be more specific about what the source is in go/suspicious-character-in-regex, which also avoids using "here" in the alert-message

Author: erik-krogh

go/ql/src/Security/CWE-020/SuspiciousCharacterInRegexp.ql

@@ -48,5 +48,5 @@ class Config extends DataFlow::Configuration {
 
 from Config c, DataFlow::PathNode source, DataFlow::PathNode sink, string report
 where c.hasFlowPath(source, sink) and c.isSource(source.getNode(), report)
-select source, source, sink, "$@ used $@ contains " + report, source, "A regular expression", sink,
-  "here"
+select source, source, sink, "$@ that is $@ contains " + report, source, "A string literal", sink,
+  "used as a regular expression"

go/ql/test/query-tests/Security/CWE-020/SuspiciousCharacterInRegexp/SuspiciousCharacterInRegexp.expected

@@ -13,14 +13,14 @@ nodes
 | test.go:23:21:23:36 | "hello\\\\\\bworld" | semmle.label | "hello\\\\\\bworld" |
 subpaths
 #select
-| SuspiciousCharacterInRegexp.go:6:34:6:55 | "\\bforbidden.host.org" | SuspiciousCharacterInRegexp.go:6:34:6:55 | "\\bforbidden.host.org" | SuspiciousCharacterInRegexp.go:6:34:6:55 | "\\bforbidden.host.org" | $@ used $@ contains a literal backspace \\b; did you mean \\\\b, a word boundary? | SuspiciousCharacterInRegexp.go:6:34:6:55 | "\\bforbidden.host.org" | A regular expression | SuspiciousCharacterInRegexp.go:6:34:6:55 | "\\bforbidden.host.org" | here |
-| test.go:7:21:7:24 | "\\a" | test.go:7:21:7:24 | "\\a" | test.go:7:21:7:24 | "\\a" | $@ used $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:7:21:7:24 | "\\a" | A regular expression | test.go:7:21:7:24 | "\\a" | here |
-| test.go:9:21:9:26 | "\\\\\\a" | test.go:9:21:9:26 | "\\\\\\a" | test.go:9:21:9:26 | "\\\\\\a" | $@ used $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:9:21:9:26 | "\\\\\\a" | A regular expression | test.go:9:21:9:26 | "\\\\\\a" | here |
-| test.go:10:21:10:27 | "x\\\\\\a" | test.go:10:21:10:27 | "x\\\\\\a" | test.go:10:21:10:27 | "x\\\\\\a" | $@ used $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:10:21:10:27 | "x\\\\\\a" | A regular expression | test.go:10:21:10:27 | "x\\\\\\a" | here |
-| test.go:12:21:12:28 | "\\\\\\\\\\a" | test.go:12:21:12:28 | "\\\\\\\\\\a" | test.go:12:21:12:28 | "\\\\\\\\\\a" | $@ used $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:12:21:12:28 | "\\\\\\\\\\a" | A regular expression | test.go:12:21:12:28 | "\\\\\\\\\\a" | here |
-| test.go:14:21:14:30 | "\\\\\\\\\\\\\\a" | test.go:14:21:14:30 | "\\\\\\\\\\\\\\a" | test.go:14:21:14:30 | "\\\\\\\\\\\\\\a" | $@ used $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:14:21:14:30 | "\\\\\\\\\\\\\\a" | A regular expression | test.go:14:21:14:30 | "\\\\\\\\\\\\\\a" | here |
-| test.go:16:21:16:32 | "\\\\\\\\\\\\\\\\\\a" | test.go:16:21:16:32 | "\\\\\\\\\\\\\\\\\\a" | test.go:16:21:16:32 | "\\\\\\\\\\\\\\\\\\a" | $@ used $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:16:21:16:32 | "\\\\\\\\\\\\\\\\\\a" | A regular expression | test.go:16:21:16:32 | "\\\\\\\\\\\\\\\\\\a" | here |
-| test.go:20:21:20:34 | "hello\\aworld" | test.go:20:21:20:34 | "hello\\aworld" | test.go:20:21:20:34 | "hello\\aworld" | $@ used $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:20:21:20:34 | "hello\\aworld" | A regular expression | test.go:20:21:20:34 | "hello\\aworld" | here |
-| test.go:21:21:21:36 | "hello\\\\\\aworld" | test.go:21:21:21:36 | "hello\\\\\\aworld" | test.go:21:21:21:36 | "hello\\\\\\aworld" | $@ used $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:21:21:21:36 | "hello\\\\\\aworld" | A regular expression | test.go:21:21:21:36 | "hello\\\\\\aworld" | here |
-| test.go:22:21:22:34 | "hello\\bworld" | test.go:22:21:22:34 | "hello\\bworld" | test.go:22:21:22:34 | "hello\\bworld" | $@ used $@ contains a literal backspace \\b; did you mean \\\\b, a word boundary? | test.go:22:21:22:34 | "hello\\bworld" | A regular expression | test.go:22:21:22:34 | "hello\\bworld" | here |
