New manpage format

[jnavila]

Changes

This PR changes the way the asciidoc source of manpage is processed, by adding the "synopsis" paragraph style and reworking the backtick format.

Context

The style change has been pushed to master and will be applied to git-clone and git-init in the next version.

[dscho]

I just triggered a pair of workflow runs to update the manual pages and to update the translated manual pages, fetched the result and rendered it locally. Here are two examples:

language	before	after
English
French

Personally, I cannot spot any difference, apart from the version number (because this here PR branch is based on v2.46.2 while the updated manual pages include v2.47.0) and the incorrect =<regexp> on the "before" side of the French version (fixed on the "after" side).

Even looking at the HTML of the synopses (taking the French version, so that there is a known difference), I only see this:

diff --git a/before b/after
index 1a87d1348..6185fb72b 100644
--- a/before
+++ b/after
@@ -1,5 +1,5 @@
 <pre class="content"><em>git config list</em> [&lt;option-de-fichier&gt;] [&lt;option-d-affichage&gt;] [--includes]
-<em>git config get</em> [&lt;option-de-fichier&gt;] [&lt;option-d-affichage&gt;] [--includes] [--all] [--regexp=&lt;regexp&gt;] [--value=&lt;valeur&gt;] [--fixed-value] [--default=&lt;default&gt;] &lt;nom&gt;
+<em>git config get</em> [&lt;option-de-fichier&gt;] [&lt;option-d-affichage&gt;] [--includes] [--all] [--regexp] [--value=&lt;valeur&gt;] [--fixed-value] [--default=&lt;default&gt;] &lt;nom&gt;
 <em>git config set</em> [&lt;option-de-fichier&gt;] [--type=&lt;type&gt;] [--all] [--value=&lt;valeur&gt;] [--fixed-value] &lt;nom&gt; &lt;valeur&gt;
 <em>git config unset</em> [&lt;option-de-fichier&gt;] [--all] [--value=&lt;valeur&gt;] [--fixed-value] &lt;nom&gt; &lt;valeur&gt;
 <em>git config rename-section</em> [&lt;option-de-fichier&gt;] &lt;ancien-name&gt; &lt;nouveau-name&gt;

@jnavila what am I missing?

[jnavila]

The manpage of git-config has not been converted yet.
I pushed a branch "test-refactor" on git-html-l10n, where I hand-edited fr/git-add.txt.

After importing, here is the result:

I'm not satisfied with the styles, particularly when dealing with inline formats:

you can test by yourself locally, and tell me your judgment.

[jnavila]

@dscho I updated the CSS, so it is ready for review.