Expected string can be a regex now

test/test_rdlink.sh

@@ -230,7 +230,7 @@ rl::testcmp() {
   local testresult_graphic="${color_red}✗${color_less}" # alt. symbol ≠
   local link="$(readlink -- "${input}")"
 
-  if [[ "${expect}" == "${actual}" ]] ; then
+  if [[ "${actual}" =~ ${expect} ]] ; then
     # Don't print success for this flag
     (( flag_printerror )) && return 0
     testresult=1