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tui buffer: Handle multi-width graphemes in set_string_anchored

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We should skip zero-width graphemes and reset only long (more than
1-width) graphemes.

Connects #12036
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Michael Davis 2025-01-23 18:12:15 -05:00
parent 9d6ea773e9
commit 0b9701e899
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1 changed files with 7 additions and 2 deletions
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9
helix-tui/src/buffer.rs
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@ -349,15 +349,20 @@ impl Buffer {
if start_index > end_index { if start_index > end_index {
break; break;
} }
let width = s.width();
if width == 0 {
continue;
}
self.content[start_index].set_symbol(s); self.content[start_index].set_symbol(s);
self.content[start_index].set_style(style(byte_offset)); self.content[start_index].set_style(style(byte_offset));
for i in start_index + 1..end_index { // Reset following cells if multi-width (they would be hidden by the grapheme):
for i in start_index + 1..start_index + width {
self.content[i].reset(); self.content[i].reset();
} }
start_index += s.width(); start_index += width;
} }
(x, y) (x, y)