perlop: Mention the word diamond wrt <>, <<>>

There really is no pod that refers to the common names of these
operators.

diff --git a/pod/perlop.pod b/pod/perlop.pod
index 3e6c10f..4b895d9 100644 (file)
--- a/pod/perlop.pod
+++ b/pod/perlop.pod
@@ -3375,7 +3375,8 @@ way, so use with care.
 C<< <I<FILEHANDLE>> >>  may also be spelled C<readline(*I<FILEHANDLE>)>.
 See L<perlfunc/readline>.
 
 C<< <I<FILEHANDLE>> >>  may also be spelled C<readline(*I<FILEHANDLE>)>.
 See L<perlfunc/readline>.
 

-The null filehandle C<< <> >> is special: it can be used to emulate the
+The null filehandle C<< <> >> (sometimes called the diamond operator) is
+special: it can be used to emulate the

 behavior of B<sed> and B<awk>, and any other Unix filter program
 that takes a list of filenames, doing the same to each line
 of input from all of them.  Input from C<< <> >> comes either from
 behavior of B<sed> and B<awk>, and any other Unix filter program
 that takes a list of filenames, doing the same to each line
 of input from all of them.  Input from C<< <> >> comes either from


@@ -3416,7 +3417,8 @@ it interprets special characters, so if you have a script like this:
 and call it with S<C<perl dangerous.pl 'rm -rfv *|'>>, it actually opens a
 pipe, executes the C<rm> command and reads C<rm>'s output from that pipe.
 If you want all items in C<@ARGV> to be interpreted as file names, you
 and call it with S<C<perl dangerous.pl 'rm -rfv *|'>>, it actually opens a
 pipe, executes the C<rm> command and reads C<rm>'s output from that pipe.
 If you want all items in C<@ARGV> to be interpreted as file names, you

-can use the module C<ARGV::readonly> from CPAN, or use the double bracket:
+can use the module C<ARGV::readonly> from CPAN, or use the double
+diamond bracket:

 
     while (<<>>) {
         print;
 
     while (<<>>) {
         print;