Bug#1138817: Remove pointless caNv tags

Md Ayquassar <[email protected]> Thu, 4 Jun 2026 08:17:27 +0200
Newsgroups gmane.linux.debian.devel.tetex
Message-ID <59c9ff74-0f8c-4e43-8112-fcf113d817ee__35190.9591279522$1780553967$gmane$org@ro.ru>
Package: texlive-latex-extra-doc
Version: 2024.20250309-2

For an unadvertised reason, /usr/share/doc/texlive-doc/latex/webquiz/examples/*.png and /usr/share/doc/texlive-doc/latex/beautybook/inner_pics/titleimages/songeven.png have caNv chunks. This chunk is not standard and creates issues down certain tool chains; cf. http://bugs.debian.org/1115346. The documentations opened by `texdoc webquiz` and `texdoc beautybook` keep silent about this tag. If this tag is really necessary, document why; otherwise, remove it from the offending PNG files (`pngcrush -brute -ow -rem caNv file.png`).