Re: append-semicolon-to-action backward compatibility patch

[Paul Eggert]

> From: Akim Demaille <address@hidden>
> Date: Sun, 05 Jan 2003 14:19:40 +0100
> 
> Bison should never have accepted such inputs,

You might have to take that up with RMS; I suspect that he put that
feature in.  (I wouldn't have done it myself....)

> This change is very much C oriented,

Absolutely.  The change should be done only for C-like languages.

> Having people fix their grammars is saner, imho.

Perhaps; but Bison 1.50 and 1.75 have developed a reputation for
breaking grammars that worked perfectly well with earlier versions of
Bison.  I don't want people to have excuses to stick with old
versions.  Admittedly it is a judgment call, but this change is a pure
extension to POSIX and is perfectly safe, as far as I can tell.

I have started to prepare a patch for a --pedantic option to Bison,
which will catch the use of extensions like this.  I think it should
wait until after Bison 2.0 is out, though.