-| test.go:23:21:23:36 | "hello\\\\\\bworld" | test.go:23:21:23:36 | "hello\\\\\\bworld" | test.go:23:21:23:36 | "hello\\\\\\bworld" | $@ used $@ contains a literal backspace \\b; did you mean \\\\b, a word boundary? | test.go:23:21:23:36 | "hello\\\\\\bworld" | A regular expression | test.go:23:21:23:36 | "hello\\\\\\bworld" | here |
+| SuspiciousCharacterInRegexp.go:6:34:6:55 | "\\bforbidden.host.org" | SuspiciousCharacterInRegexp.go:6:34:6:55 | "\\bforbidden.host.org" | SuspiciousCharacterInRegexp.go:6:34:6:55 | "\\bforbidden.host.org" | $@ that is $@ contains a literal backspace \\b; did you mean \\\\b, a word boundary? | SuspiciousCharacterInRegexp.go:6:34:6:55 | "\\bforbidden.host.org" | A string literal | SuspiciousCharacterInRegexp.go:6:34:6:55 | "\\bforbidden.host.org" | used as a regular expression |
+| test.go:7:21:7:24 | "\\a" | test.go:7:21:7:24 | "\\a" | test.go:7:21:7:24 | "\\a" | $@ that is $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:7:21:7:24 | "\\a" | A string literal | test.go:7:21:7:24 | "\\a" | used as a regular expression |
+| test.go:9:21:9:26 | "\\\\\\a" | test.go:9:21:9:26 | "\\\\\\a" | test.go:9:21:9:26 | "\\\\\\a" | $@ that is $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:9:21:9:26 | "\\\\\\a" | A string literal | test.go:9:21:9:26 | "\\\\\\a" | used as a regular expression |
+| test.go:10:21:10:27 | "x\\\\\\a" | test.go:10:21:10:27 | "x\\\\\\a" | test.go:10:21:10:27 | "x\\\\\\a" | $@ that is $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:10:21:10:27 | "x\\\\\\a" | A string literal | test.go:10:21:10:27 | "x\\\\\\a" | used as a regular expression |
+| test.go:12:21:12:28 | "\\\\\\\\\\a" | test.go:12:21:12:28 | "\\\\\\\\\\a" | test.go:12:21:12:28 | "\\\\\\\\\\a" | $@ that is $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:12:21:12:28 | "\\\\\\\\\\a" | A string literal | test.go:12:21:12:28 | "\\\\\\\\\\a" | used as a regular expression |
+| test.go:14:21:14:30 | "\\\\\\\\\\\\\\a" | test.go:14:21:14:30 | "\\\\\\\\\\\\\\a" | test.go:14:21:14:30 | "\\\\\\\\\\\\\\a" | $@ that is $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:14:21:14:30 | "\\\\\\\\\\\\\\a" | A string literal | test.go:14:21:14:30 | "\\\\\\\\\\\\\\a" | used as a regular expression |
+| test.go:16:21:16:32 | "\\\\\\\\\\\\\\\\\\a" | test.go:16:21:16:32 | "\\\\\\\\\\\\\\\\\\a" | test.go:16:21:16:32 | "\\\\\\\\\\\\\\\\\\a" | $@ that is $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:16:21:16:32 | "\\\\\\\\\\\\\\\\\\a" | A string literal | test.go:16:21:16:32 | "\\\\\\\\\\\\\\\\\\a" | used as a regular expression |
+| test.go:20:21:20:34 | "hello\\aworld" | test.go:20:21:20:34 | "hello\\aworld" | test.go:20:21:20:34 | "hello\\aworld" | $@ that is $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:20:21:20:34 | "hello\\aworld" | A string literal | test.go:20:21:20:34 | "hello\\aworld" | used as a regular expression |
+| test.go:21:21:21:36 | "hello\\\\\\aworld" | test.go:21:21:21:36 | "hello\\\\\\aworld" | test.go:21:21:21:36 | "hello\\\\\\aworld" | $@ that is $@ contains the bell character \\a; did you mean \\\\a, the Vim alphabetic character class (use [[:alpha:]] instead) or \\\\A, the beginning of text? | test.go:21:21:21:36 | "hello\\\\\\aworld" | A string literal | test.go:21:21:21:36 | "hello\\\\\\aworld" | used as a regular expression |
+| test.go:22:21:22:34 | "hello\\bworld" | test.go:22:21:22:34 | "hello\\bworld" | test.go:22:21:22:34 | "hello\\bworld" | $@ that is $@ contains a literal backspace \\b; did you mean \\\\b, a word boundary? | test.go:22:21:22:34 | "hello\\bworld" | A string literal | test.go:22:21:22:34 | "hello\\bworld" | used as a regular expression |
+| test.go:23:21:23:36 | "hello\\\\\\bworld" | test.go:23:21:23:36 | "hello\\\\\\bworld" | test.go:23:21:23:36 | "hello\\\\\\bworld" | $@ that is $@ contains a literal backspace \\b; did you mean \\\\b, a word boundary? | test.go:23:21:23:36 | "hello\\\\\\bworld" | A string literal | test.go:23:21:23:36 | "hello\\\\\\bworld" | used as a regular expression |