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Date: Wed, 13 Aug 2008 11:24:33 +0200
From: Angelo Graziosi <angelo DOT graziosi AT alice DOT it>
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Subject: On bash prompt
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In /etc/profile, PS1 for bash is defined as

PS1='\[\e]0;\w\a\]\n\[\e[32m\]\u@\h \[\e[33m\]\w\[\e[0m\]\n\$ '

Indeed I have

$ echo $PS1
\[\e]0;\w\a\]\n\[\e[32m\]\u@\h \[\e[33m\]\w\[\e[0m\]\n\$
^^^^^(1)^^^^^


Now this causes some problems with 'M-x shell' in Emacs: the prompt has 
many garbage characters, like '[33m' etc..

In Emacs this problem could be solved with 'M-x 
ansi-color-for-comint-mode-on', but the sequence (1), i.e.

\[\e]0;\w\a\]

still causes problems.

If one defines PS1 as:

PS1='\n\[\e[32m\]\u@\h \[\e[33m\]\w\[\e[0m\]\n\$ '

the prompt one obtains (in Cygwin) is the same as that defined in 
/etc/profile [1] and 'M-x ansi-color-for-comint-mode-on' fixes the thing 
(in M-x shell).

So, just a curiosity, why the extra 'code' (1), above? What the true 
difference between

PS1='\[\e]0;\w\a\]\n\[\e[32m\]\u@\h \[\e[33m\]\w\[\e[0m\]\n\$ '

and

PS1='\n\[\e[32m\]\u@\h \[\e[33m\]\w\[\e[0m\]\n\$ '

?


TIA,
    Angelo.

---
[1] Or, at least, I do not see any 'visual' difference.

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