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authorAmber Brown <hawkowl@atleastfornow.net>2018-11-01 21:31:46 +1100
committerAmber Brown <hawkowl@atleastfornow.net>2018-11-01 21:31:46 +1100
commit907e6da5be20523bd1d0a14c196289a73182aa65 (patch)
tree30e700dadabd415c169c3850aaf73aef817ef7e2 /synapse/api
parentMerge pull request #4072 from steamp0rt/patch-1 (diff)
parentchangelog (diff)
downloadsynapse-907e6da5be20523bd1d0a14c196289a73182aa65.tar.xz
Merge branch 'release-v0.33.8'
Diffstat (limited to 'synapse/api')
-rw-r--r--synapse/api/filtering.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/synapse/api/filtering.py b/synapse/api/filtering.py
index eed8c67e6a..677c0bdd4c 100644
--- a/synapse/api/filtering.py
+++ b/synapse/api/filtering.py
@@ -172,7 +172,10 @@ USER_FILTER_SCHEMA = {
                 # events a lot easier as we can then use a negative lookbehind
                 # assertion to split '\.' If we allowed \\ then it would
                 # incorrectly split '\\.' See synapse.events.utils.serialize_event
-                "pattern": "^((?!\\\).)*$"
+                #
+                # Note that because this is a regular expression, we have to escape
+                # each backslash in the pattern.
+                "pattern": r"^((?!\\\\).)*$"
             }
         }
     },