travis-ci: record and skip successfully built trees

diff --git a/ci/test-documentation.sh b/ci/test-documentation.sh
index 579d540d32995715114f3b81ab5839800d9e006b..3d62e6c9539b04f1601b92617a514c1a8b63fe56 100755 (executable)
--- a/ci/test-documentation.sh
+++ b/ci/test-documentation.sh
@@ -1,14 +1,29 @@
-#!/bin/sh
+#!/usr/bin/env bash
 #
 # Perform sanity checks on documentation and build it.
 #
 
-set -e
+. ${0%/*}/lib-travisci.sh
+
+gem install asciidoctor
 
 make check-builtins
 make check-docs
-make doc
 
+# Build docs with AsciiDoc
+make --jobs=2 doc > >(tee stdout.log) 2> >(tee stderr.log >&2)
+! test -s stderr.log
 test -s Documentation/git.html
 test -s Documentation/git.xml
 test -s Documentation/git.1
+grep '<meta name="generator" content="AsciiDoc ' Documentation/git.html
+
+# Build docs with AsciiDoctor
+make clean
+make --jobs=2 USE_ASCIIDOCTOR=1 doc > >(tee stdout.log) 2> >(tee stderr.log >&2)
+sed '/^GIT_VERSION = / d' stderr.log
+! test -s stderr.log
+test -s Documentation/git.html
+grep '<meta name="generator" content="Asciidoctor ' Documentation/git.html
+
+save_good_tree