[Dev-luatex] Re: Change in log indentation for luatex 1.21 (texlive 2025 pretest)

On Wed, 12 Feb 2025 at 20:55, luigi scarso wrote:

On Wed, 12 Feb 2025 at 20:27, David Carlisle wrote:

...

The new luatex shows differences in the way it indents and abbreviates log error lines.

This is "only" logging but breaks several tests in the latex test suite which is essentially a regression test based around diff-ing normalised logs.

If the change is intentional we can update the reference results (and maintainers of other packages using l3build tests will have to do similar) but if this change might be reverted we will hold off updating the test suite.

Attached is a small test file and the tl2024 and tl2025 log.

The diff is

$ diff 24.log 25.log 1c1 < This is LuaTeX, Version 1.18.0 (TeX Live 2024) (format=luatex 2025.1.30) 12 FEB 2025 19:16 ---

...

This is LuaTeX, Version 1.21.0 (TeX Live 2025) (format=luatex 2025.2.12) 12 FEB 2025 19:16 7c7 < x}

---

...

x}

10c10 < l.5 ...elax\relax\relax\relax\relax\relax\show\relax ---

...

l.5 ...ax\relax\relax\relax\relax\relax\show\relax

I think it's related to

I think it's related to [luatex] A bug in show_context second line indentation from last December 30th, I thought the logs were ok having not seen any replies. *The fix seems to be consistent with the web source of pdftex;*

Ah Luigi, sorry you are right. The change showed up in the regression test because we had saved luatex results which changed. However you are correct that the new texlive 2025 log is consistent with pdftex log so the change looks good and we will have to update the test suite to match the corrected behaviour. Sorry for the noise.

I can revert, but then I have to fix the bug again after the TL release.

It seems like no revert is necessary.

-- luigi

David