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On 28/07/2023 15:28, LARONDE Thierry wrote:
> Yes. But the same engine does things differently between LaTeX
> 2022-11-01 and LaTeX 2023-06-01.

What difference are you  seeing?  If I try 2022-11-01 it acts the same
way as the current (and older) versions


  echo '\input{docstrip}' | /usr/local/texlive/2022/bin/*/latex

This is pdfTeX, Version 3.141592653-2.6-1.40.24 (TeX Live 2022)
(preloaded format=latex)
  restricted \write18 enabled.
**entering extended mode
LaTeX2e <2022-11-01> patch level 1
L3 programming layer <2023-02-07>
(/usr/local/texlive/2022/texmf-dist/tex/latex/base/docstrip.tex


that is: \input{docstrip} finds docstrip.tex in the path.


The only related change log (changes.txt in the latex2e/base repository)
I see for input since 2022-11-01 is


2023-06-16  Joseph Wright <Joseph.Wright@latex-project.org>

     * ltfiles.dtx
     Allow for pipes in \input, etc.


which is the change in ltfiles.dtx marked with


% \changes{v1.2u}{2023/06/16}{Support piped input}


David


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