context: fix filectx.undelete() (issue2388)

mercurial/context.py

@@ -843,7 +843,7 b' class workingctx(changectx):'
                 if self._repo.dirstate[f] != 'r':
                     self._repo.ui.warn(_("%s not removed!\n") % f)
                 else:
-                    fctx = f in pctxs[0] and pctxs[0] or pctxs[1]
+                    fctx = f in pctxs[0] and pctxs[0][f] or pctxs[1][f]
                     t = fctx.data()
                     self._repo.wwrite(f, t, fctx.flags())
                     self._repo.dirstate.normal(f)

tests/test-mq-qrename

@@ -36,4 +36,18 b' hg qrename y'
 hg qcommit -m rename
 cd ..
 
-
+echo '% test overlapping renames (issue2388)'
+hg init c
+cd c
+hg qinit -c
+echo a > a
+hg add
+hg qnew patcha
+echo b > b
+hg add
+hg qnew patchb
+hg ci --mq -m c1
+hg qrename patchb patchc
+hg qrename patcha patchb
+hg st --mq
+cd ..
  No newline at end of file

tests/test-mq-qrename.out

@@ -8,3 +8,10 b' baz'
 new/dir
 .hg/patches/new/dir
 % test patch being renamed before committed
+% test overlapping renames (issue2388)
+adding a
+adding b
+M patchb
+M series
+A patchc
+R patcha