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Reset mode when changing buffers #5072

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merged 2 commits into from
Dec 11, 2022
Merged

Reset mode when changing buffers #5072

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1c399e4
Reset mode when changing buffers
the-mikedavis Dec 8, 2022
4e09497
Move normal mode entering code to Editor
the-mikedavis Dec 9, 2022
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11 changes: 8 additions & 3 deletions helix-term/src/commands.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -694,6 +694,7 @@ fn goto_buffer(editor: &mut Editor, direction: Direction) {

let id = *id;

normal_mode_impl(editor);
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Maybe it makes more sense to move this into editor.switch instead of adding this only here? I imagine the bug could appear for other commands aswell. editor.switch is called many times and it seems like a huge footgut for it to cause crahses it the editor is not in normal mode. I think this bug could already be produced by other commands if you created a custom insert mode binding for them. I can't think of a situation where this wouldn't want to be a normal mode after a switch.

This will require moving normal_mode_impl to helix-view but that should be okay since the function is fairly small.

What do you think?

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Yeah good call. I think we currently miss some steps when switching modes in Editor::focus that would be resolved by that change as well

editor.switch(id, Action::Replace);
}

Expand Down Expand Up @@ -2672,12 +2673,16 @@ fn open_above(cx: &mut Context) {
}

fn normal_mode(cx: &mut Context) {
if cx.editor.mode == Mode::Normal {
normal_mode_impl(cx.editor);
}

fn normal_mode_impl(editor: &mut Editor) {
if editor.mode == Mode::Normal {
return;
}

cx.editor.mode = Mode::Normal;
let (view, doc) = current!(cx.editor);
editor.mode = Mode::Normal;
let (view, doc) = current!(editor);

try_restore_indent(doc, view);

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3 changes: 3 additions & 0 deletions helix-view/src/editor.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1025,6 +1025,9 @@ impl Editor {
let (view, doc) = current!(self);
let view_id = view.id;

// Append any outstanding changes to history in the old document.
doc.append_changes_to_history(view);

if remove_empty_scratch {
// Copy `doc.id` into a variable before calling `self.documents.remove`, which requires a mutable
// borrow, invalidating direct access to `doc.id`.
Expand Down