Re: [PATCH 1/3] asciidoctor-extensions.rb.in: delete existing <refmiscinfo/>

> After the recent a38edab7c8 (Makefile: generate doc versions via
> GIT-VERSION-GEN, 2024-12-06), building with Asciidoctor results in
> manpages where the headers no longer contain "Git Manual" and the
> footers no longer identify the built Git version.
> 
> Before a38edab7c8, we used to just provide a few attributes to
> Asciidoctor (and asciidoc). Commit 7a30134358 (asciidoctor-extensions:
> provide `<refmiscinfo/>`, 2019-09-16) noted that older versions of
> Asciidoctor didn't propagate those attributes into the built XML files,
> so we started injecting them ourselves from this script. With newer
> versions of Asciidoctor, we'd end up with some harmless duplication
> among the tags in the final XML.

> Post-a38edab7c8, we don't provide these attributes and Asciidoctor
> inserts empty-ish values. After our additions from 7a30134358, we get
> 
>   <refmiscinfo class="source">&#160;</refmiscinfo>
>   <refmiscinfo class="manual">&#160;</refmiscinfo>
>   <refmiscinfo class="source">2.47.1.[...]</refmiscinfo>
>   <refmiscinfo class="manual">Git Manual</refmiscinfo>
> 
> When these are handled, it appears to be first come first served,
> meaning that our additions have no effect and we regress as described in
> the first paragraph.
> 
> Remove existing "source" or "manual" <refmiscinfo/> tags before adding
> ours. I considered removing all <refmiscinfo/> to get a nice clean
> slate, instead of just those two that we want to replace to be a bit
> more precise. I opted for the latter. Maybe one day, Asciidoctor learns
> to insert something useful there which `xmlto` can pick up and make good
> use of -- let's not interfere.

> Signed-off-by: Martin Ågren <martin.agren@gmail.com>
> ---
>  Documentation/asciidoctor-extensions.rb.in | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/asciidoctor-extensions.rb.in b/Documentation/asciidoctor-extensions.rb.in
> index c4c200dace..d8d06f9a57 100644
> --- a/Documentation/asciidoctor-extensions.rb.in
> +++ b/Documentation/asciidoctor-extensions.rb.in
> @@ -29,6 +29,8 @@ module Git
>      class DocumentPostProcessor < Asciidoctor::Extensions::Postprocessor
>        def process document, output
>          if document.basebackend? 'docbook'
> +          output = output.sub(/<refmiscinfo class="source">.*?<\/refmiscinfo>/, "")
> +          output = output.sub(/<refmiscinfo class="manual">.*?<\/refmiscinfo>/, "")
>            new_tags = "" \
>              "<refmiscinfo class=\"source\">@GIT_VERSION@</refmiscinfo>\n" \
>              "<refmiscinfo class=\"manual\">Git Manual</refmiscinfo>\n"