[0605] 修复 stack 结构的 LaTeX 导出为 \substack#3342
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JackYansongLi
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- Implement tmtex-stack in tmtex.scm to export stack as \substack{... \\ ...}
- Register stack handler in tmtex-extra-methods% dispatch table
- Auto-add mathtools package dependency
- Add integration test 0605.scm with expected LaTeX output
- xmake run 0605 passes
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[0605] 修复 stack 结构的 LaTeX 导出为 \substack
相关文档
任务相关的代码文件
TeXmacs/progs/convert/latex/tmtex.scmTeXmacs/plugins/latex/progs/convert/latex/tmtex.scmTeXmacs/tests/0605.scmTeXmacs/tests/tex/0605_stack_export.texTeXmacs/tests/tmu/0605.tmu如何测试
确定性测试（单元测试）
非确定性测试（文档验证）
TeXmacs/tests/tmu/0605.tmu。\substack{... \\ ...}。如何提交
提交前执行以下最少步骤：
What
修复 stack 结构在导出 LaTeX 时错误地使用
array环境的问题，改为正确导出为\substack{... \\ ...}格式。tmtex.scm中新增tmtex-stack函数，将 stack 的表格内容转换为\substack参数格式tmtex-extra-methods%分发表中注册stack的处理函数mathtools包依赖（\substack需要此包）0605.scm和对应的预期输出文件Why
\substack是 LaTeX 中表示多行下标/上标的标准命令（由mathtools/amsmath提供），语义上与 TeXmacs 的 stack 结构完全对应。之前导出为array环境会导致：array嵌套有兼容性问题How
实现思路：
tmtex-table的实现，利用tmtable-parser解析 stack 的表格结构tmtex递归转换每个单元格\\\\（即 LaTeX 的\\）作为行分隔符连接各行(tex-apply 'substack ...)生成最终的 LaTeX AST 节点(latex-add-extra "mathtools")确保导出的 LaTeX 文档包含所需的宏包