allow committing a removed directory

fix issue1089

tests/test-issue1089

@@ -0,0 +1,17 b''
+#!/bin/sh
+
+hg init a
+cd a
+mkdir a
+echo a > a/b
+hg ci -Am m
+hg rm a
+hg ci -m m a
+
+mkdir a b
+echo a > a/b
+hg ci -Am m
+hg rm a
+cd b
+# relative delete
+hg ci -m m ../a

tests/test-issue1089.out

@@ -0,0 +1,4 b''
+adding a/b
+removing a/b
+adding a/b
+removing a/b

mercurial/cmdutil.py

@@ -1155,6 +1155,12 b' def commit(ui, repo, commitfunc, pats, o'
         modified, added, removed = repo.status(match=m)[:3]
         files = util.sort(modified + added + removed)
         slist = None
+
+        def is_dir(f):
+            name = f + '/'
+            i = bisect.bisect(files, name)
+            return i < len(files) and files[i].startswith(name)
+
         for f in m.files():
             if f == '.':
                 continue
@@ -1164,11 +1170,11 b' def commit(ui, repo, commitfunc, pats, o'
                 try:
                     mode = os.lstat(rf)[stat.ST_MODE]
                 except OSError:
+                    if is_dir(f): # deleted directory ?
+                        continue
                     raise util.Abort(_("file %s not found!") % rel)
                 if stat.S_ISDIR(mode):
-                    name = f + '/'
-                    i = bisect.bisect(files, name)
-                    if i >= len(files) or not files[i].startswith(name):
+                    if not is_dir(f):
                         raise util.Abort(_("no match under directory %s!")
                                          % rel)
                 elif not (stat.S_ISREG(mode) or stat.S_ISLNK(mode)):