diff options
| -rw-r--r-- | pod/perlop.pod | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/pod/perlop.pod b/pod/perlop.pod index 046b616e8b..3a33bb4681 100644 --- a/pod/perlop.pod +++ b/pod/perlop.pod @@ -1328,8 +1328,10 @@ Options (specified by the following modifiers) are: that ${^PREMATCH}, ${^MATCH}, ${^POSTMATCH} will be defined. o Compile pattern only once. l Use the locale - u Use Unicode semantics - a Use ASCII for \d, \s, \w + u Use Unicode rules + a Use ASCII for \d, \s, \w; specifying two a's further restricts + /i matching so that no ASCII character will match a non-ASCII + one d Use Unicode or native charset, as in 5.12 and earlier If a precompiled pattern is embedded in a larger pattern then the effect @@ -1338,11 +1340,11 @@ modifier has is not propagated, being restricted to those patterns explicitly using it. The last four modifiers listed above, added in Perl 5.14, -control the character set semantics. They are documented in -L<perlre/Modifiers>. +control the character set semantics. See L<perlre> for additional information on valid syntax for STRING, and -for a detailed look at the semantics of regular expressions. +for a detailed look at the semantics of regular expressions. In +particular, all the modifiers are further explained in L<perlre/Modifiers>. =item m/PATTERN/msixpodualgc X<m> X<operator, match> @@ -1385,7 +1387,7 @@ the trailing delimiter. This avoids expensive run-time recompilations, and is useful when the value you are interpolating won't change over the life of the script. However, mentioning C</o> constitutes a promise that you won't change the variables in the pattern. If you change them, -Perl won't even notice. See also L<"qr/STRING/msixpodual">. +Perl won't even notice. =item The empty pattern // |