On 7/31/07, Nevada <[EMAIL PROTECTED]> wrote:
> Hello,
>
> In the Perl Cookbook recipe 1.14 - "Properly Capitalizing a Title or
> Headline" I see this substitution:
>
> s/(\pL[\pL']*)/$nocap{$1} ? lc($1) : ucfirst(lc($1))/ge;
>
> if a word appears in the nocap hash, it is made lower case. the \pL
> matches a lower case character but what is [\pL']?
>
> Thanks,
>
> NS
It appears to match a Unicode letter character.
from perldoc perlre
\pP Match P, named property. Use \p{Prop} for longer names.
see perlunicode for more details about "\pP", "\PP", and "\X", and per�\
luniintro about Unicode in general. You can define your own "\p" and
"\P" properties, see perlunicode.
from perldoc perlunicode
・ Named Unicode properties, scripts, and block ranges may be used
like character classes via the "\p{}" "matches property" construct
and the "\P{}" negation, "doesn't match property".
For instance, "\p{Lu}" matches any character with the Unicode "Lu"
(Letter, uppercase) property, while "\p{M}" matches any character
with an "M" (mark--accents and such) property. Brackets are not
required for single letter properties, so "\p{M}" is equivalent to
"\pM". Many predefined properties are available, such as "\p{Mir�\
rored}" and "\p{Tibetan}".
Here are the basic Unicode General Category properties, followed by
their long form. You can use either; "\p{Lu}" and "\p{Uppercase�\
Letter}", for instance, are identical.
Short Long
L Letter
LC CasedLetter
Lu UppercaseLetter
Ll LowercaseLetter
Lt TitlecaseLetter
Lm ModifierLetter
Lo OtherLetter
M Mark
Mn NonspacingMark
Mc SpacingMark
Me EnclosingMark
N Number
Nd DecimalNumber
Nl LetterNumber
No OtherNumber
P Punctuation
Pc ConnectorPunctuation
Pd DashPunctuation
Ps OpenPunctuation
Pe ClosePunctuation
Pi InitialPunctuation
(may behave like Ps or Pe depending on usage)
Pf FinalPunctuation
(may behave like Ps or Pe depending on usage)
Po OtherPunctuation
S Symbol
Sm MathSymbol
Sc CurrencySymbol
Sk ModifierSymbol
So OtherSymbol
Z Separator
Zs SpaceSeparator
Zl LineSeparator
Zp ParagraphSeparator
C Other
Cc Control
Cf Format
Cs Surrogate (not usable)
Co PrivateUse
Cn Unassigned
Single-letter properties match all characters in any of the two-
letter sub-properties starting with the same letter. "LC" and "L&"
are special cases, which are aliases for the set of "Ll", "Lu", and
"Lt".
