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Fixed a crash of editor when deleting multiple bytes characters in prompt #12

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Fixed a crash of editor when deleting multiple bytes characters in prompt #12

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9 changes: 8 additions & 1 deletion src/editor.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ use std::time::Duration;
use std::time::Instant;
use termion::color;
use termion::event::Key;
use unicode_segmentation::UnicodeSegmentation;

const STATUS_FG_COLOR: color::Rgb = color::Rgb(63, 63, 63);
const STATUS_BG_COLOR: color::Rgb = color::Rgb(239, 239, 239);
Expand Down Expand Up @@ -388,7 +389,13 @@ impl Editor {
self.refresh_screen()?;
let key = Terminal::read_key()?;
match key {
Key::Backspace => result.truncate(result.len().saturating_sub(1)),
Key::Backspace => {
let graphemes_cnt = result.graphemes(true).count();
result = result
.graphemes(true)
.take(graphemes_cnt.saturating_sub(1))
.collect();
}
Key::Char('\n') => break,
Key::Char(c) => {
if !c.is_control() {
Expand Down