[BusyBox 0000647]: ash does not handle '\$' in prompt when prompt expansion is enabled
bugs at busybox.net
bugs at busybox.net
Fri Dec 22 13:08:30 UTC 2006
The following issue has been CLOSED
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http://busybox.net/bugs/view.php?id=647
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Reported By: iggarpe
Assigned To: BusyBox
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Project: BusyBox
Issue ID: 647
Category: Documentation
Reproducibility: always
Severity: minor
Priority: normal
Status: closed
Resolution: open
Fixed in Version:
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Date Submitted: 01-18-2006 00:44 PST
Last Modified: 12-22-2006 05:08 PST
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Summary: ash does not handle '\$' in prompt when prompt
expansion is enabled
Description:
If you use ash, and CONFIG_ASH_EXPAND_PRMT is enabled, you'll see '$' in
the prompt even if you are root.
I've traced the bug and it seems that prompt expansion turns the default
value of PS1='\w \$ ' into PS1='\w $ ', that is, just removes the '\' in
front of the '$', thus from there on, '$' is printed as a literal in the
prompt. I guess prompt expansion is broken somehow.
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vodz - 01-18-06 01:03
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I think, its not bug.
Expanding promt works as eval string.
Example:
1$ bash --version
GNU bash, version 2.05b.0(1)-release (i486-slackware-linux-gnu)
Copyright (C) 2002 Free Software Foundation, Inc.
2$ echo `echo '\w'`
\w
3$ echo `echo '\$'`
$
4$ echo `echo '\\$'`
\$
\w is invalid escaping, but \$ - valid. First backslash escaping a dollar
char
and evalute without backslash.
If you using EXPAND_PROMPT feature, then must use double escaping shell
special chars for give with backslash to the fancy promt decoder.
Please close this bug.
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bernhardf - 12-22-06 05:08
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Not a bug.
Issue History
Date Modified Username Field Change
======================================================================
01-18-06 00:44 iggarpe New Issue
01-18-06 00:44 iggarpe Status new => assigned
01-18-06 00:44 iggarpe Assigned To => BusyBox
01-18-06 00:47 iggarpe Issue Monitored: iggarpe
01-18-06 00:47 iggarpe Issue End Monitor: iggarpe
01-18-06 01:03 vodz Note Added: 0000945
04-10-06 00:29 iggarpe Issue Monitored: iggarpe
04-10-06 00:29 iggarpe Issue End Monitor: iggarpe
12-22-06 05:08 bernhardf Status assigned => closed
12-22-06 05:08 bernhardf Note Added: 0001921
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