Add function to get the line ending of a str slice.

This is needed in some places.

helix-core/src/lib.rs

@@ -116,7 +116,5 @@ pub use syntax::Syntax;
 pub use diagnostic::Diagnostic;
 pub use state::State;
 
-pub use line_ending::{
-    auto_detect_line_ending, get_line_ending, line_end_char_index, LineEnding, DEFAULT_LINE_ENDING,
-};
+pub use line_ending::{LineEnding, DEFAULT_LINE_ENDING};
 pub use transaction::{Assoc, Change, ChangeSet, Operation, Transaction};

helix-core/src/line_ending.rs

@@ -128,6 +128,29 @@ pub fn get_line_ending(line: &RopeSlice) -> Option<LineEnding> {
     LineEnding::from_str(g2).or_else(|| LineEnding::from_str(g1))
 }
 
+/// Returns the passed line's line ending, if any.
+pub fn get_line_ending_of_str(line: &str) -> Option<LineEnding> {
+    if line.ends_with("\u{000D}\u{000A}") {
+        Some(LineEnding::Crlf)
+    } else if line.ends_with("\u{000A}") {
+        Some(LineEnding::LF)
+    } else if line.ends_with("\u{000B}") {
+        Some(LineEnding::VT)
+    } else if line.ends_with("\u{000C}") {
+        Some(LineEnding::FF)
+    } else if line.ends_with("\u{000D}") {
+        Some(LineEnding::CR)
+    } else if line.ends_with("\u{0085}") {
+        Some(LineEnding::Nel)
+    } else if line.ends_with("\u{2028}") {
+        Some(LineEnding::LS)
+    } else if line.ends_with("\u{2029}") {
+        Some(LineEnding::PS)
+    } else {
+        None
+    }
+}
+
 /// Returns the char index of the end of the given line, not including its line ending.
 pub fn line_end_char_index(slice: &RopeSlice, line: usize) -> usize {
     slice.line_to_char(line + 1)

helix-core/src/movement.rs

@@ -7,9 +7,10 @@ use crate::{
         categorize_char, char_is_line_ending, char_is_punctuation, char_is_whitespace,
         char_is_word, CharCategory,
     },
-    coords_at_pos, get_line_ending,
+    coords_at_pos,
     graphemes::{nth_next_grapheme_boundary, nth_prev_grapheme_boundary},
-    line_end_char_index, pos_at_coords, Position, Range, RopeSlice,
+    line_ending::{get_line_ending, line_end_char_index},
+    pos_at_coords, Position, Range, RopeSlice,
 };
 
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]

helix-term/src/commands.rs

@@ -1,6 +1,7 @@
 use helix_core::{
-    comment, coords_at_pos, find_first_non_whitespace_char, find_root, get_line_ending, graphemes,
-    indent, line_end_char_index, match_brackets,
+    comment, coords_at_pos, find_first_non_whitespace_char, find_root, graphemes, indent,
+    line_ending::{get_line_ending, get_line_ending_of_str, line_end_char_index},
+    match_brackets,
     movement::{self, Direction},
     object, pos_at_coords,
     regex::{self, Regex},
@@ -2534,10 +2535,10 @@ fn paste_impl(
             .unwrap(),
     );
 
-    // if any of values ends \n it's linewise paste
+    // if any of values ends with a line ending, it's linewise paste
     let linewise = values
         .iter()
-        .any(|value| value.ends_with(doc.line_ending.as_str()));
+        .any(|value| get_line_ending_of_str(value).is_some());
 
     let mut values = values.iter().cloned().map(Tendril::from).chain(repeat);
 

helix-view/src/document.rs

@@ -7,9 +7,9 @@ use std::str::FromStr;
 use std::sync::Arc;
 
 use helix_core::{
-    auto_detect_line_ending,
     chars::{char_is_line_ending, char_is_whitespace},
     history::History,
+    line_ending::auto_detect_line_ending,
     syntax::{self, LanguageConfiguration},
     ChangeSet, Diagnostic, LineEnding, Rope, Selection, State, Syntax, Transaction,
     DEFAULT_LINE_ENDING,