Add tests for comments in multi-line regexp strings.

Author: vpetrovykh

Diff for: test/regexp/python5.py

@@ -0,0 +1,32 @@
+r'foo#not a comment'
+r'''
+    (?x)        # multi-line regexp
+        foo     # comment
+'''
+R'''
+    (?x)        # not a
+        foo     # comment
+'''
+
+
+
+r             : source.python, storage.type.string.python, string.regexp.quoted.single.python
+'             : punctuation.definition.string.begin.python, source.python, string.regexp.quoted.single.python
+foo#not a comment : source.python, string.regexp.quoted.single.python
+'             : punctuation.definition.string.end.python, source.python, string.regexp.quoted.single.python
+r             : source.python, storage.type.string.python, string.regexp.quoted.triple.python
+'''           : punctuation.definition.string.begin.python, source.python, string.regexp.quoted.triple.python
+              : source.python, string.regexp.quoted.triple.python
+(?x)          : source.python, storage.modifier.flag.regexp, string.regexp.quoted.triple.python
+              : source.python, string.regexp.quoted.triple.python
+#             : comment.line.number-sign.python, punctuation.definition.comment.python, source.python, string.regexp.quoted.triple.python
+ multi-line regexp : comment.line.number-sign.python, source.python, string.regexp.quoted.triple.python
+        foo      : source.python, string.regexp.quoted.triple.python
+#             : comment.line.number-sign.python, punctuation.definition.comment.python, source.python, string.regexp.quoted.triple.python
+ comment      : comment.line.number-sign.python, source.python, string.regexp.quoted.triple.python
+'''           : punctuation.definition.string.end.python, source.python, string.regexp.quoted.triple.python
+R             : source.python, storage.type.string.python, string.quoted.triple.raw.python
+'''           : punctuation.definition.string.begin.python, source.python, string.quoted.triple.raw.python
+    (?x)        # not a : source.python, string.quoted.triple.raw.python
+        foo     # comment : source.python, string.quoted.triple.raw.python
+'''           : punctuation.definition.string.end.python, source.python, string.quoted.triple.raw.python

Diff for: test/regexp/python6.py

@@ -0,0 +1,32 @@
+r"foo#not a comment"
+r"""
+    (?x)        # multi-line regexp
+        foo     # comment
+"""
+R"""
+    (?x)        # not a
+        foo     # comment
+"""
+
+
+
+r             : source.python, storage.type.string.python, string.regexp.quoted.double.python
+"             : punctuation.definition.string.begin.python, source.python, string.regexp.quoted.double.python
+foo#not a comment : source.python, string.regexp.quoted.double.python
+"             : punctuation.definition.string.end.python, source.python, string.regexp.quoted.double.python
+r             : source.python, storage.type.string.python, string.regexp.quoted.triple.python
+"""           : punctuation.definition.string.begin.python, source.python, string.regexp.quoted.triple.python
+              : source.python, string.regexp.quoted.triple.python
+(?x)          : source.python, storage.modifier.flag.regexp, string.regexp.quoted.triple.python
+              : source.python, string.regexp.quoted.triple.python
+#             : comment.line.number-sign.python, punctuation.definition.comment.python, source.python, string.regexp.quoted.triple.python
+ multi-line regexp : comment.line.number-sign.python, source.python, string.regexp.quoted.triple.python
+        foo      : source.python, string.regexp.quoted.triple.python
+#             : comment.line.number-sign.python, punctuation.definition.comment.python, source.python, string.regexp.quoted.triple.python
+ comment      : comment.line.number-sign.python, source.python, string.regexp.quoted.triple.python
+"""           : punctuation.definition.string.end.python, source.python, string.regexp.quoted.triple.python
+R             : source.python, storage.type.string.python, string.quoted.triple.raw.python
+"""           : punctuation.definition.string.begin.python, source.python, string.quoted.triple.raw.python
+    (?x)        # not a : source.python, string.quoted.triple.raw.python
+        foo     # comment : source.python, string.quoted.triple.raw.python
+"""           : punctuation.definition.string.end.python, source.python, string.quoted.triple.raw.python