Re: Is there an option to change the message produced by bison's YYERROR_VERBOSE?

[Hans Åberg]

> On 7 Nov 2016, at 22:03, Simon Sobisch <address@hidden> wrote:

>> It should not be too difficult, as it now uses M4. The only problem is
> when the Bison skeleton file is updated, then you have an outdated
> skeleton file.
> 
> * Where do I find the correct skeleton file?

Typically in /usr/local/share/bison/ or somewhere.

> * How do I get familiar with m4 fast?

It is fairly readable, so modify the relevant parts. I try to avoid macro 
programming :-), but check its manual, available at 
https://www.gnu.org/software/m4/manual/.

> * How do I apply it (both via a manual call to bison in the makefile and
> with the implicit yacc rule)?

Just include it in the grammar file, have it in the sam directory; see the 
Bison manual.
> 
>> But you may develop it as a feature, and then integrate it into Bison
> yourself, or suggest it. The feature might be an option adding an extra
> argument to yyerror with a reference to the error token.
> 
> Sounds even much better. How to do this? If this isn't possible to be
> applied "in-tree" (via m4 or otherwise - I guess it isn't) this would
> only help people with a recent and unpublished Bison version (btw: are
> there plans for a new release soon?) - or with the generated files.

The developers seem not very active (cc'ed) right now. So try the above.