[Docutils-develop] [docutils:bugs] #517 content_offset in directives inside grid/simple tables are off

[Günter M. <mi...@us...>]

Thank you for the report.
Could you attach your test-directive, so that I can experiment and try a fix?


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**[bugs:#517] content_offset in directives inside grid/simple tables are off**

**Status:** open
**Created:** Sat Dec 27, 2025 05:07 PM UTC by Felix Fontein
**Last Updated:** Sat Dec 27, 2025 05:07 PM UTC
**Owner:** nobody


When parsing a directive in a grid table or simple table, the directive's `content_offset` is off by one. (When nesting such a table in another such a table, it's off by one for every nesting level.)

For example, for the following code block directives, `content_offset` is always off from the real content line where the code block's content is in:

```rst
content_offset is off by 1:

+----------------------+
| .. code-block:: yaml |
|                      |
|    - foo             |
+----------------------+

content_offset is off by 2:

+------------------------+
|+----------------------+|
|| .. code-block:: yaml ||
||                      ||
||    - foo             ||
|+----------------------+|
+------------------------+

content_offset is off by 3:

+--------------------------+
|+------------------------+|
||+----------------------+||
||| .. code-block:: yaml |||
|||                      |||
|||    - foo             |||
||+----------------------+||
|+------------------------+|
+--------------------------+

content_offset is off by 1:

=====  =====
col 1  col 2
=====  =====
1      .. code-block:: yaml

          - foo
=====  =====

content_offset is off by 2:

=====  =====
col 1  col 2
=====  =====
1      =====  =====
       col 1  col 2
       =====  =====
       1      .. code-block:: yaml

                 - foo
       =====  =====
=====  =====
```

(I've noticed this when registering an own code block directive to find the actual location - row and column - of the code block's contents, to be able to give more precise error messages when linting.)


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