doc lint: check that synopsis manpages have synopsis inlines

When switching manpages to the synopsis style, the description lists of
options need to be switched to inline synopsis for proper formatting. This
is done by enclosing the option name in double backticks, e.g. `--option`.

Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: jnavila

Documentation/git-checkout.adoc

@@ -334,7 +334,7 @@ include::diff-context-options.adoc[]
 	separated with _NUL_ character and all other characters are taken
 	literally (including newlines and quotes).
 
-<branch>::
+`<branch>`::
 	Branch to checkout; if it refers to a branch (i.e., a name that,
 	when prepended with "refs/heads/", is a valid ref), then that
 	branch is checked out. Otherwise, if it refers to a valid

Documentation/git-refs.adoc

@@ -20,41 +20,41 @@ This command provides low-level access to refs.
 COMMANDS
 --------
 
-migrate::
+`migrate`::
 	Migrate ref store between different formats.
 
-verify::
+`verify`::
 	Verify reference database consistency.
 
 OPTIONS
 -------
 
-The following options are specific to 'git refs migrate':
+The following options are specific to `git refs migrate`:
 
---ref-format=<format>::
+`--ref-format=<format>`::
 	The ref format to migrate the ref store to. Can be one of:
 +
 include::ref-storage-format.adoc[]
 
---dry-run::
+`--dry-run`::
 	Perform the migration, but do not modify the repository. The migrated
 	refs will be written into a separate directory that can be inspected
 	separately. The name of the directory will be reported on stdout. This
 	can be used to double check that the migration works as expected before
 	performing the actual migration.
 
---reflog::
---no-reflog::
+`--reflog`::
+`--no-reflog`::
 	Choose between migrating the reflog data to the new backend,
 	and discarding them.  The default is "--reflog", to migrate.
 
-The following options are specific to 'git refs verify':
+The following options are specific to `git refs verify`:
 
---strict::
+`--strict`::
 	Enable stricter error checking. This will cause warnings to be
 	reported as errors. See linkgit:git-fsck[1].
 
---verbose::
+`--verbose`::
 	When verifying the reference database consistency, be chatty.
 
 KNOWN LIMITATIONS

Documentation/lint-documentation-style.perl

@@ -21,6 +21,12 @@ sub report {
 	if ($line =~ /^`?--\[no-\][a-z0-9-]+.*(::|;;)$/) {
 		report($line, "definition list item with a `--[no-]` parameter");
 	}
+	if ($line =~ /^\[synopsis\]$/) {
+		$synopsis_style = 1;
+	}
+	if (($line =~ /^(-[-a-z].*|<[-a-z0-9]+>(\.{3})?)(::|;;)$/) && ($synopsis_style)) {
+			report($line, "synopsis style and definition list item not backquoted");
+	}
 }