fix(omml2latex): 修复多字母标识符被拆开的问题
OMML2MML 会把 Word 里连写的多字母标识符(线段名 BC、三角形 △ABC、 角度 45° 等)拆成相邻的 <mi>/<mn> 元素,原转换器用空格 join 导致 'BC' 被渲染成 'B C'(B×C),'45°' 变成 '4 5°'。 三处修复: - mrow_visitor: 连续单字母 <mi> 拼接 - legacy_adapter: <math> 根节点多子元素时连续单字母 <mi> 拼接 - math_strategy: Unicode+字母混合内容按'LaTeX命令后跟字母才加空格'规则 join 回归验证:test_mixed.docx 130 个 OMML 公式,16 个发生变化且全部为 正确改善(线段名/角度/三角形/隐式乘法拼接),零误伤。
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@@ -141,7 +141,19 @@ class MathStrategy(Strategy):
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converted_parts.append(' ')
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else:
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converted_parts.append(char)
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return ' '.join(converted_parts)
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# Join with intelligent spacing: a LaTeX command followed by a
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# letter/digit needs a space (otherwise "\triangleA" becomes an
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# undefined command), but plain letters stay adjacent so that a
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# multi-letter identifier like "△ABC" becomes "\triangle ABC",
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# not "\triangle A B C".
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result_parts = []
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for idx, part in enumerate(converted_parts):
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result_parts.append(part)
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if idx < len(converted_parts) - 1:
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nxt = converted_parts[idx + 1]
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if part.startswith('\\') and nxt and (nxt[0].isalpha() or nxt[0].isdigit()):
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result_parts.append(' ')
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return ''.join(result_parts)
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# USER REQUIREMENT: "use the mathvariant to determine whether it's mathrm"
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# REMOVED: Chemistry detection heuristics (lines 139-162)
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