[Bug cli/30966] [gdb/cli] pygments finds language based on file name, source-highlight finds language based on debug info

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=30966

--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #1)
> (In reply to Tom de Vries from comment #0)
> > Conversely, if gdb can't decide what parser to use for source-highlight, it
> > gives up (and falls back to pygments), even though source-highlight might be
> > able to figure out which parser to use based on the file extension.
> 
> See https://www.gnu.org/software/src-highlite/source-highlight-lib.html
> which shows the example ./lib/examples/source-highlight-console-main.cpp
> with this bit:
> ...
>              // we have a file name so we detect the input source language
>              srchilite::LangMap langMap(DATADIR, "lang.map");
>              string lang = langMap.getMappedFileNameFromFileName(argv[1]);
>              if (lang != "") {
>                  inputLang = lang;
> ...

https://sourceware.org/pipermail/gdb-patches/2023-October/203387.html

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