Change 30150 by [EMAIL PROTECTED] on 2007/02/06 22:33:23
Subject: [PATCH] perlop.pod - proposal to add an explanation of \c
From: "Wolfgang Laun" <[EMAIL PROTECTED]>
Date: Sat, 3 Feb 2007 16:23:48 +0100
Message-ID: <[EMAIL PROTECTED]>
Affected files ...
... //depot/perl/pod/perlop.pod#160 edit
Differences ...
==== //depot/perl/pod/perlop.pod#160 (text) ====
Index: perl/pod/perlop.pod
--- perl/pod/perlop.pod#159~29831~ 2007-01-15 08:26:17.000000000 -0800
+++ perl/pod/perlop.pod 2007-02-06 14:33:23.000000000 -0800
@@ -962,14 +962,22 @@
\b backspace (BS)
\a alarm (bell) (BEL)
\e escape (ESC)
- \033 octal char (ESC)
- \x1b hex char (ESC)
- \x{263a} wide hex char (SMILEY)
- \c[ control char (ESC)
+ \033 octal char (example: ESC)
+ \x1b hex char (example: ESC)
+ \x{263a} wide hex char (example: SMILEY)
+ \c[ control char (example: ESC)
\N{name} named Unicode character
+The character following C<\c> is mapped to some other character by
+converting letters to upper case and then (on ASCII systems) by inverting
+the 7th bit (0x40). The most interesting range is from '@' to '_'
+(0x40 through 0x5F), resulting in a control character from 0x00
+through 0x1F. A '?' maps to the DEL character. On EBCDIC systems only
+'@', the letters, '[', '\', ']', '^', '_' and '?' will work, resulting
+in 0x00 through 0x1F and 0x7F.
+
B<NOTE>: Unlike C and other languages, Perl has no \v escape sequence for
-the vertical tab (VT - ASCII 11).
+the vertical tab (VT - ASCII 11), but you may use C<\ck> or C<\x0b>.
The following escape sequences are available in constructs that interpolate
but not in transliterations.
End of Patch.
