[PATCH] asciidoctor: fix `synopsis` rendering

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From: Johannes Schindelin <johannes.schindelin@xxxxxx>

Since 76880f0510c (doc: git-clone: apply new documentation formatting
guidelines, 2024-03-29), the synopsis of `git clone`'s manual page is
rendered differently than before; Its parent commit did the same for
`git init`.

The result looks quite nice. When rendered with AsciiDoc, that is. When
rendered using AsciiDoctor, the result is quite unpleasant to my eye,
reading something like this:

	SYNOPSIS

	 git clone
	  [
	 --template=
	 <template-directory>]
		  [
	 -l
	 ] [
	 -s
	 ] [
	 --no-hardlinks
	 ] [
	 -q
	 ] [
	[... continuing like this ...]

Even on the Git home page, where AsciiDoctor's default stylesheet is not
used, this change results in some unpleasant rendering where not only
the font is changed for the `<code>` sections of the synopsis, but
padding and a different background color make the visual impression
quite uneven: compare https://git-scm.com/docs/git-clone/2.45.0 to
https://git-scm.com/docs/git-clone/2.44.0.

To fix this, let's apply the method recommended by AsciiDoctor in
https://docs.asciidoctor.org/asciidoctor/latest/html-backend/default-stylesheet/#customize-docinfo
to partially override AsciiDoctor's default style sheet so that the
`<code>` sections of the synopsis are no longer each rendered on their
own, individual lines.

This fixes https://github.com/git-for-windows/git/issues/5063.

Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
    asciidoctor: fix synopsis rendering
    
    This was reported in https://github.com/git-for-windows/git/issues/5063
    and has been fixed in Git for Windows already (in
    https://github.com/git-for-windows/git/pull/5064, because Git for
    Windows uses AsciiDoctor to render the HTML help pages).
    
    A related fix for https://git-scm.com/docs/ (where AsciiDoctor is used,
    too) was submitted as part of
    https://github.com/git/git-scm.com/pull/1855.
    
    This patch is based on ja/doc-markup-updates, but also applies cleanly
    to the default branch.

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1749%2Fdscho%2Ffix-synopses-rendering-with-asciidoctor-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1749/dscho/fix-synopses-rendering-with-asciidoctor-v1
Pull-Request: https://github.com/git/git/pull/1749

 Documentation/Makefile     | 1 +
 Documentation/docinfo.html | 5 +++++
 2 files changed, 6 insertions(+)
 create mode 100644 Documentation/docinfo.html

diff --git a/Documentation/Makefile b/Documentation/Makefile
index 3f2383a12c7..78e407e4bd1 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -202,6 +202,7 @@ ASCIIDOC_DOCBOOK = docbook5
 ASCIIDOC_EXTRA += -acompat-mode -atabsize=8
 ASCIIDOC_EXTRA += -I. -rasciidoctor-extensions
 ASCIIDOC_EXTRA += -alitdd='&\#x2d;&\#x2d;'
+ASCIIDOC_EXTRA += -adocinfo=shared
 ASCIIDOC_DEPS = asciidoctor-extensions.rb GIT-ASCIIDOCFLAGS
 DBLATEX_COMMON =
 XMLTO_EXTRA += --skip-validation
diff --git a/Documentation/docinfo.html b/Documentation/docinfo.html
new file mode 100644
index 00000000000..fb3560eb92b
--- /dev/null
+++ b/Documentation/docinfo.html
@@ -0,0 +1,5 @@
+<style>
+pre>code {
+   display: inline;
+}
+</style>

base-commit: 76880f0510c6be9f6385f2d43dcfcba4eca9ccbc
-- 
gitgitgadget




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