diff -r 4bae3c117b57 -r 3b7cb3d17137 tests/test-rebase-collapse.t
--- a/tests/test-rebase-collapse.t	Mon Jun 26 13:13:51 2017 -0700
+++ b/tests/test-rebase-collapse.t	Fri Jul 07 18:51:46 2017 -0700
@@ -78,7 +78,7 @@
   HG: added C
   HG: added D
   ====
-  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/42ccdea3bb16-3cb021d3-backup.hg (glob)
+  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/42ccdea3bb16-3cb021d3-rebase.hg (glob)
 
   $ hg tglogp
   @  5:secret 'Collapsed revision
@@ -118,7 +118,7 @@
   $ hg rebase --source 4 --collapse --dest 7
   rebasing 4:9520eea781bc "E"
   rebasing 6:eea13746799a "G"
-  saved backup bundle to $TESTTMP/a2/.hg/strip-backup/9520eea781bc-fcd8edd4-backup.hg (glob)
+  saved backup bundle to $TESTTMP/a2/.hg/strip-backup/9520eea781bc-fcd8edd4-rebase.hg (glob)
 
   $ hg tglog
   o  6: 'Collapsed revision
@@ -161,7 +161,7 @@
   rebasing 4:9520eea781bc "E"
   rebasing 6:eea13746799a "G"
   HGEDITFORM=rebase.collapse
-  saved backup bundle to $TESTTMP/a3/.hg/strip-backup/9520eea781bc-fcd8edd4-backup.hg (glob)
+  saved backup bundle to $TESTTMP/a3/.hg/strip-backup/9520eea781bc-fcd8edd4-rebase.hg (glob)
 
   $ hg tglog
   o  6: 'custom message'
@@ -271,7 +271,7 @@
   rebasing 4:8a5212ebc852 "E"
   rebasing 5:7f219660301f "F"
   rebasing 6:c772a8b2dc17 "G"
-  saved backup bundle to $TESTTMP/b1/.hg/strip-backup/8a5212ebc852-75046b61-backup.hg (glob)
+  saved backup bundle to $TESTTMP/b1/.hg/strip-backup/8a5212ebc852-75046b61-rebase.hg (glob)
 
   $ hg tglog
   o    5: 'Collapsed revision
@@ -424,7 +424,7 @@
   merging E
   rebasing 6:55a44ad28289 "G"
   rebasing 7:417d3b648079 "H"
-  saved backup bundle to $TESTTMP/c1/.hg/strip-backup/8a5212ebc852-f95d0879-backup.hg (glob)
+  saved backup bundle to $TESTTMP/c1/.hg/strip-backup/8a5212ebc852-f95d0879-rebase.hg (glob)
 
   $ hg tglog
   o    5: 'Collapsed revision
@@ -517,7 +517,7 @@
   rebasing 2:f838bfaca5c7 "C"
   rebasing 3:7bbcd6078bcc "D"
   rebasing 4:0a42590ed746 "E"
-  saved backup bundle to $TESTTMP/d1/.hg/strip-backup/27547f69f254-9a3f7d92-backup.hg (glob)
+  saved backup bundle to $TESTTMP/d1/.hg/strip-backup/27547f69f254-9a3f7d92-rebase.hg (glob)
 
   $ hg tglog
   o  2: 'Collapsed revision
@@ -602,7 +602,7 @@
   $ hg rebase -s 5 -d 4
   rebasing 5:fbfb97b1089a "E" (tip)
   note: rebase of 5:fbfb97b1089a created no changes to commit
-  saved backup bundle to $TESTTMP/e/.hg/strip-backup/fbfb97b1089a-553e1d85-backup.hg (glob)
+  saved backup bundle to $TESTTMP/e/.hg/strip-backup/fbfb97b1089a-553e1d85-rebase.hg (glob)
   $ hg tglog
   @  4: 'E'
   |
@@ -660,7 +660,7 @@
   rebasing 3:338e84e2e558 "move2" (tip)
   merging f and c to c
   merging e and g to g
-  saved backup bundle to $TESTTMP/copies/.hg/strip-backup/6e7340ee38c0-ef8ef003-backup.hg (glob)
+  saved backup bundle to $TESTTMP/copies/.hg/strip-backup/6e7340ee38c0-ef8ef003-rebase.hg (glob)
   $ hg st
   $ hg st --copies --change tip
   A d
@@ -701,7 +701,7 @@
   $ hg rebase --collapse -b . -d 0
   rebasing 1:1352765a01d4 "change"
   rebasing 2:64b456429f67 "Collapsed revision" (tip)
-  saved backup bundle to $TESTTMP/copies/.hg/strip-backup/1352765a01d4-45a352ea-backup.hg (glob)
+  saved backup bundle to $TESTTMP/copies/.hg/strip-backup/1352765a01d4-45a352ea-rebase.hg (glob)
   $ hg st --change tip --copies
   M a
   M c
@@ -793,7 +793,7 @@
   $ hg rebase -d 0 -r "1::2" --collapse -m collapsed
   rebasing 1:6d8d9f24eec3 "a"
   rebasing 2:1cc73eca5ecc "b" (tip foo)
-  saved backup bundle to $TESTTMP/collapseaddremove/.hg/strip-backup/6d8d9f24eec3-77d3b6e2-backup.hg (glob)
+  saved backup bundle to $TESTTMP/collapseaddremove/.hg/strip-backup/6d8d9f24eec3-77d3b6e2-rebase.hg (glob)
   $ hg log -G --template "{rev}: '{desc}' {bookmarks}"
   @  1: 'collapsed' foo
   |
@@ -834,7 +834,7 @@
   continue: hg rebase --continue
   $ hg rebase --continue
   rebasing 2:b8d8db2b242d "a-dev" (tip)
-  saved backup bundle to $TESTTMP/collapse_remember_message/.hg/strip-backup/b8d8db2b242d-f474c19a-backup.hg (glob)
+  saved backup bundle to $TESTTMP/collapse_remember_message/.hg/strip-backup/b8d8db2b242d-f474c19a-rebase.hg (glob)
   $ hg log
   changeset:   2:45ba1d1a8665
   tag:         tip