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extlink: Strip a leading backslash on compiling pattern

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This commit is contained in:
Takeshi KOMIYA
2022-03-27 23:55:10 +09:00
parent 554f589fde
commit aee4e42b81
1 changed files with 7 additions and 1 deletions
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8
sphinx/ext/extlinks.py
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@@ -26,6 +26,7 @@
"""
import re
import sys
import warnings
from typing import Any, Dict, List, Tuple
@@ -70,7 +71,12 @@ class ExternalLinksChecker(SphinxPostTransform):
title = refnode.astext()
for alias, (base_uri, _caption) in self.app.config.extlinks.items():
uri_pattern = re.compile(re.escape(base_uri).replace('%s', '(?P<value>.+)'))
if sys.version_info < (3, 7):
# Replace a leading backslash because re.escape() inserts a backslash before % on python 3.6
uri_pattern = re.compile(re.escape(base_uri).replace('\\%s', '(?P<value>.+)'))
else:
uri_pattern = re.compile(re.escape(base_uri).replace('%s', '(?P<value>.+)'))
match = uri_pattern.match(uri)
if match and match.groupdict().get('value'):
# build a replacement suggestion