* Fixed: [Double free when using libxml2 as regex engine #117](https://github.com/clicon/clixon/issues/117)

* added libxml2 support in test_pattern.sh when libxml2 is configured

test/test_pattern.sh

@@ -7,7 +7,6 @@
 # Test strings have been generated by:
 #   https://www.browserling.com/tools/text-from-regex
 # This is an unit test, not a clixon system test
-# See test_regexp.sh for unit regexp tests
 #
 # NOTE: no tests for ' quote in strings
 # NOTE, the following does not match in libxml2 (but in clixon):
@@ -22,9 +21,15 @@ APPNAME=example
 cfg=$dir/pattern.xml
 fyang=$dir/pattern.yang
 
-# Regexp mode: posix or libxml2
-: ${regex:=posix}
 
+regexlist="posix"
+if [ "${WITH_LIBXML2}" = yes ] ; then
+    regexlist="$regexlist libxml2"
+fi
+# Loop over supported regexps. Always run posix, run libxml2 if configured
+for regex in $regexlist; do
+    new "pattern tests for regex:$regex"
+    
 cat <<EOF > $cfg
 <clixon-config xmlns="http://clicon.org/config">
   <CLICON_CONFIGFILE>$cfg</CLICON_CONFIGFILE>
@@ -720,7 +725,6 @@ testrun "p$pnr" 0 '<![CDATA01234567890]]>'
 #testrun "p$pnr" 0 '<![CDATA[0123456789]]' # XML parse error
 
 # CLI tests
-
 new "CLI tests for RFC7950 Sec 9.4.7 ex 2 AB"
 expectfn "$clixon_cli -1f $cfg -l o set c rfc2 AB" 0 '^$'
 
@@ -797,6 +801,8 @@ if [ $BE -ne 0 ]; then
     sudo pkill -u root -f clixon_backend
 fi
 
+done # regex
+
 rm -rf $dir
 
 # unset conditional parameters