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don't crash in plaintext bracket match (mm) on empty file

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This commit is contained in:
Pascal Kuthe 2024-01-14 00:00:31 +01:00 committed by Blaž Hrastnik
parent 3f88a3f4e6
commit 2fb7e50b54
1 changed files with 7 additions and 1 deletions
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8
helix-core/src/match_brackets.rs
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@ -141,7 +141,7 @@ fn find_pair(
#[must_use]
pub fn find_matching_bracket_plaintext(doc: RopeSlice, cursor_pos: usize) -> Option<usize> {
// Don't do anything when the cursor is not on top of a bracket.
let bracket = doc.char(cursor_pos);
let bracket = doc.get_char(cursor_pos)?;
if !is_valid_bracket(bracket) {
return None;
}
@ -265,6 +265,12 @@ fn as_char(doc: RopeSlice, node: &Node) -> Option<(usize, char)> {
mod tests {
use super::*;
#[test]
fn find_matching_bracket_empty_file() {
let actual = find_matching_bracket_plaintext("".into(), 0);
assert_eq!(actual, None);
}
#[test]
fn test_find_matching_bracket_current_line_plaintext() {
let assert = |input: &str, pos, expected| {