hg

dirstate: preserve path components case on renames (issue3402)

The original issue was something like:

  $ hg init repo
  $ cd repo
  $ mkdir D
  $ echo a > D/a
  $ hg ci -Am adda
  adding D/a
  $ mv D temp
  $ mv temp d
  $ echo b > d/b
  $ hg add d/b
  adding D/b
  $ hg ci -m addb
  $ hg mv d/b d/c
  moving D/b to d/c
  $ hg st
  A d/c
  R D/b

Here we expected:

  A D/c
  R D/b

the logic being we try to preserve case of path components already known in the
dirstate. This is fixed by the current patch.

Note the following stories are not still not supported:

Changing directory case
  $ hg mv D d
  moving D/a to D/D/a
  moving D/b to D/D/b
  $ hg st
  A D/D/a
  A D/D/b
  R D/a
  R D/b

or:

  $ hg mv D/* d
  D/a: not overwriting - file exists
  D/b: not overwriting - file exists

And if they were, there are probably similar issues with diffing/patching.

#!/usr/bin/env python
#
# mercurial - scalable distributed SCM
#
# Copyright 2005-2007 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

import os
import sys

libdir = '@LIBDIR@'

if libdir != '@' 'LIBDIR' '@':
    if not os.path.isabs(libdir):
        libdir = os.path.join(os.path.dirname(os.path.realpath(__file__)),
                              libdir)
        libdir = os.path.abspath(libdir)
    sys.path.insert(0, libdir)

# enable importing on demand to reduce startup time
try:
    from mercurial import demandimport; demandimport.enable()
except ImportError:
    import sys
    sys.stderr.write("abort: couldn't find mercurial libraries in [%s]\n" %
                     ' '.join(sys.path))
    sys.stderr.write("(check your install and PYTHONPATH)\n")
    sys.exit(-1)

import mercurial.util
import mercurial.dispatch

for fp in (sys.stdin, sys.stdout, sys.stderr):
    mercurial.util.setbinary(fp)

mercurial.dispatch.run()