[PATCH 16/23] doc-diff: support asciidoctor man pages

[Felipe Contreras <felipe.contreras@gmail.com>]

From: Jeff King <peff@peff.net>

The new option enables both asciidoctor as well as its direct-to-manpage
mode that skips xmlto. This lets you view the rendered difference
between the two pipelines with something like:

  ./doc-diff --from-asciidoctor --to-asciidoctor-direct HEAD HEAD

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
---
 Documentation/doc-diff | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/doc-diff b/Documentation/doc-diff
index 6b6bb444ac..bbfeaa213b 100755
--- a/Documentation/doc-diff
+++ b/Documentation/doc-diff
@@ -17,10 +17,13 @@ f			force rebuild; do not rely on cached results
 c,clean			cleanup temporary working files
 from-asciidoc		use asciidoc with the 'from'-commit
 from-asciidoctor	use asciidoctor with the 'from'-commit
+from-asciidoctor-direct use asciidoctor without xmlto for 'from'-commit
 asciidoc		use asciidoc with both commits
 to-asciidoc		use asciidoc with the 'to'-commit
 to-asciidoctor		use asciidoctor with the 'to'-commit
+to-asciidoctor-direct   use asciidoctor without xmlto for 'to'-commit
 asciidoctor		use asciidoctor with both commits
+asciidoctor-direct      use asciidoctor without xml for both commits
 "
 SUBDIRECTORY_OK=1
 . "$(git --exec-path)/git-sh-setup"
@@ -53,6 +56,13 @@ do
 	--asciidoc)
 		from_program=-asciidoc
 		to_program=-asciidoc ;;
+	--from-asciidoctor-direct)
+		from_program=-asciidoctor-direct ;;
+	--to-asciidoctor-direct)
+		to_program=-asciidoctor-direct ;;
+	--asciidoctor-direct)
+		from_program=-asciidoctor-direct
+		to_program=-asciidoctor-direct ;;
 	--)
 		shift; break ;;
 	*)
@@ -108,6 +118,10 @@ construct_makemanflags () {
 	elif test "$1" = "-asciidoctor"
 	then
 		echo USE_ASCIIDOCTOR=YesPlease ASCIIDOC_FLAGS='-adocdate="01/01/1970"'
+	elif test "$1" = "-asciidoctor-direct"
+	then
+		echo USE_ASCIIDOCTOR=YesPlease ASCIIDOC_FLAGS='-adocdate="01/01/1970"'
+		echo USE_ASCIIDOCTOR_MANPAGE=YesPlease
 	fi
 }
 
-- 
2.32.0