Using links to other chapters in the tablecaption does not working in PDFs

[Mauntenbeiker]

Describe the bug

When I use a link in the tablecaption to another chapter in the document, the link doesn't work in the PDF. In the *.tex file the caption looks like this: \sphinxcaption{To find the tablecaption see Title}\label{\detokenize{index:id2}}

When I change it to this: \sphinxcaption{To find the tablecaption see \hyperref[\detokenize{index:title}]{\sphinxcrossref{\DUrole{std,std-ref}{Title}}}}\label{\detokenize{index:id2}} the link is working.

How to Reproduce

For index.rst and conf.py see: tablecaption.zip

Environment Information

Platform:              win32; (Windows-10-10.0.19045-SP0)
Python version:        3.11.6 (tags/v3.11.6:8b6ee5b, Oct  2 2023, 14:57:12) [MSC v.1935 64 bit (AMD64)])
Python implementation: CPython
Sphinx version:        7.2.6
Docutils version:      0.18.1
Jinja2 version:        3.1.2
Pygments version:      2.16.1

Sphinx extensions

No response

Additional context

No response

[jfbu]

This originates in latex.py code which deliberately prevents the internal reference in the title caption to be properly treated, see the two if not self.in_title

https://github.com/sphinx-doc/sphinx/blob/e976059fd6ab49b1c2784445d7095c9287897724/sphinx/writers/latex.py#L1738-L1762

I don't know (at this time) the rationale for this exclusion

[jfbu]

could be that the in_title flag is too generic. Immediate fix would be to add a in_table_title and allow handling of internal (and external?) uri's then in above displayed code, while checking in_table_title

better would be to understand exactly where the processing of internal (or external?) references needs to be prevented and document why; at this stage I don't know. Will tag this as "help wanted".

[picnixz]

I'm not sure I'll have time for that until I resolve #11285 so I'll also add an "expert" tag because it requires someone quite familar with the internal flow.