In perl.git, the branch blead has been updated
<http://perl5.git.perl.org/perl.git/commitdiff/da2f94c54905de8d600063fdd63a3a6b76d27616?hp=a5b92898b77edcbff06468ccf67150e50d1703e4>
- Log -----------------------------------------------------------------
commit da2f94c54905de8d600063fdd63a3a6b76d27616
Author: Father Chrysostomos <spr...@cpan.org>
Date: Mon Oct 4 08:33:31 2010 -0700
perlop.pod: Clarify -âs string/number distinction
M pod/perlop.pod
commit 94824daa35eb9acedff60f3e3d5098b75407327b
Author: Father Chrysostomos <spr...@cpan.org>
Date: Mon Oct 4 08:29:12 2010 -0700
perldelta for [perl #57706]
M pod/perldelta.pod
-----------------------------------------------------------------------
Summary of changes:
pod/perldelta.pod | 6 ++++++
pod/perlop.pod | 11 ++++++-----
2 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/pod/perldelta.pod b/pod/perldelta.pod
index bfe0eb4..ef58531 100644
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -125,6 +125,12 @@ longer inherit directory handles from their parent
threads. Such programs
would probably have crashed anyway
L<[perl #75154]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=75154>.
+=head2 Negation treats strings differently from before
+
+The unary negation operator C<-> now treats strings that look like numbers
+as numbers
+L<[perl #57706]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=57706>.
+
=head1 Deprecations
XXX Any deprecated features, syntax, modules etc. should be listed here.
diff --git a/pod/perlop.pod b/pod/perlop.pod
index c99f672..707df4a 100644
--- a/pod/perlop.pod
+++ b/pod/perlop.pod
@@ -194,11 +194,12 @@ Unary "!" performs logical negation, i.e., "not". See
also C<not> for a lower
precedence version of this.
X<!>
-Unary "-" performs arithmetic negation if the operand is numeric. If
-the operand is an identifier, a string consisting of a minus sign
-concatenated with the identifier is returned. Otherwise, if the string
-starts with a plus or minus, a string starting with the opposite sign
-is returned. One effect of these rules is that -bareword is equivalent
+Unary "-" performs arithmetic negation if the operand is numeric,
+including any string that looks like a number. If the operand is
+an identifier, a string consisting of a minus sign concatenated
+with the identifier is returned. Otherwise, if the string starts
+with a plus or minus, a string starting with the opposite sign is
+returned. One effect of these rules is that -bareword is equivalent
to the string "-bareword". If, however, the string begins with a
non-alphabetic character (excluding "+" or "-"), Perl will attempt to convert
the string to a numeric and the arithmetic negation is performed. If the
--
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