perlartistic and perlgpl reformatting from Sean Burke.

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

diff --git a/pod/perlsyn.pod b/pod/perlsyn.pod
index 0d81b24..1b5a6a9 100644 (file)
--- a/pod/perlsyn.pod
+++ b/pod/perlsyn.pod
@@ -134,6 +134,13 @@ For C<last>, you have to be more elaborate:
            } while $x++ <= $z;
     }
 
+B<NOTE:> The behaviour of a C<my> statement modified with a statement
+modifier conditional or loop construct (e.g. C<my $x if ...>) is
+B<undefined>.  The value of the C<my> variable may be C<undef>, any
+previously assigned value, or possibly anything else.  Don't rely on
+it.  Future versions of perl might do something different from the
+version of perl you try it out on.  Here be dragons.
+
 =head2 Compound statements
 
 In Perl, a sequence of statements that defines a scope is called a block.
@@ -308,6 +315,14 @@ hang.
        # do something
     }
 
+Using C<readline> (or the operator form, C<< <EXPR> >>) as the
+conditional of a C<for> loop is shorthand for the following.  This
+behaviour is the same as a C<while> loop conditional.
+
+    for ( prompt(); defined( $_ = <STDIN> ); prompt() ) {
+        # do something
+    }
+
 =head2 Foreach Loops
 
 The C<foreach> loop iterates over a normal list value and sets the