1852             if self.firstlinekey in updatedict:

  1852             if self.firstlinekey in updatedict:

  1853                 e = _(b"%r can't be used as a key")

  1853                 e = _(b"%r can't be used as a key")

  1854                 raise error.CorruptedState(e % self.firstlinekey)

  1854                 raise error.CorruptedState(e % self.firstlinekey)

  1855             d.update(updatedict)

  1855             d.update(updatedict)

  1856         except ValueError as e:

  1856         except ValueError as e:

  1858         return d

  1858         return d

  1859 

  1859 

  1860     def write(self, data, firstline=None):

  1860     def write(self, data, firstline=None):

  1861         """Write key=>value mapping to a file

  1861         """Write key=>value mapping to a file

  1862         data is a dict. Keys must be alphanumerical and start with a letter.

  1862         data is a dict. Keys must be alphanumerical and start with a letter.