diff options
Diffstat (limited to 'pod/perlop.pod')
| -rw-r--r-- | pod/perlop.pod | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/pod/perlop.pod b/pod/perlop.pod index a81f7fe8b2..1254948871 100644 --- a/pod/perlop.pod +++ b/pod/perlop.pod @@ -1097,8 +1097,8 @@ Some frequently seen examples: A common mistake is to try to separate the words with comma or to put comments into a multi-line C<qw>-string. For this reason, the -B<-w> switch (that is, the C<$^W> variable) produces warnings if -the STRING contains the "," or the "#" character. +C<use warnings> pragma and the B<-w> switch (that is, the C<$^W> variable) +produces warnings if the STRING contains the "," or the "#" character. =item s/PATTERN/REPLACEMENT/egimosx @@ -1458,8 +1458,8 @@ the result is not predictable. It is at this step that C<\1> is begrudgingly converted to C<$1> in the replacement text of C<s///> to correct the incorrigible I<sed> hackers who haven't picked up the saner idiom yet. A warning -is emitted if the B<-w> command-line flag (that is, the C<$^W> variable) -was set. +is emitted if the C<use warnings> pragma or the B<-w> command-line flag +(that is, the C<$^W> variable) was set. The lack of processing of C<\\> creates specific restrictions on the post-processed text. If the delimiter is C</>, one cannot get @@ -1597,7 +1597,8 @@ to terminate the loop, they should be tested for explicitly: while (<STDIN>) { last unless $_; ... } In other boolean contexts, C<< <I<filehandle>> >> without an -explicit C<defined> test or comparison elicit a warning if the B<-w> +explicit C<defined> test or comparison elicit a warning if the +C<use warnings> pragma or the B<-w> command-line switch (the C<$^W> variable) is in effect. The filehandles STDIN, STDOUT, and STDERR are predefined. (The |