vim: Further improve ~ handling

Conrad Irwin created

Now works with Visual{line} mode, collapses selections like nvim,
and doesn't fall off the end of the line.

Change summary

crates/vim/src/normal/case.rs              | 96 +++++++++++++++++-------
crates/vim/src/test/neovim_connection.rs   | 16 +++
crates/vim/test_data/test_change_case.json | 18 ++++
3 files changed, 99 insertions(+), 31 deletions(-)

Detailed changes

crates/vim/src/normal/case.rs 🔗

@@ -1,29 +1,51 @@
+use editor::scroll::autoscroll::Autoscroll;
 use gpui::ViewContext;
-use language::Point;
+use language::{Bias, Point};
 use workspace::Workspace;
 
-use crate::{motion::Motion, normal::ChangeCase, Vim};
+use crate::{normal::ChangeCase, state::Mode, Vim};
 
 pub fn change_case(_: &mut Workspace, _: &ChangeCase, cx: &mut ViewContext<Workspace>) {
     Vim::update(cx, |vim, cx| {
-        let count = vim.pop_number_operator(cx);
+        let count = vim.pop_number_operator(cx).unwrap_or(1) as u32;
         vim.update_active_editor(cx, |editor, cx| {
-            editor.set_clip_at_line_ends(false, cx);
-            editor.transact(cx, |editor, cx| {
-                editor.change_selections(None, cx, |s| {
-                    s.move_with(|map, selection| {
-                        if selection.start == selection.end {
-                            Motion::Right.expand_selection(map, selection, count, true);
+            let mut ranges = Vec::new();
+            let mut cursor_positions = Vec::new();
+            let snapshot = editor.buffer().read(cx).snapshot(cx);
+            for selection in editor.selections.all::<Point>(cx) {
+                match vim.state.mode {
+                    Mode::Visual { line: true } => {
+                        let start = Point::new(selection.start.row, 0);
+                        let end =
+                            Point::new(selection.end.row, snapshot.line_len(selection.end.row));
+                        ranges.push(start..end);
+                        cursor_positions.push(start..start);
+                    }
+                    Mode::Visual { line: false } => {
+                        ranges.push(selection.start..selection.end);
+                        cursor_positions.push(selection.start..selection.start);
+                    }
+                    Mode::Insert | Mode::Normal => {
+                        let start = selection.start;
+                        let mut end = start;
+                        for _ in 0..count {
+                            end = snapshot.clip_point(end + Point::new(0, 1), Bias::Right);
                         }
-                    })
-                });
-                let selections = editor.selections.all::<Point>(cx);
-                for selection in selections.into_iter().rev() {
+                        ranges.push(start..end);
+
+                        if end.column == snapshot.line_len(end.row) {
+                            end = snapshot.clip_point(end - Point::new(0, 1), Bias::Left);
+                        }
+                        cursor_positions.push(end..end)
+                    }
+                }
+            }
+            editor.transact(cx, |editor, cx| {
+                for range in ranges.into_iter().rev() {
                     let snapshot = editor.buffer().read(cx).snapshot(cx);
                     editor.buffer().update(cx, |buffer, cx| {
-                        let range = selection.start..selection.end;
                         let text = snapshot
-                            .text_for_range(selection.start..selection.end)
+                            .text_for_range(range.start..range.end)
                             .flat_map(|s| s.chars())
                             .flat_map(|c| {
                                 if c.is_lowercase() {
@@ -37,28 +59,46 @@ pub fn change_case(_: &mut Workspace, _: &ChangeCase, cx: &mut ViewContext<Works
                         buffer.edit([(range, text)], None, cx)
                     })
                 }
+                editor.change_selections(Some(Autoscroll::fit()), cx, |s| {
+                    s.select_ranges(cursor_positions)
+                })
             });
-            editor.set_clip_at_line_ends(true, cx);
         });
+        vim.switch_mode(Mode::Normal, true, cx)
     })
 }
-
 #[cfg(test)]
 mod test {
-    use crate::{state::Mode, test::VimTestContext};
-    use indoc::indoc;
+    use crate::{state::Mode, test::NeovimBackedTestContext};
 
