#519aba" }
+"favicon.ico" = { icon = "", color = "#cbcb41" }
+"fnl" = { icon = "🌜", color = "#fff3d7" }
+"fish" = { icon = "", color = "#4d5a5e" }
+"fs" = { icon = "", color = "#519aba" }
+"fsi" = { icon = "", color = "#519aba" }
+"fsscript" = { icon = "", color = "#519aba" }
+"fsx" = { icon = "", color = "#519aba" }
+"gd" = { icon = "", color = "#6d8086" }
+"gemspec" = { icon = "", color = "#701516" }
+"gif" = { icon = "", color = "#a074c4" }
+"git" = { icon = "", color = "#F14C28" }
+"glb" = { icon = "", color = "#FFB13B" }
+"go" = { icon = "", color = "#519aba" }
+"godot" = { icon = "", color = "#6d8086" }
+"graphql" = { icon = "", color = "#e535ab" }
+"gruntfile" = { icon = "", color = "#e37933" }
+"gulpfile" = { icon = "", color = "#cc3e44" }
+"h" = { icon = "", color = "#a074c4" }
+"haml" = { icon = "", color = "#eaeae1" }
+"hbs" = { icon = "", color = "#f0772b" }
+"heex" = { icon = "", color = "#a074c4" }
+"hh" = { icon = "", color = "#a074c4" }
+"hpp" = { icon = "", color = "#a074c4" }
+"hrl" = { icon = "", color = "#B83998" }
+"hs" = { icon = "", color = "#a074c4" }
+"htm" = { icon = "", color = "#e34c26" }
+"html" = { icon = "", color = "#e44d26" }
+"hxx" = { icon = "", color = "#a074c4" }
+"ico" = { icon = "", color = "#cbcb41" }
+"import" = { icon = "", color = "#ECECEC" }
+"ini" = { icon = "", color = "#6d8086" }
+"java" = { icon = "", color = "#cc3e44" }
+"jl" = { icon = "", color = "#a270ba" }
+"jpeg" = { icon = "", color = "#a074c4" }
+"jpg" = { icon = "", color = "#a074c4" }
+"js" = { icon = "", color = "#cbcb41" }
+"json" = { icon = "", color = "#cbcb41" }
+"json5" = { icon = "ﬥ", color = "#cbcb41" }
+"jsx" = { icon = "", color = "#519aba" }
+"ksh" = { icon = "", color = "#4d5a5e" }
+"kt" = { icon = "", color = "#F88A02" }
+"kts" = { icon = "", color = "#F88A02" }
+"leex" = { icon = "", color = "#a074c4" }
+"less" = { icon = "", color = "#563d7c" }
+"lhs" = { icon = "", color = "#a074c4" }
+"license" = { icon = "", color = "#cbcb41" }
+"lua" = { icon = "", color = "#51a0cf" }
+"luau" = { icon = "", color = "#51a0cf" }
+"makefile" = { icon = "", color = "#6d8086" }
+"markdown" = { icon = "", color = "#d74c4c" }
+"material" = { icon = "", color = "#B83998" }
+"md" = { icon = "", color = "#d74c4c" }
+"mdx" = { icon = "", color = "#d74c4c" }
+"mint" = { icon = "", color = "#87c095" }
+"mix.lock" = { icon = "", color = "#a074c4" }
+"mjs" = { icon = "", color = "#f1e05a" }
+"ml" = { icon = "λ", color = "#e37933" }
+"mli" = { icon = "λ", color = "#e37933" }
+"mo" = { icon = "∞", color = "#9772FB" }
+"mustache" = { icon = "", color = "#e37933" }
+"nim" = { icon = "👑", color = "#f3d400" }
+"nix" = { icon = "", color = "#7ebae4" }
+"node_modules" = { icon = "", color = "#E8274B" }
+"opus" = { icon = "", color = "#F88A02" }
+"otf" = { icon = "", color = "#ECECEC" }
+"package.json" = { icon = "", color = "#e8274b" }
+"package-lock.json" = { icon = "", color = "#7a0d21" }
+"pck" = { icon = "", color = "#6d8086" }
+"pdf" = { icon = "", color = "#b30b00" }
+"php" = { icon = "", color = "#a074c4" }
+"pl" = { icon = "", color = "#519aba" }
+"pm" = { icon = "", color = "#519aba" }
+"png" = { icon = "", color = "#a074c4" }
+"pp" = { icon = "", color = "#FFA61A" }
