merge with stable

hgext/histedit.py

@@ -363,12 +363,7 b' def finishfold(ui, repo, ctx, oldctx, ne'
     hg.update(repo, parent)
     ### prepare new commit data
     commitopts = opts.copy()
-    # username
-    if ctx.user() == oldctx.user():
-        username = ctx.user()
-    else:
-        username = ui.username()
-    commitopts['user'] = username
+    commitopts['user'] = ctx.user()
     # commit message
     if opts.get('rollup'):
         newmessage = ctx.description()

tests/run-tests.py

@@ -1125,6 +1125,7 b' class TestResult(unittest._TextTestResul'
                 self.stream.write('\nERROR: %s output changed\n' % test)
 
             self.stream.write('!')
+            self.stream.flush()
             iolock.release()
 
     def addSuccess(self, test):

tests/test-histedit-fold.t

@@ -213,6 +213,44 b' check saving last-message.txt'
   check saving last-message.txt
 
   $ cd ..
+  $ rm -r r
+
+folding preserves initial author
+--------------------------------
+
+  $ initrepo
+
+  $ hg ci --user "someone else" --amend --quiet
+
+tip before edit
+  $ hg log --rev .
+  changeset:   5:a00ad806cb55
+  tag:         tip
+  user:        someone else
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     f
+  
+
+  $ hg histedit e860deea161a --commands - 2>&1 <<EOF | fixbundle
+  > pick e860deea161a e
+  > fold a00ad806cb55 f
+  > EOF
+  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
+  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
+  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+
+tip after edit
+  $ hg log --rev .
+  changeset:   4:698d4e8040a1
+  tag:         tip
+  user:        test
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     e
+  
+
+  $ cd ..
+  $ rm -r r
 
 folding and creating no new change doesn't break:
 -------------------------------------------------