[0113] 修复子表格 env_rects 与父单元格边框重叠问题#3340
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当光标位于子表格内部时，子表格的编辑辅助线（env_rects） 最外层边框会与父单元格的边框在同一位置绘制，导致线条加粗。 修复方式：在 compute_env_rects() 中检测当前处理的 table 是否为 subtable 的内部 table，若是则只绘制子表格内部单元格 边框，跳过最外层四条边（上、下、左、右），避免与父单元格 边框重叠。 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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问题
在无框表格中嵌套子表格时，当光标位于子表格内部，子表格的编辑辅助线（env_rects）最外层边框会与父单元格的边框在同一位置绘制，导致视觉上线条加粗/重叠。
修复
在
compute_env_rects()中检测当前处理的table是否为subtable的内部table，若是则只绘制子表格内部单元格边框，跳过最外层四条边（上、下、左、右），避免与父单元格边框重叠。测试
TeXmacs/tests/tmu/0113.tmu🤖 Generated with Claude Code