Re: Feature request - keyword expansion

[John Millaway]

> %%
> keyword  { return KEYWORD; }
> 
> Therefor I would suggest a set of macors like:
> 
> %key(KeyWord,...)             // Keyword
> %lkey(KeyWord,...)    // Lowercase keyword
> %ukey(KeyWord,...)    // Uppercase keyword
> %olkey(KeyWord,...)   // optional lowercase keyword
> %oukey(KeyWord,...)   // optional upercase keyword


To be clear, what you're suggesting is a macro preprocessor for flex. This
brings several questions to mind: Where will the new rules be inserted? In
which start conditions? With what precedence? Why do you want to separately
distinguish uppercase from lowercase keywords? How do you propose we handle
false positives if we generalize the rules to avoid backing up? Example:

%key(foo,bar)
%%
[abfor]+  ; // false positives are fao, boo, bor,...


-John


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