+"ppt" = { icon = "", color = "#cb4a32" }
+"pro" = { icon = "", color = "#e4b854" }
+"Procfile" = { icon = "", color = "#a074c4" }
+"ps1" = { icon = "", color = "#4d5a5e" }
+"psb" = { icon = "", color = "#519aba" }
+"psd" = { icon = "", color = "#519aba" }
+"py" = { icon = "", color = "#ffbc03" }
+"pyc" = { icon = "", color = "#ffe291" }
+"pyd" = { icon = "", color = "#ffe291" }
+"pyo" = { icon = "", color = "#ffe291" }
+"query" = { icon = "", color = "#90a850" }
+"r" = { icon = "ﳒ", color = "#358a5b" }
+"rake" = { icon = "", color = "#701516" }
+"rakefile" = { icon = "", color = "#701516" }
+"rb" = { icon = "", color = "#701516" }
+"rlib" = { icon = "", color = "#dea584" }
+"rmd" = { icon = "", color = "#519aba" }
+"rproj" = { icon = "鉶", color = "#358a5b" }
+"rs" = { icon = "", color = "#dea584" }
+"rss" = { icon = "", color = "#FB9D3B" }
+"sass" = { icon = "", color = "#f55385" }
+"sbt" = { icon = "", color = "#cc3e44" }
+"scala" = { icon = "", color = "#cc3e44" }
+"scm" = { icon = "ﬦ" }
+"scss" = { icon = "", color = "#f55385" }
+"sh" = { icon = "", color = "#4d5a5e" }
+"sig" = { icon = "λ", color = "#e37933" }
+"slim" = { icon = "", color = "#e34c26" }
+"sln" = { icon = "", color = "#854CC7" }
+"sml" = { icon = "λ", color = "#e37933" }
+"sql" = { icon = "", color = "#dad8d8" }
+"sqlite" = { icon = "", color = "#dad8d8" }
+"sqlite3" = { icon = "", color = "#dad8d8" }
+"styl" = { icon = "", color = "#8dc149" }
+"sublime" = { icon = "", color = "#e37933" }
+"suo" = { icon = "", color = "#854CC7" }
+"sv" = { icon = "", color = "#019833" }
+"svelte" = { icon = "", color = "#ff3e00" }
+"svh" = { icon = "", color = "#019833" }
+"svg" = { icon = "ﰟ", color = "#FFB13B" }
+"swift" = { icon = "", color = "#e37933" }
+"t" = { icon = "", color = "#519aba" }
+"tbc" = { icon = "﯑", color = "#1e5cb3" }
+"tcl" = { icon = "﯑", color = "#1e5cb3" }
+"terminal" = { icon = "", color = "#31B53E" }
+"tex" = { icon = "ﭨ", color = "#3D6117" }
+"tf" = { icon = "", color = "#5F43E9" }
+"tfvars" = { icon = "", color = "#5F43E9" }
+"toml" = { icon = "", color = "#6d8086" }
+"tres" = { icon = "", color = "#cbcb41" }
+"ts" = { icon = "", color = "#519aba" }
+"tscn" = { icon = "", color = "#a074c4" }
+"tsx" = { icon = "", color = "#519aba" }
+"twig" = { icon = "", color = "#8dc149" }
+"txt" = { icon = "", color = "#89e051" }
+"v" = { icon = "", color = "#019833" }
+"vh" = { icon = "", color = "#019833" }
+"vhd" = { icon = "", color = "#019833" }
+"vhdl" = { icon = "", color = "#019833" }
+"vim" = { icon = "", color = "#019833" }
+"vue" = { icon = "﵂", color = "#8dc149" }
+"webmanifest" = { icon = "", color = "#f1e05a" }
+"webp" = { icon = "", color = "#a074c4" }
+"webpack" = { icon = "ﰩ", color = "#519aba" }
+"xcplayground" = { icon = "", color = "#e37933" }
+"xls" = { icon = "", color = "#207245" }
+"xml" = { icon = "謹", color = "#e37933" }
+"xul" = { icon = "", color = "#e37933" }
+"yaml" = { icon = "", color = "#6d8086" }
+"yml" = { icon = "", color = "#6d8086" }
+"zig" = { icon = "", color = "#f69a1b" }
+"zsh" = { icon = "", color = "#89e051" }
+"sol" = { icon = "ﲹ", color = "#519aba" }
+".env" = { icon = "", color = "#faf743" }
+"prisma" = { icon = "卑" }
+"lock" = { icon = "", color = "#bbbbbb" }
+"log" = { icon = "" }

