Re: Portable upper/lower case regexp matches
Peter Scott wrote: Perl 5.6.0 has [[:lower:]] and [[:upper:]]. Yes, but this one is worth a digraph. Question is, which one? Currently the free ones are: \F \h \H \i \I \j \J \k \K \m \M \o \O \q \R \T \v \V \y \Y \v \V are being debated on p5p currently. I suggest \i \I, mnemonic with ?:i and /i. I agree. I also think that a web page with a big table of unresolvables and simple (and uncontrolled) vote tallies would be a good thing. Something like Unresolvable AgreeDisagree Dontcare -- All remaining simple300521 10 digraph letters should be [ ][ ] [ ] [opine] conserved -- Quebeq should secede from 20 71 320 the United States [ ][ ] [ ] [opine] --- with a blank at the bottom for suggesting new unresolvables. I bet that at least a twentieth of the people who will read this could set this system up in about the same amount of time that I spent writing this "me too." -- David Nicol 816.235.1187 [EMAIL PROTECTED] :wq
Re: Portable upper/lower case regexp matches
On Thu, 10 Aug 2000 17:21:44 +0300, Jason Elbaum wrote: \x match lowercase alpha char \X match uppercase alpha char Thus /\X\x*/ would match all capitalized words, while /\X+/ would match acronyms, and /(\X\x+)+/ would match Java class names. You've got my vote, apart from one tiny detail: \x is already in use. It allows you to specify character codes in hex, just like "\012" is in octal. $_ = "a\tb"; $_ = "a\tb"; print join '#', split /\x09/; -- a#b Getting a feature like this accepted, should be rather trivial. -- Bart.
Re: Portable upper/lower case regexp matches
On Thu, Aug 10, 2000 at 05:21:44PM +0300, Jason Elbaum wrote: As far as I know, there is a basic bit of regexp functionality which Perl should support but doesn't. Perl regexps support the following features, though they're a bit obscure to my tastes... (from perlre:) \l lowercase next char (think vi) \u uppercase next char (think vi) \L lowercase till \E (think vi) \U uppercase till \E (think vi) \E end case modification (think vi) ...but Perl doesn't offer a regexp pattern to match all alphabetical characters of a particular case. Something like: \x match lowercase alpha char \X match uppercase alpha char Thus /\X\x*/ would match all capitalized words, while /\X+/ would match acronyms, and /(\X\x+)+/ would match Java class names. Perl 5.6.0 has [[:lower:]] and [[:upper:]]. -- $jhi++; # http://www.iki.fi/jhi/ # There is this special biologist word we use for 'stable'. # It is 'dead'. -- Jack Cohen
Re: Portable upper/lower case regexp matches
Jason Elbaum [EMAIL PROTECTED] writes:
Perl regexps support the following features, though they're a bit
obscure to my tastes...
(from perlre:)
\l lowercase next char (think vi)
Actually, this has little to do with regexes, it a string issue.
...but Perl doesn't offer a regexp pattern to match all alphabetical
characters of a particular case. Something like:
\x match lowercase alpha char
\X match uppercase alpha char
Well, take your pick:
[:lower:] and [:upper](POSIX, e.g., /[[:islower:]]+/)
\p{IsLower} and \p{IsUpper} (UNICODE, e.g., /\p{IsLower}+/)
It's all in 5.6. See PP3, pp 167 and up.
-- Johan
Re: Portable upper/lower case regexp matches
At 10:28 AM 8/10/00 -0500, Jarkko Hietaniemi wrote: On Thu, Aug 10, 2000 at 05:21:44PM +0300, Jason Elbaum wrote: As far as I know, there is a basic bit of regexp functionality which Perl should support but doesn't. Perl regexps support the following features, though they're a bit obscure to my tastes... (from perlre:) \l lowercase next char (think vi) \u uppercase next char (think vi) \L lowercase till \E (think vi) \U uppercase till \E (think vi) \E end case modification (think vi) ...but Perl doesn't offer a regexp pattern to match all alphabetical characters of a particular case. Something like: \x match lowercase alpha char \X match uppercase alpha char Thus /\X\x*/ would match all capitalized words, while /\X+/ would match acronyms, and /(\X\x+)+/ would match Java class names. Perl 5.6.0 has [[:lower:]] and [[:upper:]]. Yes, but this one is worth a digraph. Question is, which one? Currently the free ones are: \F \h \H \i \I \j \J \k \K \m \M \o \O \q \R \T \v \V \y \Y \v \V are being debated on p5p currently. I suggest \i \I, mnemonic with ?:i and /i. I know it's a strange association once you think about it, but it made sense at first thought. -- Peter Scott Pacific Systems Design Technologies
Re: Portable upper/lower case regexp matches
On Thu, Aug 10, 2000 at 08:55:27AM -0700, Peter Scott wrote: At 10:28 AM 8/10/00 -0500, Jarkko Hietaniemi wrote: On Thu, Aug 10, 2000 at 05:21:44PM +0300, Jason Elbaum wrote: As far as I know, there is a basic bit of regexp functionality which Perl should support but doesn't. Perl regexps support the following features, though they're a bit obscure to my tastes... (from perlre:) \l lowercase next char (think vi) \u uppercase next char (think vi) \L lowercase till \E (think vi) \U uppercase till \E (think vi) \E end case modification (think vi) ...but Perl doesn't offer a regexp pattern to match all alphabetical characters of a particular case. Something like: \x match lowercase alpha char \X match uppercase alpha char Thus /\X\x*/ would match all capitalized words, while /\X+/ would match acronyms, and /(\X\x+)+/ would match Java class names. Perl 5.6.0 has [[:lower:]] and [[:upper:]]. Yes, but this one is worth a digraph. Question is, which one? Currently the free ones are: Hardly. I beg to differ. We have enough magical digraphs as it is. Let's save what we have for metamarkers, such as \v\V, not for character classes.. -- $jhi++; # http://www.iki.fi/jhi/ # There is this special biologist word we use for 'stable'. # It is 'dead'. -- Jack Cohen
