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 <[log in to unmask]> * 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 Disclaimer The Numerical Algorithms Group Ltd is a company registered in England and Wales with company number 1249803. The registered office is: 30 St. Giles, Oxford, OX1 3LE, United Kingdom. Please see our Privacy Notice <https://www.nag.com/content/privacy-notice> for information on how we process personal data and for details of how to stop or limit communications from us. This e-mail has been scanned for all viruses and malware by Microsoft Exchange Online (EOP)