Re: [PATCH] asciidoctor-extensions: provide `<refmiscinfo/>`

>
> Hi Martin,
>
> Martin Ågren wrote:
> > That is, we miss out on the `<refmiscinfo/>` tags. As a result, the
> > header of each man page doesn't say "Git Manual", but "git-foo(1)"
> > instead. Worse, the footers don't give the Git version number and
> > instead provide the fairly ugly "[FIXME: source]".
> >
> > That Asciidoctor ignores asciidoc.conf is nothing new. This is why we
> > implement the `linkgit:` macro in asciidoc.conf *and* in
> > asciidoctor-extensions.rb. Follow suit and provide these tags in
> > asciidoctor-extensions.rb, using a "postprocessor" extension.
>
> > We may consider a few alternatives:
> >
> >   * Provide the `mansource` attribute to Asciidoctor. This attribute
> >     looks promising until one realizes that it can only be given inside
> >     the source file (the .txt file in our case), *not* on the command
> >     line using `-a mansource=foobar`. I toyed with the idea of injecting
> >     this attribute while feeding Asciidoctor the input on stdin, but it
> >     didn't feel like it was worth the complexity in the Makefile.
>
> I played with this direction before.  Using Asciidoctor we
> can convert directly from .txt to man without docbook
> and xmlto.  That does have some other issues which need to
> be worked out though.  Here's what I had as a start:
>
> -- 8< --
> Subject: [PATCH] WIP: doc: improve asciidoctor manpage generation
>
> Avoid 'FIXME: Source' by setting mansource.  Skip xmlto step and render
> manpages directly with asciidoctor.
>
> TODO:
>     - apply to all man pages
>     - fix links to html docs, like user-manual.html in git.1 (currently
>       it is listed in brackets inline rather than as a footnote)
>
> Reference:
> https://lore.kernel.org/lkml/20180424150456.17353-1-tiwai@suse.de/
> Signed-off-by: Todd Zullinger <tmz@pobox.com>
> ---
>  Documentation/Makefile                  | 8 ++++++++
>  Documentation/asciidoctor-extensions.rb | 2 ++
>  2 files changed, 10 insertions(+)
>
> diff --git a/Documentation/Makefile b/Documentation/Makefile
> index a9697f5146..494f8c9464 100644
> --- a/Documentation/Makefile
> +++ b/Documentation/Makefile
> @@ -197,6 +197,7 @@ ASCIIDOC_DOCBOOK = docbook45
>  ASCIIDOC_EXTRA += -acompat-mode -atabsize=8
>  ASCIIDOC_EXTRA += -I. -rasciidoctor-extensions
>  ASCIIDOC_EXTRA += -alitdd='&\#x2d;&\#x2d;'
> +ASCIIDOC_EXTRA += -a mansource="Git $(GIT_VERSION)" -a manmanual="Git Manual"
>  DBLATEX_COMMON =
>  endif
>
> @@ -354,9 +355,16 @@ $(OBSOLETE_HTML): %.html : %.txto asciidoc.conf
>  manpage-base-url.xsl: manpage-base-url.xsl.in
>         $(QUIET_GEN)sed "s|@@MAN_BASE_URL@@|$(MAN_BASE_URL)|" $< > $@
>
> +ifndef USE_ASCIIDOCTOR
>  %.1 %.5 %.7 : %.xml manpage-base-url.xsl $(wildcard manpage*.xsl)
>         $(QUIET_XMLTO)$(RM) $@ && \
>         $(XMLTO) -m $(MANPAGE_XSL) $(XMLTO_EXTRA) man $<
> +else
> +%.1 %.5 %.7 : %.txt
> +       $(QUIET_ASCIIDOC)$(RM) $@+ $@ && \
> +       $(ASCIIDOC_COMMON) -b manpage -d manpage -o $@+ $< && \
> +       mv $@+ $@
> +endif
>
>  %.xml : %.txt asciidoc.conf asciidoctor-extensions.rb
>         $(QUIET_ASCIIDOC)$(RM) $@+ $@ && \
> diff --git a/Documentation/asciidoctor-extensions.rb b/Documentation/asciidoctor-extensions.rb
> index f7a5982f8b..ebb078807a 100644
> --- a/Documentation/asciidoctor-extensions.rb
> +++ b/Documentation/asciidoctor-extensions.rb
> @@ -12,6 +12,8 @@ module Git
>          if parent.document.basebackend? 'html'
>            prefix = parent.document.attr('git-relative-html-prefix')
>            %(<a href="#{prefix}#{target}.html">#{target}(#{attrs[1]})</a>\n)
> +        elsif parent.document.basebackend? 'manpage'
> +          "#{target}(#{attrs[1]})"
>          elsif parent.document.basebackend? 'docbook'
>            "<citerefentry>\n" \
>              "<refentrytitle>#{target}</refentrytitle>" \
> -- 8< --
>
> That was based on ma/asciidoctor-extensions, but it may be
> missing other recent improvements you've made to the make
> targets.  It's been a month or so since I worked on it.
>
> I munged up doc-diff to set MANDWIDTH=1000 and set one
> branch to default to asciidoctor to compare.  (Your other
> recent series looks like it'll make doing asciidoc and
> asciidoctor comparisons easier.)
>
> There were a number of differences that I didn't work
> through though.  Most importantly was the change in the
> links noted in the commit message.