Move prototype parsing related warnings from the 'syntax' top level warnings category...

[p5sagit/p5-mst-13.2.git] / pod / perlre.pod

diff --git a/pod/perlre.pod b/pod/perlre.pod
index 7127de0..529c44a 100644 (file)
--- a/pod/perlre.pod
+++ b/pod/perlre.pod
@@ -1035,6 +1035,12 @@ The following pattern matches a parenthesized group:
 See also C<(?PARNO)> for a different, more efficient way to accomplish
 the same task.
 
+For reasons of security, this construct is forbidden if the regular
+expression involves run-time interpolation of variables, unless the
+perilous C<use re 'eval'> pragma has been used (see L<re>), or the
+variables contain results of C<qr//> operator (see
+L<perlop/"qr/STRING/imosx">).
+
 Because perl's regex engine is not currently re-entrant, delayed
 code may not invoke the regex engine either directly with C<m//> or C<s///>),
 or indirectly with functions such as C<split>.
@@ -1344,7 +1350,7 @@ otherwise stated the ARG argument is optional; in some cases, it is
 forbidden.
 
 Any pattern containing a special backtracking verb that allows an argument
-has the special behaviour that when executed it sets the current packages'
+has the special behaviour that when executed it sets the current package's
 C<$REGERROR> and C<$REGMARK> variables. When doing so the following
 rules apply:
 
@@ -1465,8 +1471,7 @@ This zero-width pattern can be used to mark the point reached in a string
 when a certain part of the pattern has been successfully matched. This
 mark may be given a name. A later C<(*SKIP)> pattern will then skip
 forward to that point if backtracked into on failure. Any number of
-C<(*MARK)> patterns are allowed, and the NAME portion is optional and may
-be duplicated.
+C<(*MARK)> patterns are allowed, and the NAME portion may be duplicated.
 
 In addition to interacting with the C<(*SKIP)> pattern, C<(*MARK:NAME)>
 can be used to "label" a pattern branch, so that after matching, the