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Diffstat (limited to 'pod/perlre.pod')
| -rw-r--r-- | pod/perlre.pod | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/pod/perlre.pod b/pod/perlre.pod index 295b6bd518..2f2d79b492 100644 --- a/pod/perlre.pod +++ b/pod/perlre.pod @@ -19,12 +19,13 @@ in question might not actually be a slash. In fact, any of these modifiers may also be embedded within the regular expression itself using the new C<(?...)> construct. See below. -The C</x> modifier itself needs a little more explanation. It tells the -regular expression parser to ignore whitespace that is not backslashed -or within a character class. You can use this to break up your regular -expression into (slightly) more readable parts. Together with the -capability of embedding comments described later, this goes a long -way towards making Perl 5 a readable language. See the C comment +The C</x> modifier itself needs a little more explanation. It tells +the regular expression parser to ignore whitespace that is not +backslashed or within a character class. You can use this to break up +your regular expression into (slightly) more readable parts. The C<#> +character is also treated as a metacharacter introducing a comment, +just as in ordinary Perl code. Taken together, these features go a +long way towards making Perl 5 a readable language. See the C comment deletion code in L<perlop>. =head2 Regular Expressions @@ -147,7 +148,7 @@ When the bracketing construct C<( ... )> is used, \<digit> matches the digit'th substring. (Outside of the pattern, always use "$" instead of "\" in front of the digit. The scope of $<digit> (and C<$`>, C<$&>, and C<$')> extends to the end of the enclosing BLOCK or eval string, or to the -next pattern match with subexpressions. +next successful pattern match, whichever comes first. If you want to use parentheses to delimit subpattern (e.g. a set of alternatives) without saving it as a subpattern, follow the ( with a ?. |