runtime/themes/dracula-purple.toml

@@ -0,0 +1,84 @@
+# Author : Sam Sartor <me@samsartor.com>, Trivernis <trivernis@pm.me>
+# A port of https://github.com/bceskavich/dracula-at-night
+"comment" = { fg = "comment" }
+"constant" = { fg = "purple" }
+"constant.character.escape" = { fg = "pink" }
+"function" = { fg = "green" }
+"keyword" = { fg = "pink" }
+"operator" = { fg = "pink" }
+"special" = { fg = "yellow" }
+"punctuation" = { fg = "foreground" }
+"string" = { fg = "yellow" }
+"string.regexp" = { fg = "red" }
+"tag" = { fg = "pink" }
+"attribute" = { fg = "cyan" }
+"type" = { fg = "cyan", modifiers = ["italic"] }
+"type.enum.variant" = { fg = "foreground", modifiers = ["italic"] }
+"variable" = { fg = "foreground" }
+"variable.builtin" = { fg = "cyan", modifiers = ["italic"] }
+"variable.parameter" = { fg ="orange", modifiers = ["italic"] }
+
+"diff.plus" = { fg = "green" }
+"diff.delta" = { fg = "orange" }
+"diff.minus" = { fg = "red" }
+
+"ui.background" = { fg = "foreground", bg = "background" }
+"ui.cursor" =  { fg = "background", bg = "orange", modifiers = ["dim"] }
+"ui.cursor.match" = { fg = "green", modifiers = ["underlined"] }
+"ui.cursor.primary" = { fg = "background", bg = "cyan", modifier = ["dim"] }
+"ui.cursorline" = {bg =  "background_dark"}
+"ui.help" = { fg = "foreground", bg = "background_dark" }
+"ui.linenr" = { fg = "comment" }
+"ui.linenr.selected" = { fg = "foreground" }
+"ui.menu" = { fg = "foreground", bg = "background_dark" }
+"ui.menu.selected" = { fg = "cyan", bg = "background_dark" }
+"ui.popup" = { fg = "foreground", bg = "background_dark" }
+"ui.selection" = { fg = "background", bg = "purple", modifiers = ["dim"] }
+"ui.selection.primary" = { fg = "background", bg = "pink" }
+"ui.text" = { fg = "foreground" }
+"ui.text.focus" = { fg = "cyan" }
+"ui.window" = { fg = "foreground" }
+"ui.virtual.ruler" = { bg = "ruler" }
+"ui.virtual.indent-guide" = { fg = "ruler" }
+"ui.virtual" = { fg = "hint" }
+
+"ui.statusline" = { fg = "foreground", bg = "background_dark" }
+"ui.statusline.inactive" = { fg = "comment", bg = "background_dark" }
+"ui.statusline.normal" = { fg = "background_dark", bg = "purple"}
+"ui.statusline.insert" = { fg = "background_dark", bg = "pink"}
+"ui.statusline.select" = { fg = "background_dark", bg = "cyan"}
+
+"error" = { fg = "red" }
+"warning" = { fg = "cyan" }
+
+"markup.heading" = { fg = "purple", modifiers = ["bold"] }
+"markup.list" = "cyan"
+"markup.bold" = { fg = "orange", modifiers = ["bold"] }
+"markup.italic" = { fg = "yellow", modifiers = ["italic"] }
+"markup.link.url" = "cyan"
+"markup.link.text" = "pink"
+"markup.quote" = { fg = "yellow", modifiers = ["italic"] }
+"markup.raw" = { fg = "foreground" }
+
+"ui.explorer.file" = { fg = "foreground" }
+"ui.explorer.dir" = { fg = "cyan" }
+"ui.explorer.exe" = { fg = "foreground" }
+"ui.explorer.focus" = { modifiers = ["reversed"] }
+"ui.explorer.unfocus" = { bg = "comment" }
+
+rainbow = ["#7c5ea3", "#9c5b95",  "#9c5e80", "#6b4466"]
+
+[palette]
+background = "#3A2A4D"
+background_dark = "#2B1C3D"
+foreground = "#f8f8f2"
+ruler = "#453254"
+comment = "#886C9C"
+hint = "#8a56b0"
+red = "#ff5555"
+orange = "#ffb86c"
+yellow = "#f1fa8c"
+green = "#50fa7b"
+purple = "#bd93f9"
+cyan = "#8be9fd"
+pink = "#ff79c6"

