=item $,
-The output field separator for the print operator. Ordinarily the
-print operator simply prints out its arguments without further
-adornment. To get behavior more like B<awk>, set this variable as
-you would set B<awk>'s OFS variable to specify what is printed
-between fields. (Mnemonic: what is printed when there is a "," in
-your print statement.)
+The output field separator for the print operator. If defined, this
+value is printed between each of print's arguments. Default is C<undef>.
+(Mnemonic: what is printed when there is a "," in your print statement.)
=item IO::Handle->output_record_separator EXPR
=item $\
-The output record separator for the print operator. Ordinarily the
-print operator simply prints out its arguments as is, with no
-trailing newline or other end-of-record string added. To get
-behavior more like B<awk>, set this variable as you would set
-B<awk>'s ORS variable to specify what is printed at the end of the
-print. (Mnemonic: you set C<$\> instead of adding "\n" at the
-end of the print. Also, it's just like C<$/>, but it's what you
-get "back" from Perl.)
+The output record separator for the print operator. If defined, this
+value is printed after the last of print's arguments. Default is C<undef>.
+(Mnemonic: you set C<$\> instead of adding "\n" at the end of the print.
+Also, it's just like C<$/>, but it's what you get "back" from Perl.)
=item $LIST_SEPARATOR
Consider using "real" multidimensional arrays as described
in L<perllol>.
-=item $#
-
-The output format for printed numbers. This variable is a half-hearted
-attempt to emulate B<awk>'s OFMT variable. There are times, however,
-when B<awk> and Perl have differing notions of what counts as
-numeric. The initial value is "%.I<n>g", where I<n> is the value
-of the macro DBL_DIG from your system's F<float.h>. This is different from
-B<awk>'s default OFMT setting of "%.6g", so you need to set C<$#>
-explicitly to get B<awk>'s value. (Mnemonic: # is the number sign.)
-
-Use of C<$#> is deprecated.
-
=item HANDLE->format_page_number(EXPR)
=item $FORMAT_PAGE_NUMBER
=item C<$2> is the same as C<substr($var, $-[2], $+[2] - $-[2])>
-=item C<$3> is the same as C<substr $var, $-[3], $+[3] - $-[3])>
+=item C<$3> is the same as C<substr($var, $-[3], $+[3] - $-[3])>
=back
current program state than it is for hiding the program you're
running. (Mnemonic: same as B<sh> and B<ksh>.)
-Note that there are platform specific limitations on the the maximum
+Note that there are platform specific limitations on the maximum
length of C<$0>. In the most extreme case it may be limited to the
space occupied by the original C<$0>.
In multithreaded scripts Perl coordinates the threads so that any
thread may modify its copy of the C<$0> and the change becomes visible
-to ps(1) (assuming the operating system plays along). Note that the
+to ps(1) (assuming the operating system plays along). Note that
the view of C<$0> the other threads have will not change since they
have their own copies of it.
Its use is highly discouraged.
Note that, unlike other compile-time directives (such as L<strict>),
-assignment to $[ can be seen from outer lexical scopes in the same file.
-However, you can use local() on it to strictly bound its value to a
+assignment to C<$[> can be seen from outer lexical scopes in the same file.
+However, you can use local() on it to strictly bind its value to a
lexical block.
=item $]
By default, running out of memory is an untrappable, fatal error.
However, if suitably built, Perl can use the contents of C<$^M>
as an emergency memory pool after die()ing. Suppose that your Perl
-were compiled with -DPERL_EMERGENCY_SBRK and used Perl's malloc.
+were compiled with C<-DPERL_EMERGENCY_SBRK> and used Perl's malloc.
Then
$^M = 'a' x (1 << 16);
would allocate a 64K buffer for use in an emergency. See the
F<INSTALL> file in the Perl distribution for information on how to
-enable this option. To discourage casual use of this advanced
-feature, there is no L<English|English> long name for this variable.
+add custom C compilation flags when compiling perl. To discourage casual
+use of this advanced feature, there is no L<English|English> long name for
+this variable.
=item $OSNAME
the possible values. This variable is set during Perl startup
and is thereafter read-only.
+=item ${^UTF8LOCALE}
+
+This variable indicates whether an UTF-8 locale was detected by perl at
+startup. This information is used by perl when it's in
+adjust-utf8ness-to-locale mode (as when run with the C<-CL> command-line
+switch); see L<perlrun> for more info on this.
+
=item $PERL_VERSION
=item $^V
=item $^X
The name used to execute the current copy of Perl, from C's
-C<argv[0]>.
+C<argv[0]> or (where supported) F</proc/self/exe>.
Depending on the host operating system, the value of $^X may be
a relative or absolute pathname of the perl program file, or may