N as extend with search (for now, N should be search_prev).

helix-core/src/selection.rs

@@ -159,6 +159,12 @@ impl Selection {
         }
     }
 
+    pub fn add(mut self, range: Range) -> Self {
+        let index = self.ranges.len();
+        self.ranges.push(range);
+
+        Self::normalize(self.ranges, index)
+    }
     // add_range // push
     // replace_range
 
@@ -204,11 +210,6 @@ impl Selection {
         Self::single(pos, pos)
     }
 
-    // TODO: consume an iterator or a vec to reduce allocations?
-    #[must_use]
-    pub fn new(ranges: SmallVec<[Range; 1]>, primary_index: usize) -> Self {
-        assert!(!ranges.is_empty());
-
     fn normalize(mut ranges: SmallVec<[Range; 1]>, mut primary_index: usize) -> Selection {
         let primary = ranges[primary_index];
         ranges.sort_unstable_by_key(Range::from);
@@ -251,6 +252,11 @@ impl Selection {
         }
     }
 
+    // TODO: consume an iterator or a vec to reduce allocations?
+    #[must_use]
+    pub fn new(ranges: SmallVec<[Range; 1]>, primary_index: usize) -> Self {
+        assert!(!ranges.is_empty());
+
         // fast path for a single selection (cursor)
         if ranges.len() == 1 {
             return Self {
@@ -260,7 +266,7 @@ impl Selection {
         }
 
         // TODO: only normalize if needed (any ranges out of order)
-        normalize(ranges, primary_index)
+        Self::normalize(ranges, primary_index)
     }
 
     /// Takes a closure and maps each selection over the closure.

helix-term/src/commands.rs

@@ -608,9 +608,10 @@ pub fn split_selection_on_newline(cx: &mut Context) {
 // I'd probably collect all the matches right now and store the current index. The cache needs
 // wiping if input happens.
 
-fn _search(doc: &mut Document, view_id: ViewId, contents: &str, regex: &Regex) {
+fn _search(doc: &mut Document, view_id: ViewId, contents: &str, regex: &Regex, extend: bool) {
     let text = doc.text();
-    let start = doc.selection(view_id).cursor();
+    let selection = doc.selection(view_id);
+    let start = selection.cursor();
 
     // use find_at to find the next match after the cursor, loop around the end
     let mat = regex
@@ -619,7 +620,13 @@ fn _search(doc: &mut Document, view_id: ViewId, contents: &str, regex: &Regex) {
     if let Some(mat) = mat {
         let start = text.byte_to_char(mat.start());
         let end = text.byte_to_char(mat.end());
-        let selection = Selection::single(start, end - 1);
+
+        let selection = if extend {
+            selection.clone().add(Range::new(start, end - 1))
+        } else {
+            Selection::single(start, end - 1)
+        };
+
         // TODO: (first_match, regex) stuff in register?
         doc.set_selection(view_id, selection);
     };
@@ -639,7 +646,7 @@ pub fn search(cx: &mut Context) {
     let prompt = ui::regex_prompt(cx, "search:".to_string(), move |doc, regex| {
         let text = doc.text();
         let start = doc.selection(view_id).cursor();
-        _search(doc, view_id, &contents, &regex);
+        _search(doc, view_id, &contents, &regex, false);
 
         // TODO: only store on enter (accept), not update
         register::set('\\', vec![regex.as_str().to_string()]);
@@ -648,17 +655,25 @@ pub fn search(cx: &mut Context) {
     cx.push_layer(Box::new(prompt));
 }
 
-pub fn search_next(cx: &mut Context) {
+pub fn _search_next(cx: &mut Context, extend: bool) {
     if let Some(query) = register::get('\\') {
         let query = query.first().unwrap();
         let view_id = cx.view_id;
         let doc = cx.doc();
         let contents = doc.text().slice(..).to_string();
         let regex = Regex::new(&query).unwrap();
-        _search(doc, view_id, &contents, &regex);
+        _search(doc, view_id, &contents, &regex, extend);
     }
 }
 
+pub fn search_next(cx: &mut Context) {
+    _search_next(cx, false);
+}
+
+pub fn extend_search_next(cx: &mut Context) {
+    _search_next(cx, true);
+}
+
 pub fn search_selection(cx: &mut Context) {
     let (view, doc) = cx.current();
     let contents = doc.text().slice(..);

helix-term/src/keymap.rs

@@ -199,6 +199,7 @@ pub fn default() -> Keymaps {
         key!('/') => commands::search,
         // ? for search_reverse
         key!('n') => commands::search_next,
+        shift!('N') => commands::extend_search_next,
         // N for search_prev
         key!('*') => commands::search_selection,
 

helix-term/src/ui/editor.rs

@@ -61,6 +61,7 @@ impl EditorView {
             view.area.width - OFFSET,
             view.area.height.saturating_sub(1),
         ); // - 1 for statusline
+
         self.render_buffer(doc, view, area, surface, theme, is_focused);
 
         // if we're not at the edge of the screen, draw a right border