An optimisation to the MRO code, by Brandon Black,

[perl5.git] / pod / perlop.pod

diff --git a/pod/perlop.pod b/pod/perlop.pod
index 411414c..e02ad41 100644 (file)
--- a/pod/perlop.pod
+++ b/pod/perlop.pod
@@ -1056,11 +1056,15 @@ This operator quotes (and possibly compiles) its I<STRING> as a regular
 expression.  I<STRING> is interpolated the same way as I<PATTERN>
 in C<m/PATTERN/>.  If "'" is used as the delimiter, no interpolation
 is done.  Returns a Perl value which may be used instead of the
-corresponding C</STRING/imosx> expression.
+corresponding C</STRING/imosx> expression. The returned value is a
+normalized version of the original pattern. It magically differs from
+a string containing the same characters: ref(qr/x/) returns "Regexp",
+even though dereferencing the result returns undef.
 
 For example,
 
     $rex = qr/my.STRING/is;
+    print $rex;                 # prints (?si-xm:my.STRING)
     s/$rex/foo/;
 
 is equivalent to