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Re: Proposed patch - psql wraps at window width

From: Bryce Nesbitt <bryce2(at)obviously(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Cc: Bruce Momjian <bruce(at)momjian(dot)us>, Gregory Stark <stark(at)enterprisedb(dot)com>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Brendan Jurd <direvus(at)gmail(dot)com>, heikki(at)enterprisedb(dot)com
Subject: Re: Proposed patch - psql wraps at window width
Date: 2008-04-28 01:38:05
Message-ID: 48152A7D.70104@obviously.com (view raw or flat)
Thread:
Lists: pgsql-hackers

Tom Lane wrote:
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
>   
>> I don't see that behavior here on Ubuntu 7.10:
>> 	$ COLUMNNS=120 ls -C |cat
>> 	archive       cd    initrd      lost+found  proc  srv  usr
>> 	basement.usr  dev   initrd.img  media       root  sys  var
>> 	bin           etc   laptop      mnt         rtmp  tmp  vmlinuz
>> 	boot          home  lib         opt         sbin  u    win
>> 	$ ls --version
>> 	ls (GNU coreutils) 5.97
>>     
> Well, it's *certainly* gonna ignore "COLUMNNS".
>
> 			regards, tom lane
>   
I'm having trouble seeing the relevance, either way.  First many shells 
don't set $COLUMNS at all (readline does it for psql).  And most shells 
that set $COLUMNS don't export it.  So most people get different output 
from:

 # ls -C
 # ls -C | cat

Unless they are in the habit of doing:

 # COLUMNS=$COLUMNS ls -C |cat

I think it's too weird to default pipes to whatever the terminal width 
happens to be.  So that leaves you with an explicit command to set the 
width for pipes.

                                        -Bryce


Echo $MANWIDTH


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