On 28/07/2023 16:14, LARONDE Thierry wrote: > On Fri, Jul 28, 2023 at 03:58:49PM +0100, Joseph Wright wrote: >> On 28/07/2023 15:28, Thierry wrote: >>> Yes. But the same engine does things differently between LaTeX >>> 2022-11-01 and LaTeX 2023-06-01. >>> >>> So could someone give me the diff of the input related things in >>> LaTeX between these two versions so that I can have a clue about >>> what LaTeX is expecting and what it is eventually calling (because it >>> could be calling, low level, the open routine, and there is no >>> acrobatics made in the open routine in kerTeX: the handling is made >>> before calling the routine; so if LaTeX is calling low level like >>> this, the result is not a surprise). >> Older LaTeX used \openin + \ifeof to test for file existence; we now use >> \(pdf)filesize, which is expandable and reports "0" for a non-existent file. >> Both methods should find "foo.tex" from "foo" in the same way. >> > Uh! You expect \filesize to do searching and file extension? Why? > \filesize can be called with whatever file, not necessarily a .tex. > Why would it assume it has to try an extension if it is not found? > > Where was this specified for the primitive? The primitive has always acted that way (since being added by pdftex) it's not a latex feature. If \input{xxx} inputs a file, \(pdf)filesize{xxx} should refer to the same file, so the primitive has always used the same file searching. 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)