Hi Jon, Heh, with all those scripts and hacks that were accumulated with time for docs makefile, placing them there with absolutely no documentation, I ended missing scripts/check-variable-fonts.sh. I only realized today when searching for the "|| exit" hack we added in 2017 to fix an issue where make pdfdocs were always returning errors (again, not documented). This series comes after(*): https://lore.kernel.org/linux-doc/cover.1757677427.git.mchehab+huawei@xxxxxxxxxx/T/#t (*) I should probably have named such series as: "Move the trick-or-treat build hacks accumulated over time into a single place and document them." This specific script is called only when PDF build fails. Re-add it at sphinx-build-wrapper logic. After it, problematic PDF builds will warn again about possible issues with CJK variable fonts: $ make SPHINXDIRS=translations pdfdocs Summary ======= translations: FAILED ============================================================================= XeTeX is confused by "variable font" files listed below: /usr/share/fonts/google-noto-sans-cjk-vf-fonts/NotoSansCJK-VF.ttc /usr/share/fonts/google-noto-sans-mono-cjk-vf-fonts/NotoSansMonoCJK-VF.ttc /usr/share/fonts/google-noto-serif-cjk-vf-fonts/NotoSerifCJK-VF.ttc For CJK pages in PDF, they need to be hidden from XeTeX by denylisting. Or, CJK pages can be skipped by uninstalling texlive-xecjk. For more info on denylisting, other options, and variable font, see header comments of tools/docs/lib/latex_fonts.py. ============================================================================= PDF build failed: not all PDF files were created. make[2]: *** [Documentation/Makefile:58: pdfdocs] Error 1 make[1]: *** [/new_devel/docs/Makefile:1806: pdfdocs] Error 2 make: *** [Makefile:248: __sub-make] Error 2 The output message is identical, except that it now uses __file__ to get the actual location of the verify code (which is now part of a docs lib). All comments from the original code were preserved, but I opted to use python docstring to store it. This way, we may even add something like print(__doc__) in the future, if needed. I also opted to preserve a command-line interface, which does nothing but call the check function: $ ./tools/docs/check-variable-fonts.py ============================================================================= XeTeX is confused by "variable font" files listed below: /usr/share/fonts/google-noto-sans-cjk-vf-fonts/NotoSansCJK-VF.ttc /usr/share/fonts/google-noto-sans-mono-cjk-vf-fonts/NotoSansMonoCJK-VF.ttc /usr/share/fonts/google-noto-serif-cjk-vf-fonts/NotoSerifCJK-VF.ttc For CJK pages in PDF, they need to be hidden from XeTeX by denylisting. Or, CJK pages can be skipped by uninstalling texlive-xecjk. For more info on denylisting, other options, and variable font, see header comments of tools/docs/lib/latex_fonts.py. ============================================================================= I opted to place it into a class, as we can one day add more functions there, for instance to create the proposed XML file under ~/deny-vc, as the script's documentation proposes. By using a class, we only need to import the class: all functions from such class are automatically imported altogether. Plus, we don't have to deal with namespaces for a function called "check()". Mauro Carvalho Chehab (3): scripts/check-variable-fonts.sh: convert to Python scripts: check-variable-fonts.py: split into a lib and an exec file tools/docs: sphinx-build-wrapper: warn about broken PDF fonts MAINTAINERS | 1 - scripts/check-variable-fonts.sh | 115 -------------------- tools/docs/check-variable-fonts.py | 23 ++++ tools/docs/lib/latex_fonts.py | 162 +++++++++++++++++++++++++++++ tools/docs/sphinx-build-wrapper | 9 +- 5 files changed, 192 insertions(+), 118 deletions(-) delete mode 100755 scripts/check-variable-fonts.sh create mode 100755 tools/docs/check-variable-fonts.py create mode 100755 tools/docs/lib/latex_fonts.py -- 2.50.1