Followup-For: Bug #1064575 On Sat, 24 Feb 2024 12:33:50 +0000, I wrote: > Part of the documentation rendering process - I have not determined exactly > what yet - adds an 'alt' attribute when it does not exist, and generates a > randomized hex string to use as the value of the attribute. This causes the > resulting python-pyswarms-doc package to vary on each build.
Part of the reason for this appears to be the nbsphinx component; when it encounters HTML <img> elements, it emits reStructuredText markdown containing an alt attribute if one was found on the element, and defines an rST substitution[1] named by a UUID4-generated value converted to hexadecimal. Next question: where is that substitution name used when the ':alt:' option is not found on the image directive? [1] - https://sources.debian.org/src/nbsphinx/0.8.11%2Bds-1/src/nbsphinx.py/#L1398-L1399
