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Re: [bug] Home dir in PS1 not abbreviated to tilde

From: Clark J. Wang
Subject: Re: [bug] Home dir in PS1 not abbreviated to tilde
Date: Tue, 13 Mar 2012 13:04:05 +0800

On Mon, Mar 12, 2012 at 12:22, Yongzhi Pan <address@hidden> wrote:

> Tested in GNU bash, version 3.00.16(1)-release and 4.1.2(1)-release.
> Upon login, home dir is displayed as tilde in PS1:
> address@hidden ~$ echo $PS1
> address@hidden \w$ \[\033[0m\]
> address@hidden ~$ pwd
> /export/home/pan/
> After a cd command, which change directory to $HOME (not changed at all),
> it is displayed as the complete path:
> address@hidden ~$ cd
> address@hidden /export/home/pan$
> The reason is that my home in passwd has a trailing slash:
> address@hidden /export/home/pan$ grep ^$USER: /etc/passwd
> pan:x:896:1::/export/home/pan/:/bin/bash

You can also reproduce this by directly setting HOME to

> This is tricky to find. I hope it will display tilde even if home dir entry
> in passwd has one or more trailing slash.

I personally don't think this needs to be fixed. :)

> PS: I read the source code and do not know where this is done, maybe in
> y.tab.c?

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