Date: Tue, 17 Nov 2009 18:29:41 -0500 From: "Michael P. Soulier" <msoulier@digitaltorque.ca> To: Polytropon <freebsd@edvax.de> Cc: freebsd-questions@freebsd.org Subject: Re: bash prompt update lagging Message-ID: <20091117232940.GB6951@anton.digitaltorque.ca> In-Reply-To: <20091116031758.0729246c.freebsd@edvax.de> References: <20091115231424.GA29418@anton.digitaltorque.ca> <20091116031758.0729246c.freebsd@edvax.de>
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On 16/11/09 Polytropon said:
> Your PS1 seems to include ${SHORT_PWD}, a variable. It seems
> that it is not updated immediately after the cd command.
Yeah, looks like it. Works on linux though...
> By the way, this is bash-3.2.25 on FreeBSD/x86 7.
bash-4.0.33_2 on x86 6.3.
> Is this what you've intended the prompt to look like?
I'm using an awk script to truncate any pwd that's too long.
get_short_pwd()
{
# The actual max length is max_len + the length of trunc_symbol
local max_length=3D$1
local trunc_symbol=3D"..."
if [ -z "$max_length" ]; then
max_length=3D20
fi
if [ "$PWD" !=3D "$OLDPWD" ]; then
SHORT_PWD=3D$(awk "BEGIN { =20
path =3D ENVIRON[\"PWD\"]
home =3D ENVIRON[\"HOME\"]
home_len =3D length(home)
max_len =3D $max_length
sym_len =3D length(\"$trunc_symbol\")
if(substr(path, 0, home_len) =3D=3D home) {
path =3D sprintf(\"~%s\", substr(path, home_len + 1))
}
path_len =3D length(path)
if (path_len > max_len) {
path =3D sprintf(\"%s%s\", \"$trunc_symbol\", substr(path, =
path_len + sym_len - max_len + 1))
}
print path
}")
OLDPWD=3D${PWD}
fi
}
This is called via a build_prompt() function in my .bashrc. I guess I'll ec=
ho
out some variables there and see what's happening.
FTR this did work, and then I updated bash in ports.
Mike
--=20
Michael P. Soulier <msoulier@digitaltorque.ca>
"Any intelligent fool can make things bigger and more complex... It takes a
touch of genius - and a lot of courage to move in the opposite direction."
--Albert Einstein
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