Opened 20 months ago

Last modified 3 months ago

#28936 assigned Bug

simplify_regex should remove redundant escape sequences outside groups — at Initial Version

Reported by: Cristi Vîjdea Owned by: nobody
Component: contrib.admindocs Version: 2.0
Severity: Normal Keywords: simplify_regex path
Cc: ChillarAnand Triage Stage: Accepted
Has patch: no Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: yes


django.contrib.admindocs.views.simplify_urls should clean up escapes found outside path parameters. Otherwise, broken URLs with backslashes can be generated and displayed.

This is readily apparent with Django 2's path(), which aggresively escapes everything outside a <parameter> specifier, resulting in a urlpattern with backslash-escaped forward slashes:

>>> simplify_regex(r"^(?P<sport_slug>\w+)/athletes/(?P<athlete_slug>\w+)/$")
>>> simplify_regex(r"^(?P<sport_slug>\w+)\/athletes\/(?P<athlete_slug>\w+)\/$")

The second example is what path() would generate in urlpatterns.

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