ports/165354: shell - incorrect pipeline processing

[jb]

>Number:         165354
>Category:       ports
>Synopsis:       shell - incorrect pipeline processing
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Feb 21 09:40:11 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     jb
>Release:        9.0-RELEASE #0
>Organization:
>Environment:
FreeBSD localhost.localdomain 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan  3 07:15:25 UTC 2012     root at obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386

>Description:
Example:
Why the other ps entry does not display cron ?

$ top
..
  PID USERNAME    THR PRI NICE   SIZE    RES STATE   C   TIME   WCPU COMMAND
 1897 root          1  20    0  9644K  1208K nanslp  0   0:03  0.00% cron
..

$ ps -ax |grep cron
 1897  ??  Is      0:03.16 /usr/sbin/cron -s
62278   1  S+      0:00.01 grep cron

$ ps -aux |grep cron
$

man ps
    -x      When displaying processes matched by other options, include pro-
             cesses which do not have a controlling terminal.

That happens because the cron command is truncated.

The same entry and its output on randomly larger (column-wise) terminal:

$ ps -aux |grep cron
root        1897   0.0  0.1   9644   1208  ??  Is   Thu12PM     0:05.45 /usr/sbin/cron -s
jb         32411   0.0  0.1   9748   1124   2  S+   10:19AM     0:00.00 grep cron

I think the current application of terminal window size is incorrect.

$ env |grep -i shell
SHELL=/usr/local/bin/bash
$ pkg_info -W bash
/usr/local/bin/bash was installed by package bash-4.1.11

Shell pipeline:
command1 | command2

Right now it is:
command1 -> fd (stdout) -> win size "filter" -> | -> command2 -> display
It should be:
command1 -> fd (stdout) -> | -> command2 -> fd (stdout) -> win size "filter" -> display

>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: