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TextEdit: fix crash when hitting SHIFT + TAB around non-ASCII text (#3984) 

* Closes #3846 
* Closes #3878

Dear emilk.

Leaving aside other function,
I think this is all you need to fix to patch the panic that occurs when
Shift + TAB.

Thank you, emilk.
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rustbasic 2024-03-12 19:21:33 +09:00 committed by GitHub
parent c87bcc4bcc
commit f019032033
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1 changed files with 4 additions and 2 deletions
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6
crates/egui/src/widgets/text_edit/text_buffer.rs
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@ -89,10 +89,12 @@ pub trait TextBuffer {
fn decrease_indentation(&mut self, ccursor: &mut CCursor) {
let line_start = find_line_start(self.as_str(), *ccursor);
let remove_len = if self.as_str()[line_start.index..].starts_with('\t') {
let remove_len = if self.as_str().chars().nth(line_start.index) == Some('\t') {
Some(1)
} else if self.as_str()[line_start.index..]
} else if self
.as_str()
.chars()
.skip(line_start.index)
.take(TAB_SIZE)
.all(|c| c == ' ')
{