Cd command hack for case-insensitive completion in ranger 1.6.1

commands.py

from ranger.config.commands import cd

class cd(cd):
    def tab(self):
        import os
        from os.path import dirname, basename, expanduser, join

        cwd = self.fm.thisdir.path
        rel_dest = self.rest(1)

        bookmarks = [v.path for v in self.fm.bookmarks.dct.values()
                if rel_dest in v.path ]

        # expand the tilde into the user directory
        if rel_dest.startswith('~'):
            rel_dest = expanduser(rel_dest)

        # define some shortcuts
        abs_dest = join(cwd, rel_dest)
        abs_dirname = dirname(abs_dest)
        rel_basename = basename(rel_dest)
        rel_dirname = dirname(rel_dest)

        try:
            # are we at the end of a directory?
            if rel_dest.endswith('/') or rel_dest == '':
                _, dirnames, _ = next(os.walk(abs_dest))

            # are we in the middle of the filename?
            else:

# hackish option: remove the 5 hashes below to keep case-insensitive completion
# as a fallback (use it only when no other completions give results)
# Keep the spaces. :)
#
#               |
#               v

                #_, dirnames, _ = next(os.walk(abs_dirname))
                #dirnames = [dn for dn in dirnames \
                #        if dn.startswith(rel_basename)]

                ## nothing found, try case insensitive matching
                #if len(dirnames) == 0:
                    _, dirnames, _ = next(os.walk(abs_dirname))
                    lower_rel_basename = rel_basename.lower()
                    dirnames = [dn for dn in dirnames \
                            if dn.lower().startswith(lower_rel_basename)]

        except (OSError, StopIteration):
            # os.walk found nothing
            pass
        else:
            dirnames.sort()
            dirnames = bookmarks + dirnames

            # no results, return None
            if len(dirnames) == 0:
                return

            # one result. since it must be a directory, append a slash.
            if len(dirnames) == 1:
                return self.start(1) + join(rel_dirname, dirnames[0]) + '/'

            # more than one result. append no slash, so the user can
            # manually type in the slash to advance into that directory
            return (self.start(1) + join(rel_dirname, dirname) for dirname in dirnames)