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Limit box-drawing detection to actual box chars (U+2500-U+257F)

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Block elements (█▀▄) and geometric shapes should merge normally.
Only box-drawing lines/corners/junctions need separate positioning.
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GitHub Copilot
2026-01-24 19:07:11 +00:00
parent 561101ab4b
commit bcc4fb0c6d
1 changed files with 9 additions and 5 deletions
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src/textual_webterm/svg_exporter.py
+9 -5
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@@ -256,14 +256,18 @@ class _Span(TypedDict):
def _is_box_drawing(char: str) -> bool: def _is_box_drawing(char: str) -> bool:
"""Check if character is a box-drawing or block element that needs precise positioning.""" """Check if character is a box-drawing character that needs precise positioning.
Only actual box-drawing characters (lines, corners) need separate positioning.
Block elements (█▀▄ etc.) can merge as they're often used in sequences.
"""
if not char: if not char:
return False return False
code = ord(char[0]) code = ord(char[0])
# Box Drawing: U+2500-U+257F # Box Drawing only: U+2500-U+257F (lines, corners, junctions)
# Block Elements: U+2580-U+259F # NOT block elements (U+2580-U+259F) - those can merge
# Geometric Shapes (some): U+25A0-U+25FF # NOT geometric shapes (U+25A0-U+25FF) - those can merge
return 0x2500 <= code <= 0x259F or 0x25A0 <= code <= 0x25FF return 0x2500 <= code <= 0x257F
def _should_break_span(current_text: str, new_char: str) -> bool: def _should_break_span(current_text: str, new_char: str) -> bool: