l3doc conflict with `ProvidesExplFile` about latex3 HOT 8 OPEN

Well yes: with \ProvidesExplFile you are auto-activing \ExplSyntaxOn. I suspect you are trying to achieve something that is non-obvious: what's the aim here?

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I wrote my own template by referring to someone else's template, then the original version had a \ProvideFile in it then in my own latex 3 template, I added the \ProvideExplFile.

The original version uses \GetFileInfo to get the version and other information.

I guess I'm not using it right?

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Moving \ProvidesExplFile behind \end{document} should work.

Also if it's a document class, you can use \ProvidesExplClass.

from latex3.

I agree that this is probably unsupported use, on the other hand doc.sty does use \obeylines in macrocode and assumes (falsely here) that that will cause line ends to be honoured.

It's almost enough just to reset endlinechar in \obeylines

\ProvidesExplFile{test.dtx}{2024/02/28}{0.1.0}{abc}
\documentclass{l3doc}
\NewCommandCopy\oldobeylines\obeylines
\renewcommand\obeylines{\endlinechar=13\relax\oldobeylines}

but there is a space coming through that I dont have time to trace this morning, so the first abcd is out of alignment

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I get errors in loading supp-pdf.mkii, both with the original example in #1478 (comment) and with \obeylines patch from @davidcarlisle.

(/usr/local/texlive/2023basic/texmf-dist/tex/context/base/mkii/supp-pdf.mkii
[LoadingMPStoPDFconverter(version2006.09.02).]
\scratchcounter=\count331
! Missing number, treated as zero.
<to be read again> 
                   \relax 
l.136 ...csname newcount\endcsname \scratchcounter

from latex3.

\ProvidesExpl... are intended for files where expl3 syntax should be on: that's not true here as it's a document. \ProvidesFile is really for config files or similar: I wouldn't use it to 'version' a document.

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@davidcarlisle You suggesting a change somewhere?

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@josephwright not necessarily, but doc or even the latex 2e kernel could make \obeylines set \endlinechar to ^^M so that lines do actually get obeyed, if we want to support that packages in general (and \ExplSyntaxOn in particular) might locally have changed \endlinechar

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