docling-project/docling

Markdown serialization of headings in rich table cells

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#2,722 创建于 2025年12月4日

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 (3 评论) (0 反应) (1 负责人)Python (59,751 star) (4,140 fork)batch import
buggood first issuemarkdown

描述

Bug

In docling-core, the MarkdownTableSerializer transforms DoclingDocument headings and titles into markdown headings (i.e., text with preceding # symbols). According to the markdown specs, you can’t use headings, blockquotes, lists, horizontal rules, images, or most HTML tags when formatting text within tables and most applications will not render those headings properly.

Steps to reproduce

Convert Docling's test file table_with_heading_02.html to markdown or check its ground truth file table_with_heading_02.html.md

Docling version

Docling version: 2.64.0 Docling Core version: 2.51.1 Docling IBM Models version: 3.10.2 Docling Parse version: 4.7.1 Python: cpython-313 (3.13.5) Platform: macOS-14.7.1-arm64-arm-64bit-Mach-O

Python version

Python 3.13.5

贡献者指南

技术栈
python
领域
backenddata
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
2
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
blocked
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
PythonMarkdown
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
30
研究方向
The bug is in `docling core/transforms/serializer/markdown.py` where headings are serialized as `#` prefixed lines even within table cells, violating markdown specs. The issue is assigned and has recent comments; check if the assignee has a branch or plan. The fix likely involves detecting table context and replacing heading markup with plain text or bold inside tables. Reference the markdown spec link provided and the ground truth file to verify correct output.
Markdown serialization of headings in rich table cells · docling-project/docling#2722 | Good First Issue