theme.toml

@@ -1,107 +1,84 @@
-attribute = "lilac"
-keyword = "almond"
-"keyword.directive" = "lilac" # -- preprocessor comments (#if in C)
-namespace = "lilac"
-punctuation = "lavender"
-"punctuation.delimiter" = "lavender"
-operator = "lilac"
-special = "honey"
-"variable.other.member" = "white"
-variable = "lavender"
-# variable = "almond" # TODO: metavariables only
-# "variable.parameter" = { fg = "lavender", modifiers = ["underlined"] }
-"variable.parameter" = { fg = "lavender" }
-"variable.builtin" = "mint"
-type = "white"
-"type.builtin" = "white" # TODO: distinguish?
-constructor = "lilac"
-function = "white"
-"function.macro" = "lilac"
-"function.builtin" = "white"
-tag = "almond"
-comment = "sirocco"
-constant = "white"
-"constant.builtin" = "white"
-string = "silver"
-"constant.numeric" = "chamois"
-"constant.character.escape" = "honey"
-# used for lifetimes
-label = "honey"
+# Author : Sam Sartor <me@samsartor.com>, Trivernis <trivernis@pm.me>
+# A port of https://github.com/bceskavich/dracula-at-night
+"comment" = { fg = "comment" }
+"constant" = { fg = "purple" }
+"constant.character.escape" = { fg = "pink" }
+"function" = { fg = "green" }
+"keyword" = { fg = "pink" }
+"operator" = { fg = "pink" }
+"special" = { fg = "yellow" }
+"punctuation" = { fg = "foreground" }
+"string" = { fg = "yellow" }
+"string.regexp" = { fg = "red" }
+"tag" = { fg = "pink" }
+"attribute" = { fg = "cyan" }
+"type" = { fg = "cyan", modifiers = ["italic"] }
+"type.enum.variant" = { fg = "foreground", modifiers = ["italic"] }
+"variable" = { fg = "foreground" }
+"variable.builtin" = { fg = "cyan", modifiers = ["italic"] }
+"variable.parameter" = { fg ="orange", modifiers = ["italic"] }
 
-"markup.heading" = "lilac"
-"markup.bold" = { modifiers = ["bold"] }
-"markup.italic" = { modifiers = ["italic"] }
-"markup.strikethrough" = { modifiers = ["crossed_out"] }
-"markup.link.url" = { fg = "silver", modifiers = ["underlined"] }
-"markup.link.text" = "almond"
-"markup.raw" = "almond"
+"diff.plus" = { fg = "green" }
+"diff.delta" = { fg = "orange" }
+"diff.minus" = { fg = "red" }
 
-"diff.plus" = "#35bf86"
-"diff.minus" = "#f22c86"
-"diff.delta" = "#6f44f0"
+"ui.background" = { fg = "foreground", bg = "background" }
+"ui.cursor" =  { fg = "background", bg = "orange", modifiers = ["dim"] }
+"ui.cursor.match" = { fg = "green", modifiers = ["underlined"] }
+"ui.cursor.primary" = { fg = "background", bg = "cyan", modifier = ["dim"] }
+"ui.cursorline" = {bg =  "background_dark"}
+"ui.help" = { fg = "foreground", bg = "background_dark" }
+"ui.linenr" = { fg = "comment" }
+"ui.linenr.selected" = { fg = "foreground" }
+"ui.menu" = { fg = "foreground", bg = "background_dark" }
+"ui.menu.selected" = { fg = "cyan", bg = "background_dark" }
+"ui.popup" = { fg = "foreground", bg = "background_dark" }
+"ui.selection" = { fg = "background", bg = "purple", modifiers = ["dim"] }
+"ui.selection.primary" = { fg = "background", bg = "pink" }
+"ui.text" = { fg = "foreground" }
+"ui.text.focus" = { fg = "cyan" }
+"ui.window" = { fg = "foreground" }
+"ui.virtual.ruler" = { bg = "ruler" }
+"ui.virtual.indent-guide" = { fg = "ruler" }
+"ui.virtual" = { fg = "hint" }
 
-# TODO: diferentiate doc comment
-# concat (ERROR) @error.syntax and "MISSING ;" selectors for errors
+"ui.statusline" = { fg = "foreground", bg = "background_dark" }
+"ui.statusline.inactive" = { fg = "comment", bg = "background_dark" }
+"ui.statusline.normal" = { fg = "background_dark", bg = "purple"}
+"ui.statusline.insert" = { fg = "background_dark", bg = "pink"}
+"ui.statusline.select" = { fg = "background_dark", bg = "cyan"}
 
