In perl.git, the branch briandfoy/perlvar has been updated
<http://perl5.git.perl.org/perl.git/commitdiff/35bf1ac65b36230457b561d74a25a61e7f877a47?hp=1f10664710ccd5907e42fd930c53bc9ec2a4bc7f>
- Log -----------------------------------------------------------------
commit 35bf1ac65b36230457b561d74a25a61e7f877a47
Author: brian d foy <brian.d....@gmail.com>
Date: Thu Sep 16 11:37:56 2010 -0500
* mjd rewrites the $", cleans up minor bits
-----------------------------------------------------------------------
Summary of changes:
pod/perlvar.pod | 24 ++++++++++++++++--------
1 files changed, 16 insertions(+), 8 deletions(-)
diff --git a/pod/perlvar.pod b/pod/perlvar.pod
index f786d12..4ebe03a 100644
--- a/pod/perlvar.pod
+++ b/pod/perlvar.pod
@@ -47,7 +47,7 @@ exempt in these ways:
ARGVOUT _
SIG
-In particular, the new special C<${^_XYZ}> variables are always taken
+In particular, the special C<${^_XYZ}> variables are always taken
to be in package C<main>, regardless of any C<package> declarations
presently in scope.
@@ -198,9 +198,17 @@ Mnemonic: comma (the syntactic subscript separator) is a
semi-semicolon.
=item $"
X<$"> X<$LIST_SEPARATOR>
-This is like C<$,> except that it applies to array and slice values
-interpolated into a double-quoted string (or similar interpreted
-string). Default is a space. (Mnemonic: obvious, I think.)
+When an array or an array slice is interpolated into a double-quoted
+string or a similar context such as C</.../>, its elements are
+separated by this value. Default is a space. For example, this:
+
+ print "The array is: @array\n";
+
+is equivalent to this:
+
+ print "The array is: " . join($", @array) . "\n";
+
+Mnemonic: works in double-quoted context.
=item ${^ENCODING}
X<$^ENCODING>
@@ -254,8 +262,8 @@ X<< $> >> X<$EUID> X<$EFFECTIVE_USER_ID>
The effective uid of this process. For example:
- $< = $>; # set real to effective uid
- ($<,$>) = ($>,$<); # swap real and effective uid
+ $< = $>; # set real to effective uid
+ ($<,$>) = ($>,$<); # swap real and effective uids
You can change both the effective uid and the real uid at the same
time by using C<POSIX::setuid()>. Changes to C<< $> >> require a check
@@ -331,14 +339,14 @@ X<$0> X<$PROGRAM_NAME>
Contains the name of the program being executed.
-On some (read: not all) operating systems assigning to C<$0> modifies
+On some (but not all) operating systems assigning to C<$0> modifies
the argument area that the C<ps> program sees. On some platforms you
may have to use special C<ps> options or a different C<ps> to see the
changes. Modifying the C<$0> is more useful as a way of indicating the
current program state than it is for hiding the program you're
running.
-Note that there are platform specific limitations on 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>.
--
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