bison-1.50: how to parse apostrophe?

[Jan Nieuwenhuizen]

In our grammar file, we have this expression:

    sup_quotes:
            '\'' {
                    $$ = 1;
            }
            | sup_quotes '\'' {
                    $$ ++;
            }
            ;

but bison-1.50 doesn't like it:

    13:27:17 address@hidden:~/lily/lily
    $ make
    bison -o./out/parser.cc -d parser.yy
    parser.yy:1440.2-4: unrecognized escape: `\\\''
    parser.yy:1443.15-17: unrecognized escape: `\\\''

The NEWS file doesn't seem to mention anything about this.  What is
the recommended backwards compatible solution for this?

Also, the new column-info breaks Emacs' error parsing, which is very
annoying.  It would be helpful if the column info would be more
standard (ie, just one column number: parser.yy:1440:2: unrecognized
...), and if this feature would be turned off by default, at least
until Emacs can handle this.

Greetings,
Jan.
    
-- 
Jan Nieuwenhuizen <address@hidden> | GNU LilyPond - The music typesetter
http://www.xs4all.nl/~jantien       | http://www.lilypond.org