1 files changed, 3 insertions, 11 deletions
diff --git a/synapse/push/push_rule_evaluator.py b/synapse/push/push_rule_evaluator.py
index b78f2d90d7..65f9a63fd8 100644
--- a/synapse/push/push_rule_evaluator.py
+++ b/synapse/push/push_rule_evaluator.py
@@ -26,8 +26,6 @@ logger = logging.getLogger(__name__)
GLOB_REGEX = re.compile(r'\\\[(\\\!|)(.*)\\\]')
IS_GLOB = re.compile(r'[\?\*\[\]]')
INEQUALITY_EXPR = re.compile("^([=<>]*)([0-9]*)$")
-STARTS_WITH_WORD_CHAR_REGEX = re.compile(r"^\w")
-ENDS_WITH_WORD_CHAR_REGEX = re.compile(r"\w$")
def _room_member_count(ev, condition, room_member_count):
@@ -209,15 +207,9 @@ def _re_word_boundary(r):
but do so respecting the fact that strings starting or ending
with non-word characters will change word boundaries.
"""
- # Matching a regex string aginst a regex, since by definition
- # \b is the boundary between a \w and a \W, so match \w at the
- # start or end of the expression (although this will miss, eg.
- # "[dl]og")
- if STARTS_WITH_WORD_CHAR_REGEX.search(r):
- r = r"\b%s" % (r,)
- if ENDS_WITH_WORD_CHAR_REGEX.search(r):
- r = r"%s\b" % (r,)
- return r
+ # we can't use \b as it chokes on unicode. however \W seems to be okay
+ # as shorthand for [^0-9A-Za-z_].
+ return r"(^|\W)%s(\W|$)" % (r,)
def _flatten_dict(d, prefix=[], result=None):
|