PATCH: shorthand for splitting on null bytes.

PATCH: shorthand for splitting on null bytes.

[Peter Stephenson]

I've been missing this.  Any comments?  Is a shorthand for joining
things together with nulls useful?

Index: Doc/Zsh/expn.yo
===================================================================
RCS file: /cvsroot/zsh/zsh/Doc/Zsh/expn.yo,v
retrieving revision 1.63
diff -u -r1.63 expn.yo
--- Doc/Zsh/expn.yo	20 Mar 2006 11:06:25 -0000	1.63
+++ Doc/Zsh/expn.yo	22 Mar 2006 12:01:17 -0000
@@ -826,6 +826,10 @@
 in `tt(${${(z)foo}[2]})'. Likewise, to remove the quotes in the
 resulting words one would do: `tt(${(Q)${(z)foo}})'.
 )
+item(tt(0))(
+Split the result of the expansion on null bytes.  This is a shorthand
+for `tt(ps:\0:)'.
+)
 enditem()
 
 The following flags (except tt(p)) are followed by one or more arguments
Index: Src/subst.c
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/subst.c,v
retrieving revision 1.49
diff -u -r1.49 subst.c
--- Src/subst.c	7 Mar 2006 22:05:51 -0000	1.49
+++ Src/subst.c	22 Mar 2006 12:01:18 -0000
@@ -1274,6 +1274,13 @@
 		    sep = "\n";
 		    break;
 
+		case '0':
+		    spsep = zhalloc(3);
+		    spsep[0] = Meta;
+		    spsep[1] = ' ';
+		    spsep[2] = '\0';
+		    break;
+
 		case 's':
 		    tt = 1;
 		/* fall through */

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK                          Tel: +44 (0)1223 692070


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Re: PATCH: shorthand for splitting on null bytes.

[Wayne Davison]

On Wed, Mar 22, 2006 at 12:06:54PM +0000, Peter Stephenson wrote:
> Any comments?

Just a comment on the obfuscationality :-) of one line in your patch:

> +		    spsep[0] = Meta;
> +		    spsep[1] = ' ';

I'd rather see that last line be "spsep[1] = '\0' ^ 32;" because that
makes the value a little clearer (the end result is obviously the same).

..wayne..