On 15 Feb 2010, at 22:25, Michael Budach wrote:
So you need to assign config_spec a valid value somewhere, or write a
rule that initializes $$ instead of the default rule.
Does that mean it is possible to redefine the default rule from
"$$ = $1;" to e.g. "$$=NULL;" ?
Can you tell me how ? I did not find anything like that in the
documentation.
You can change the skeleton file. This is a hack, because when it is
developed, if you want a new, you need to tweak it to get it updated.
But if you have some suggestions, and there is a general interest, it
might be integrated.
Anyway, the skeleton files are on my system located in /usr/local/
share/bison/. Copy the one you want to use, and in it, look for a
statement:
switch (n_) {
default:
...
}
Change the ... to what you want it to be.
Then add %skeleton "<filename>" to your .y file. It will look for it
in the same directory, or some of the common locations.
Hans
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