parsing options

[Greg Louis]

On 20030515 (Thu) at 1128:28 -0400, Clint Adams wrote:
> > -Pu, -PU upper_case
> > 
> > For the switches, a lower case letter enables the option (turns it on) and 
> > an upper case letter disables it (turns it off).
> 
> > Note 2:  Option '-Pu' makes bogofilter case insensitive, which is the way 
> > bogofilter has operated since day 1.  With "-Pu", words "test", "Test", and 
> > "TEST" are all converted to "test".  All the recent tests of case folding 
> > (or not folding) indicate that doing changing upper case to lower case is 
> > really, really bad.
> 
> Enabling "upper_case" makes it case-insensitive?  Seems much more
> confusing than -Pf and -PF to me.
> 

Yep.  That "upper_case" terminology is a serious misnomer; the
distinction is not between upper and lower, but between case-sensitive
and case-insensitive.  I thought folding was a much more descriptive
term.

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