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Behavior Change between 2.04 and 2.05 for empty PS2
From: |
Markus Schwarzenberg |
Subject: |
Behavior Change between 2.04 and 2.05 for empty PS2 |
Date: |
Tue, 29 May 2001 10:08:37 +0200 (MET DST) |
Configuration Information [Automatically generated, do not change]:
Machine: sparc
OS: solaris2.7
Compiler: gcc
Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='sparc'
-DCONF_OSTYPE='solaris2.7' -DCONF_MACHTYPE='sparc-sun-solaris2.7'
-DCONF_VENDOR='sun' -DSHELL -DHAVE_CONFIG_H -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -I. -I. -I./include -I./lib
-I/home/digital/schwarzenberg/sol57/include -O2
uname output: SunOS sund32 5.7 Generic_106541-07 sun4u sparc SUNW,Ultra-5_10
Machine Type: sparc-sun-solaris2.7
Bash Version: 2.05
Patch Level: 0
Release Status: release
Description:
In bash 2.05 PS1 is displayed in cases where PS2 is to
be displayed when PS2 is set to an empty string.
Repeat-By:
execute interactively (<RETURN> is a return-keypress):
PS2=''
echo 'abc<RETURN>def'
As soon as the <RETURN> key is hit bash displays PS1
instead of nothing, as it was with older bash versions.
Fix:
Set PS2 to something that displays nothing but isn't empty:
PS2='\[\]'
The behavior change should be at least documented.
Personally I would prefer to keep the old behavior
(getting an empty PS2-prompt if PS2 set PS="" ), but
since it works with the fix the change isn't a problem.
- Behavior Change between 2.04 and 2.05 for empty PS2,
Markus Schwarzenberg <=