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Handle inserting multiple tabs on the same row

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This also fixes a panic when tabbing on a row that contained multi-byte
characters.
This commit is contained in:
Antonio Scandurra 2022-07-16 08:40:44 +02:00
parent 92bc1a6eef
commit af917de684
1 changed files with 38 additions and 12 deletions
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50
crates/editor/src/editor.rs
View file

@ -2909,9 +2909,17 @@ impl Editor {
if selections.iter().all(|s| s.is_empty()) {
self.transact(cx, |this, cx| {
this.buffer.update(cx, |buffer, cx| {
let mut prev_cursor_row = 0;
let mut row_delta = 0;
for selection in &mut selections {
let language_name =
buffer.language_at(selection.start, cx).map(|l| l.name());
let mut cursor = selection.start;
if cursor.row != prev_cursor_row {
row_delta = 0;
prev_cursor_row = cursor.row;
}
cursor.column += row_delta;
let language_name = buffer.language_at(cursor, cx).map(|l| l.name());
let settings = cx.global::<Settings>();
let tab_size = if settings.hard_tabs(language_name.as_deref()) {
IndentSize::tab()
@ -2919,21 +2927,18 @@ impl Editor {
let tab_size = settings.tab_size(language_name.as_deref()).get();
let char_column = buffer
.read(cx)
.text_for_range(Point::new(selection.start.row, 0)..selection.start)
.text_for_range(Point::new(cursor.row, 0)..cursor)
.flat_map(str::chars)
.count();
let chars_to_next_tab_stop = tab_size - (char_column as u32 % tab_size);
IndentSize::spaces(chars_to_next_tab_stop)
};
buffer.edit(
[(
selection.start..selection.start,
tab_size.chars().collect::<String>(),
)],
cx,
);
selection.start.column += tab_size.len;
selection.end = selection.start;
buffer.edit([(cursor..cursor, tab_size.chars().collect::<String>())], cx);
cursor.column += tab_size.len;
selection.start = cursor;
selection.end = cursor;
row_delta += tab_size.len;
}
});
this.change_selections(Some(Autoscroll::Fit), cx, |s| {
@ -7566,6 +7571,27 @@ mod tests {
});
}
#[gpui::test]
async fn test_tab(cx: &mut gpui::TestAppContext) {
let mut cx = EditorTestContext::new(cx).await;
cx.update(|cx| {
cx.update_global::<Settings, _, _>(|settings, _| {
settings.editor_overrides.tab_size = Some(NonZeroU32::new(3).unwrap());
});
});
cx.set_state(indoc! {"
|ab|c
|🏀|🏀|efg
d|
"});
cx.update_editor(|e, cx| e.tab(&Tab, cx));
cx.assert_editor_state(indoc! {"
|ab |c
|🏀 |🏀 |efg
d |
"});
}
#[gpui::test]
async fn test_indent_outdent(cx: &mut gpui::TestAppContext) {
let mut cx = EditorTestContext::new(cx).await;