Re: Possible bug in zargs

[Dima Kogan <zsh@xxxxxxxxxxxxxxxxxxxx>]

> On Sat, 27 Oct 2012 15:34:00 -0700
> Dima Kogan <zsh@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> I can't seem to get the -n option in zargs to work right. This looks like a bug
> to me, but maybe I'm not using it correctly:
> 
> dima@shorty:/tmp$ ls -l
> total 12
> -rw-r--r-- 1 dima dima 1 Oct 27 15:29 1
> -rw-r--r-- 1 dima dima 5 Oct 27 15:29 2
> -rw-r--r-- 1 dima dima 5 Oct 27 15:29 3
> 
> 
> dima@shorty:/tmp$ zargs -- * -- ls -l 
> -rw-r--r-- 1 dima dima 1 Oct 27 15:29 1
> -rw-r--r-- 1 dima dima 5 Oct 27 15:29 2
> -rw-r--r-- 1 dima dima 5 Oct 27 15:29 3
> 
> dima@shorty:/tmp$ zargs -- * -- ls   
> 1  2  3
> 
> dima@shorty:/tmp$ zargs -n1 -- * -- ls 
> 1
> 2
> 3
> 
> dima@shorty:/tmp$ zargs -n1 -- * -- ls -l
> zargs: argument list too long


Attached is a patch that fixes this. There was some misbehaving logic in the
script. I don't understand why that logic was ever necessary. Does anybody know
why the value of $n was connected to the value of $c at all?

From b2d0722f78ce1c8effd69119b989a9112cbf5d27 Mon Sep 17 00:00:00 2001
From: Dima Kogan <dima@xxxxxxxxxxxxxxx>
Date: Tue, 30 Oct 2012 00:02:45 -0700
Subject: [PATCH] -n option of zargs now works correctly

Before this patch, the following wouls happen:

dima@shorty:/tmp$ ls
1  2  3

dima@shorty:/tmp$ zargs -n1 -- * -- ls -l
zargs: argument list too long
---
 Functions/Misc/zargs |    9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/Functions/Misc/zargs b/Functions/Misc/zargs
index 71fd428..59b369e 100644
--- a/Functions/Misc/zargs
+++ b/Functions/Misc/zargs
@@ -212,20 +212,13 @@ then
     fi
 fi
 
-n=${${n##-(n|-max-args(=|))}:-$[ARGC+c]}
+n=${${n##-(n|-max-args(=|))}:-$[ARGC]}
 if (( n <= 0 ))
 then
     print -u2 'zargs: value for max-args must be >= 1'
     return 1
 fi
 
-if (( n > c ))
-then (( n -= c ))
-else
-    print -u2 zargs: argument list too long
-    return 1
-fi
-
 s=${${s##-(s|-max-chars(=|))}:-20480}
 if (( s <= 0 ))
 then
-- 
1.7.10.4