Lowercase hex in escaped_char, comma in unicode name escape

Author: MattDMo

PythonImproved.YAML-tmLanguage

@@ -594,7 +594,7 @@ repository:
     - include: '#generic_names'
 
   escaped_char:
-    match: (\\x[0-9A-F]{2})|(\\[0-7]{3})|(\\\n)|(\\\\)|(\\\")|(\\')|(\\a)|(\\b)|(\\f)|(\\n)|(\\r)|(\\t)|(\\v)
+    match: (\\x[0-9a-fA-F]{2})|(\\[0-7]{3})|(\\\n)|(\\\\)|(\\\")|(\\')|(\\a)|(\\b)|(\\f)|(\\n)|(\\r)|(\\t)|(\\v)
     captures:
       '1': {name: constant.character.escape.hex.python}
       '2': {name: constant.character.escape.octal.python}
@@ -611,7 +611,7 @@ repository:
       '13': {name: constant.character.escape.vertical-tab.python}
 
   escaped_unicode_char:
-    match: (\\U[0-9A-Fa-f]{8})|(\\u[0-9A-Fa-f]{4})|(\\N\{[a-zA-Z0-9 ]+\})
+    match: (\\U[0-9A-Fa-f]{8})|(\\u[0-9A-Fa-f]{4})|(\\N\{[a-zA-Z0-9\, ]+\})
     captures:
       '1': {name: constant.character.escape.unicode.16-bit-hex.python}
       '2': {name: constant.character.escape.unicode.32-bit-hex.python}