_cleanstring_: allow regex

test/textProcessing.bats

@@ -131,6 +131,12 @@ _testCleanString_() {
     assert_output "this is a-string"
   }
 
+    @test "_cleanString_: alnum w/ spaces and dashes and regex replace" {
+    run _cleanString_ -asp "-|_|st, " "th_is(is)a-string"
+    assert_success
+    assert_output "th is is a ring"
+  }
+
   @test "_cleanString_: user replacement" {
     run _cleanString_ -p "e,g" "there should be a lot of e's in this sentence"
     assert_success