--- a/mercurial/utils/stringutil.py Tue Jun 26 16:14:02 2018 +0530
+++ b/mercurial/utils/stringutil.py Tue Jun 26 10:33:52 2018 -0400
@@ -23,6 +23,25 @@
pycompat,
)
+# regex special chars pulled from https://bugs.python.org/issue29995
+# which was part of Python 3.7.
+_respecial = pycompat.bytestr(b'()[]{}?*+-|^$\\.# \t\n\r\v\f')
+_regexescapemap = {ord(i): (b'\\' + i).decode('latin1') for i in _respecial}
+
+def reescape(pat):
+ """Drop-in replacement for re.escape."""
+ # NOTE: it is intentional that this works on unicodes and not
+ # bytes, as it's only possible to do the escaping with
+ # unicode.translate, not bytes.translate. Sigh.
+ wantuni = True
+ if isinstance(pat, bytes):
+ wantuni = False
+ pat = pat.decode('latin1')
+ pat = pat.translate(_regexescapemap)
+ if wantuni:
+ return pat
+ return pat.encode('latin1')
+
def pprint(o, bprefix=False):
"""Pretty print an object."""
if isinstance(o, bytes):