On 29/07/2023 08:29, LARONDE Thierry wrote: > On Sat, Jul 29, 2023 at 08:15:19AM +0100, Joseph Wright wrote: >> On 29/07/2023 07:36, LARONDE Thierry wrote: >>> On Fri, Jul 28, 2023 at 07:53:19PM +0100, David Carlisle wrote: >>>> On 28/07/2023 18:57, LARONDE Thierry wrote: >>>> >> >>> 1) Is LaTeX expecting to be able to "\input" a file without extension? >>> For me, "\input" could only be a tex file; so the extension was >>> mandatory... >> >> No. \input is the only way to read a file 'here'. Most obviously, many users >> reserve .tex for plain TeX files and use .ltx for LaTeX sources. But to have >> systematic file naming you need different extensions, e.g. LaTeX packages >> are .sty, classes are .cls, etc., all of which are ultimately used with the >> \input primitive. > > My problem is not for a file with an extension. But for a file given > without an extension. Is "\input README" expected to work for a filename > "README", without an extension, or only with the added ".tex" extension? TeX first looks for "README.tex", and then if not found for "README". This is 'how it is'. > And from the excerpt given in another message (texmf.cnf), it seems > that it is allowed to even add a ".tex" to a file with already an > extension: "a.b.tex"???!!! Yes, correct: again, standard TeX behaviour. Joseph