Re: Kconfig: '+config' valid syntax?

Paul Bolle
2015-07-02T09:25:51Z

On do, 2015-07-02 at 11:01 +0200, Paul Bolle wrote:
> I'm just guessing here. Anyhow, you might start by looking at this
> snippet in zconf.l:
> . {
> unput(yytext[0]);
> BEGIN(COMMAND);
> }
>
>
> <COMMAND>{
> {n}+ {
> [...]
> }
> .
> \n {
> BEGIN(INITIAL);
> current_file->lineno++;
> return T_EOL;
> }
> }
>
> Which perhaps translates to:
> - ignore unknown stuff for now and go in COMMAND state;
> - do something if we encounter some text ({n} = [A-Za-z0-9_]);
> - go in INITIAL state if we encounter newlines or unknown stuff.
>
> At the end of which we're back where we started before encountering
> the'+'. But there are more references to '.' in the lex rules so it's
> probably more complicated.

All of which is moot after commit 2e0d737fc76f ("kconfig: don't silently
ignore unhandled characters"). That's in linux-next but not (yet) in
v4.1+. It even has my Ack! My memory really must be degrading now...

Paul Bolle