diff mercurial/transaction.py @ 23063:cd86a6707159 stable

transactions: fix hg recover with fncache backups The transaction backupfiles logic was broken for 'hg recover'. The file format is XXX\0XXX\0YYY\0YYY\0 but the parser did a couple things wrong. 1) It went one step beyond the final \0 and tried to read past the end of the array. 2) array[i:i+1] returns a single item, instead of two items as intended. Added a test to catch it, which turns out to be the first actual 'hg recover' test.
author Durham Goode <durham@fb.com>
date Mon, 20 Oct 2014 16:53:56 -0700
parents 4c6198737ad8
children 5dc888b79e70
line wrap: on
line diff
--- a/mercurial/transaction.py	Sun Oct 19 16:48:33 2014 +0900
+++ b/mercurial/transaction.py	Mon Oct 20 16:53:56 2014 -0700
@@ -349,8 +349,9 @@
         data = fp.read()
         if len(data) > 0:
             parts = data.split('\0')
-            for i in xrange(0, len(parts), 2):
-                f, b = parts[i:i + 1]
+            # Skip the final part, since it's just a trailing empty space
+            for i in xrange(0, len(parts) - 1, 2):
+                f, b = parts[i:i + 2]
                 backupentries.append((f, b, None))
 
     _playback(file, report, opener, entries, backupentries)