comparison mercurial/merge.py @ 11451:51021f4c80b5 stable

resolve: do not crash on empty mergestate

I managed to get an empty .hg/merge/state file by interrupting a merge
by pressing Control-C. This lead to this error:

  TypeError: a2b_hex() argument 1 must be string or read-only buffer,
  not None

since localnode is assigned None before the iteration over lines in
the mergestate begins.

11450:6bca9801c92a

            self._local = node
        shutil.rmtree(self._repo.join("merge"), True)
    def _read(self):
        self._state = {}
        try:
            localnode = None
            f = self._repo.opener("merge/state")
            for i, l in enumerate(f):
                if i == 0:
                    localnode = l[:-1]
                else:
                    bits = l[:-1].split("\0")
                    self._state[bits[0]] = bits[1:]
            self._local = bin(localnode)
        except IOError, err:
            if err.errno != errno.ENOENT:
                raise
    def _write(self):
        f = self._repo.opener("merge/state", "w")

11451:51021f4c80b5

            self._local = node
        shutil.rmtree(self._repo.join("merge"), True)
    def _read(self):
        self._state = {}
        try:
            f = self._repo.opener("merge/state")
            for i, l in enumerate(f):
                if i == 0:
                    self._local = bin(l[:-1])
                else:
                    bits = l[:-1].split("\0")
                    self._state[bits[0]] = bits[1:]
        except IOError, err:
            if err.errno != errno.ENOENT:
                raise
    def _write(self):
        f = self._repo.opener("merge/state", "w")