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Slice the before_window at char boundaries (#4028)

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Co-authored-by: Laurenz <laurmaedje@gmail.com>
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Myriad-Dreamin 2024-05-06 22:00:51 +08:00 committed by Laurenz
parent a4522b0fe8
commit 03e3f01d54
1 changed files with 9 additions and 1 deletions
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10
crates/typst-ide/src/complete.rs
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@ -1053,7 +1053,7 @@ impl<'a> CompletionContext<'a> {
/// A small window of context before the cursor.
fn before_window(&self, size: usize) -> &str {
&self.before[self.cursor.saturating_sub(size)..]
Scanner::new(self.before).from(self.cursor.saturating_sub(size))
}
/// Add a prefix and suffix to all applications.
@ -1433,4 +1433,12 @@ mod tests {
test("#i", 2, &["int", "if conditional"], &["foo"]);
test("#().", 4, &["insert", "remove", "len", "all"], &["foo"]);
}
#[test]
fn test_before_window_char_boundary() {
// Check that the `before_window` doesn't slice into invalid byte
// boundaries.
let s = "😀😀 #text(font: \"\")";
test(s, s.len() - 2, &[], &[]);
}
}