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tui buffer: Handle multi-width graphemes in set_string_anchored
We should skip zero-width graphemes and reset only long (more than
1-width) graphemes.
Connects #12036
| -rw-r--r-- | helix-tui/src/buffer.rs | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/helix-tui/src/buffer.rs b/helix-tui/src/buffer.rs index 405a0acd..bfcf35ac 100644 --- a/helix-tui/src/buffer.rs +++ b/helix-tui/src/buffer.rs @@ -349,15 +349,20 @@ impl Buffer { if start_index > end_index { break; } + let width = s.width(); + if width == 0 { + continue; + } self.content[start_index].set_symbol(s); 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(); } - start_index += s.width(); + start_index += width; } (x, y) |