*Synopsis*: ksh93 has strange default PS1
CR 6913851 changed on Jan 5 2010 by <User 1-PWPBN>
=== Field ============ === New Value ============= === Old Value =============
Public Comments New Note
Public Comments New Note
====================== =========================== ===========================
*Change Request ID*: 6913851
*Synopsis*: ksh93 has strange default PS1
Product: solaris
Category: shell
Subcategory: korn93
Type: Defect
Subtype:
Status: 1-Dispatched
Substatus:
Priority: 4-Low
Introduced In Release:
Introduced In Build:
Responsible Engineer:
Keywords:
=== *Description* ============================================================
$ env - ksh93
$ echo $PS1
%s" COLUMNS "" printf "%...@%s:" "${LOGNAME}" "$(/usr/bin/hostname)" ellip="${
[[ "${LC_ALL}/${LANG}" == ~(Elr)(.*UTF-8/.*|/.*UTF-8) ]] && printf "\u[2026]
" || print "..." ; }" p="${PWD/~(El)${HOME}/\~}" (( ${#p} > 30 )) && print -r
-n -- "${ellip}${p:${#p}-30:30}" || print -r -n -- "${p}" [[ "${LOGNAME}" ==
"root" ]] && print -n "# " || print -n "\$ " )
$ set | grep PS1
PS1=$'$(set +o xtrace +o errexit\n printf "%*s\\r%s" COLUMNS
""\n printf "%...@%s:" "${LOGNAME}"
"$(/usr/bin/hostname)"\n\t\tellip="${\n\t\t\t[[ "${LC_ALL}/${LANG}" ==
~(Elr)(.*UTF-8/.*|/.*UTF-8) ]] &&\n\t\t\t\tprintf "\\u[2026]\\n" || print "..."
; }"\n\t\tp="${PWD/~(El)${HOME}/\\~}"\n\t\t(( ${#p} > 30 )) &&\n\t\t\tprint -r
-n -- "${ellip}${p:${#p}-30:30}" ||\n\t\t\tprint -r -n -- "${p}"\n\t\t[[
"${LOGNAME}" == "root" ]] && print -n "# " || print -n "\\$ "\n\t\t)'
$ uname -a
SunOS xylabtecra 5.11 snv_130 i86pc i386 i86pc
With LOGNAME not set:
@xylabtecra:~/export/home/mj162486
*** (#1 of 1): 2010-01-04 09:29:04 GMT+00:00 <User 1-1SURPB>
=== *Public Comments* ========================================================
OpenSolaris ksh93 project lead Roland Mainz says:
The PS1 value reported in this bug is set in /etc/ksh.kshrc to provide
an user-friendly machine-wide default (see PSARC 2006/587). ksh93 itself
defaults to '$ ' as defined in the standard (using /etc/ksh.kshrc to set
PS1 allows us to both be standard-conformant and be user-friendly... :-)
).
Or short: This is not a bug.
*** (#1 of 4): 2010-01-05 03:37:41 GMT+00:00 <User 1-5Q-1267>
Well it is bug. There are at least two mistakes I see:
1) LOGNAME is not set in default enviroment, and the prompt looks as showed in
description then
2) there is misleading ~ between : and <pwd> - the replacement of HOME does not
work:
@xylabone:~/var$ pwd
/var
I will not study that overcomplicated setting to find the reason for 2), 1) is
probably separate CR.
*** (#2 of 4): 2010-01-05 09:06:03 GMT+00:00 <User 1-1SURPB>
The reason for misleading ~ in
@xylabone:~/var$ pwd
/var
is probably that your $HOME is not set because you used env - ksh93 (correct me
if I'm wrong).
But the PS1 is wrong anyway, for example if
HOME=/ab
PWD=/abc/de
it will show ~c/de as your path which is wrong.
To fix both issues (empty $HOME and HOME being part of PWD), replace this:
p="${PWD/~(El)${HOME}/\\~}"
with this:
case "$HOME" in ?*)p="${P/~(El)${HOME}(\/|$)/\~\1}";;*)p=$P;;esac
Oh yes, now someone tell me that perl is unreadable :)
*** (#3 of 4): 2010-01-05 10:07:40 GMT+00:00 <User 1-PWPBN>
Shorter version of my fix without using 'case'
p=$P;[[ -n $HOME ]]&&p="${P/~(El)${HOME}(\/|$)/\~\1}"
*** (#4 of 4): 2010-01-05 10:10:29 GMT+00:00 <User 1-PWPBN>
=== *Workaround* =============================================================
=== *Additional Details* =====================================================
Targeted Release:
Commit To Fix In Build:
Fixed In Build:
Integrated In Build:
Verified In Build:
See Also: 6913823
Duplicate of:
Hooks:
Hook1:
Hook2:
Hook3:
Hook4:
Hook5:
Hook6:
Program Management:
Root Cause:
Fix Affects Documentation: No
Fix Affects Localization: No
=== *History* ================================================================
Date Submitted: 2010-01-04 09:29:03 GMT+00:00
Submitted By: <User 1-1SURPB>
Status Changed Date Updated Updated By
=== *Service Request* ========================================================
Impact: Limited
Functionality: Primary
Severity: 3
Product Name: solaris
Product Release: osol_2009.06
Product Build: osol_2009.06
Operating System: snv_130
Hardware: x86
Submitted Date: 2010-01-04 09:29:04 GMT+00:00
=== *Multiple Release (MR) Cluster* - 0 ======================================
