[Bug] %ignorecase ignored by chars class definition [sf#57]

[lsf37]

*Reported by anonymous on 2003-06-10 06:50 UTC
JLex generated lexer parses string "aEiU" with following
lexer definition

%%

%ignorecase

VOWEL=[aeiouy]

%%

{VOWEL}+ { return 2; }

but JFlex generated parser fails, because it doesn't
properly handles character class definition with respect
to case sensitivity.

Osvaldas

[lsf37]

Commented by lsf37 on 2003-06-10 10:26 UTC
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user_id=93534

I'm tempted to say that this is not a bug, but a feature.
As specified in the manual, %ignorecase should not work on
character classes.

The problem is that %ignorecase in JFlex is older than the
same option in JLex and JLex behaves differently. If I now
change %ignorecase to the JLex behaviour existing JFLex
specifications might no longer work.

I will propably add a command line switch --jlex or
something similar to force the JLex behaviour. This way
you can choose what you like better, and it might also be
useful for other JLex issues.

Gerwin

[lsf37]

Updated by lsf37 on 2003-06-10 10:26 UTC

• milestone: 104412 --> jlex incompatibility

[lsf37]

Updated by lsf37 on 2004-04-12 12:26 UTC

• status: open --> closed