Correct docstring about return value when group didn't participate in match
(pointed out by /F)
diff --git a/Lib/pre.py b/Lib/pre.py
index 3086bd4..9dedb9c 100644
--- a/Lib/pre.py
+++ b/Lib/pre.py
@@ -526,7 +526,7 @@
Return the index of the start of the substring matched by
group; group defaults to zero (meaning the whole matched
- substring). Return None if group exists but did not contribute
+ substring). Return -1 if group exists but did not contribute
to the match.
"""
@@ -542,7 +542,7 @@
Return the indices of the end of the substring matched by
group; group defaults to zero (meaning the whole matched
- substring). Return None if group exists but did not contribute
+ substring). Return -1 if group exists but did not contribute
to the match.
"""
@@ -557,8 +557,8 @@
"""span([group=0]) -> tuple
Return the 2-tuple (m.start(group), m.end(group)). Note that
- if group did not contribute to the match, this is (None,
- None). Group defaults to zero (meaning the whole matched
+ if group did not contribute to the match, this is (-1,
+ -1). Group defaults to zero (meaning the whole matched
substring).
"""