Author: larry
Date: Thu Oct 5 11:16:58 2006
New Revision: 12736
Modified:
doc/trunk/design/syn/S04.pod
Log:
Removed hash composers from line-ending curly rule entirely. Now a parsefail.
Modified: doc/trunk/design/syn/S04.pod
==============================================================================
--- doc/trunk/design/syn/S04.pod (original)
+++ doc/trunk/design/syn/S04.pod Thu Oct 5 11:16:58 2006
@@ -12,9 +12,9 @@
Maintainer: Larry Wall <[EMAIL PROTECTED]>
Date: 19 Aug 2004
- Last Modified: 26 Sep 2006
+ Last Modified: 5 Sep 2006
Number: 4
- Version: 41
+ Version: 42
This document summarizes Apocalypse 4, which covers the block and
statement syntax of Perl.
@@ -138,11 +138,14 @@
sub { 3 } # the statement won't terminate here
];
-However, a nested hash block must be disambiguated by a trailing comma:
+However, a hash composer may never occur at the end of a line. If the
+parser sees anything that looks like a hash composer at the end of
+the line, it fails with "closing hash curly may not terminate line"
+or some such.
- # Without the trailing comma, this becomes a code block
my $hash = {
- 1 => { 2 => 3, 4 => 5 },
+ 1 => { 2 => 3, 4 => 5 }, # OK
+ 2 => { 6 => 7, 8 => 9 } # ERROR
};
Because subroutine declarations are expressions, not statements,