     #[gpui::test]
     async fn test_change_case(cx: &mut gpui::TestAppContext) {
-        let mut cx = VimTestContext::new(cx, true).await;
-        cx.set_state(indoc! {"ˇabC\n"}, Mode::Normal);
-        cx.simulate_keystrokes(["~"]);
-        cx.assert_editor_state("AˇbC\n");
-        cx.simulate_keystrokes(["2", "~"]);
-        cx.assert_editor_state("ABcˇ\n");
+        let mut cx = NeovimBackedTestContext::new(cx).await;
+        cx.set_shared_state("ˇabC\n").await;
+        cx.simulate_shared_keystrokes(["~"]).await;
+        cx.assert_shared_state("AˇbC\n").await;
+        cx.simulate_shared_keystrokes(["2", "~"]).await;
+        cx.assert_shared_state("ABˇc\n").await;
+
+        // works in visual mode
+        cx.set_shared_state("a😀C«dÉ1*fˇ»\n").await;
+        cx.simulate_shared_keystrokes(["~"]).await;
+        cx.assert_shared_state("a😀CˇDé1*F\n").await;
+
+        // works with multibyte characters
+        cx.simulate_shared_keystrokes(["~"]).await;
+        cx.set_shared_state("aˇC😀é1*F\n").await;
+        cx.simulate_shared_keystrokes(["4", "~"]).await;
+        cx.assert_shared_state("ac😀É1ˇ*F\n").await;
+
+        // works with line selections
+        cx.set_shared_state("abˇC\n").await;
+        cx.simulate_shared_keystrokes(["shift-v", "~"]).await;
+        cx.assert_shared_state("ˇABc\n").await;
 
-        cx.set_state(indoc! {"a😀C«dÉ1*fˇ»\n"}, Mode::Normal);
-        cx.simulate_keystrokes(["~"]);
-        cx.assert_editor_state("a😀CDé1*Fˇ\n");
+        // works with multiple cursors (zed only)
+        cx.set_state("aˇßcdˇe\n", Mode::Normal);
+        cx.simulate_keystroke("~");
+        cx.assert_state("aSSˇcdˇE\n", Mode::Normal);
     }
 }

crates/vim/src/test/neovim_connection.rs 🔗

@@ -171,15 +171,25 @@ impl NeovimConnection {
             .await
             .expect("Could not get neovim window");
 
-        if !selection.is_empty() {
-            panic!("Setting neovim state with non empty selection not yet supported");
-        }
         let cursor = selection.start;
         nvim_window
             .set_cursor((cursor.row as i64 + 1, cursor.column as i64))
             .await
             .expect("Could not set nvim cursor position");
 
+        if !selection.is_empty() {
+            self.nvim
+                .input("v")
+                .await
+                .expect("could not enter visual mode");
+
+            let cursor = selection.end;
+            nvim_window
+                .set_cursor((cursor.row as i64 + 1, cursor.column as i64))
+                .await
+                .expect("Could not set nvim cursor position");
+        }
+
         if let Some(NeovimData::Get { mode, state }) = self.data.back() {
             if *mode == Some(Mode::Normal) && *state == marked_text {
                 return;

crates/vim/test_data/test_change_case.json 🔗

@@ -0,0 +1,18 @@
+{"Put":{"state":"ˇabC\n"}}
+{"Key":"~"}
+{"Get":{"state":"AˇbC\n","mode":"Normal"}}
+{"Key":"2"}
+{"Key":"~"}
+{"Get":{"state":"ABˇc\n","mode":"Normal"}}
+{"Put":{"state":"a😀C«dÉ1*fˇ»\n"}}
+{"Key":"~"}
+{"Get":{"state":"a😀CˇDé1*F\n","mode":"Normal"}}
+{"Key":"~"}
+{"Put":{"state":"aˇC😀é1*F\n"}}
+{"Key":"4"}
+{"Key":"~"}
+{"Get":{"state":"ac😀É1ˇ*F\n","mode":"Normal"}}
+{"Put":{"state":"abˇC\n"}}
+{"Key":"shift-v"}
+{"Key":"~"}
+{"Get":{"state":"ˇABc\n","mode":"Normal"}}