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Bug in \[ special character handling inside PS1 ( PROMPTING )

From: Rahul Sahadevan
Subject: Bug in \[ special character handling inside PS1 ( PROMPTING )
Date: Sun, 1 Apr 2001 00:57:38 +0530

Configuration Information [Automatically generated, do not change]:
Machine: sparc
OS: solaris2.5.1
Compiler: gcc
CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='sparc' -DCONF_OSTYPE='solaris2.5.
1' -DCONF_MACHTYPE='sparc-sun-solaris2.5.1' -DCONF_VENDOR='sun' -DSHELL -DHA
VE_CONFIG_H -DSunOS5  -I.  -I. -I./include -I./lib -I/users/srahul/software/
SUN/include -O6 -fpermissive
uname output: SunOS <<Censored>> 5.7 Generic_106541-12 sun4u sparc
Machine Type: sparc-sun-solaris2.5.1

Bash Version: 2.04
Patch Level: 0
Release Status: release

        The  PS1 backslash  escaped  special character  \[ for  handling
unprintable characters in  shell prompts is not handled  correctly. If I
have 2  sets of  \[ and  \], the  second set  is apparently  not handled

        If I set my PS1 to "\[\e[01;36m\][\h]\w: \[\e[00;32m\]" and then
cd to a  very deeply nested directory  ( $COLUMNS is 80 )  such that the
directory  path  is about  90  chars,  then  the prompt  is  incorrectly
printed. ie the first  88 characters of the path are  printed ( after 80
chars, the next 8  chars wrap to the next ( = 2nd  ) line ), followed by
an unexpected newline, followed by  the remaining characters of the path
on the  3rd line. If  I remove the  "\e[00;32m" and the  enclosing \[\],
then  it displays  correctly.  So  I assume  that  the  8 non  printable
characters sent to the terminal inside the 2nd \[\] block is not handled
correctly. I  am on Solaris  2.7 with TERM as  rxvt or screen  and using
ncurses 5.1.

 Don't know...

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