Fix for issue1488943 - difflib.Differ() doesn't always add hints for tab
characters.
diff --git a/Lib/difflib.py b/Lib/difflib.py
index 679bd2a..b43dc97 100644
--- a/Lib/difflib.py
+++ b/Lib/difflib.py
@@ -1061,20 +1061,21 @@
Example:
>>> d = Differ()
- >>> results = d._qformat('\tabcDefghiJkl\n', '\t\tabcdefGhijkl\n',
- ... ' ^ ^ ^ ', '+ ^ ^ ^ ')
+ >>> results = d._qformat('\tabcDefghiJkl\n', '\tabcdefGhijkl\n',
+ ... ' ^ ^ ^ ', ' ^ ^ ^ ')
>>> for line in results: print repr(line)
...
'- \tabcDefghiJkl\n'
'? \t ^ ^ ^\n'
- '+ \t\tabcdefGhijkl\n'
- '? \t ^ ^ ^\n'
+ '+ \tabcdefGhijkl\n'
+ '? \t ^ ^ ^\n'
"""
# Can hurt, but will probably help most of the time.
common = min(_count_leading(aline, "\t"),
_count_leading(bline, "\t"))
common = min(common, _count_leading(atags[:common], " "))
+ common = min(common, _count_leading(btags[:common], " "))
atags = atags[common:].rstrip()
btags = btags[common:].rstrip()