-"ui.background" = { bg = "midnight" }
-"ui.background.separator" = { fg = "comet" }
-"ui.linenr" = { fg = "comet" }
-"ui.linenr.selected" = { fg = "lilac" }
-"ui.statusline" = { fg = "lilac", bg = "revolver" }
-"ui.statusline.inactive" = { fg = "lavender", bg = "revolver" }
-"ui.popup" = { bg = "revolver" }
-"ui.window" = { fg = "bossanova" }
-"ui.help" = { bg = "#7958DC", fg = "#171452" }
+"error" = { fg = "red" }
+"warning" = { fg = "cyan" }
 
-"ui.text" = { fg = "lavender" }
-"ui.text.focus" = { fg = "white" }
-"ui.text.inactive" = "sirocco"
-"ui.virtual" = { fg = "comet" }
+"markup.heading" = { fg = "purple", modifiers = ["bold"] }
+"markup.list" = "cyan"
+"markup.bold" = { fg = "orange", modifiers = ["bold"] }
+"markup.italic" = { fg = "yellow", modifiers = ["italic"] }
+"markup.link.url" = "cyan"
+"markup.link.text" = "pink"
+"markup.quote" = { fg = "yellow", modifiers = ["italic"] }
+"markup.raw" = { fg = "foreground" }
 
-"ui.virtual.indent-guide" = { fg = "comet" }
+"ui.explorer.file" = { fg = "foreground" }
+"ui.explorer.dir" = { fg = "cyan" }
+"ui.explorer.exe" = { fg = "foreground" }
+"ui.explorer.focus" = { modifiers = ["reversed"] }
+"ui.explorer.unfocus" = { bg = "comment" }
 
-"ui.selection" = { bg = "#540099" }
-"ui.selection.primary" = { bg = "#540099" }
-# TODO: namespace ui.cursor as ui.selection.cursor?
-"ui.cursor.select" = { bg = "delta" }
-"ui.cursor.insert" = { bg = "white" }
-"ui.cursor.match" = { fg = "#212121", bg = "#6C6999" }
-"ui.cursor" = { modifiers = ["reversed"] }
-"ui.cursorline.primary" = { bg = "bossanova" }
-"ui.highlight" = { bg = "bossanova" }
-"ui.highlight.frameline" = { bg = "#634450" }
-"ui.debug" = { fg = "#634450" }
-"ui.debug.breakpoint" = { fg = "apricot" }
-"ui.menu" = { fg = "lavender", bg = "revolver" }
-"ui.menu.selected" = { fg = "revolver", bg = "white" }
-"ui.menu.scroll" = { fg = "lavender", bg = "comet" }
-
-"diagnostic.hint" = { underline = { color = "silver", style = "curl" } }
-"diagnostic.info" = { underline = { color = "delta", style = "curl" } }
-"diagnostic.warning" = { underline = { color = "lightning", style = "curl" } }
-"diagnostic.error" = { underline = { color = "apricot", style = "curl" } }
-
-warning = "lightning"
-error = "apricot"
-info = "delta"
-hint = "silver"
+rainbow = ["#7c5ea3", "#9c5b95",  "#9c5e80", "#6b4466"]
 
 [palette]
-white = "#ffffff"
-lilac = "#dbbfef"
-lavender = "#a4a0e8"
-comet = "#5a5977"
-bossanova = "#452859"
-midnight = "#3b224c"
-revolver = "#281733"
-
-silver = "#cccccc"
-sirocco = "#697C81"
-mint = "#9ff28f"
-almond = "#eccdba"
-chamois = "#E8DCA0"
-honey = "#efba5d"
-
-apricot = "#f47868"
-lightning = "#ffcd1c"
-delta = "#6F44F0"
+background = "#3A2A4D"
+background_dark = "#2B1C3D"
+foreground = "#f8f8f2"
+ruler = "#453254"
+comment = "#886C9C"
+hint = "#8a56b0"
+red = "#ff5555"
+orange = "#ffb86c"
+yellow = "#f1fa8c"
+green = "#50fa7b"
+purple = "#bd93f9"
+cyan = "#8be9fd"
+pink = "#ff79c6"

xtask/src/themelint.rs

@@ -1,8 +1,6 @@
 use crate::path;
 use crate::DynError;
-use helix_view::theme::Loader;
-use helix_view::theme::Modifier;
-use helix_view::Theme;
+use helix_view::{theme::Modifier, Theme};
 
 struct Rule {
     fg: Option<&'static str>,
@@ -180,7 +178,7 @@ pub fn lint(file: String) -> Result<(), DynError> {
 }
 
 pub fn lint_all() -> Result<(), DynError> {
-    let files = Loader::read_names(path::themes().as_path());
+    let files = helix_loader::read_toml_names(path::themes().as_path());
     let files_count = files.len();
     let ok_files_count = files
         .into_iter()