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@nothingmuch
Forked from melo/.bash_prompt
Created October 13, 2010 03:21
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#!/bin/bash
#
# PS1 magic
#
# Mostly copied from YUVAL KOGMAN version, added my own __git_ps1 stuff
# Original: http://gist.github.com/621452
#
# See video demo of this at http://vimeo.com/15789794
#
# To enable save as .bash_prompt in $HOME and add to .bashrc:
#
# . ~/.bash_prompt
#
# Pedro Melo, <melo@simplicidade.org>
_update_prompt () {
## Save $? early, we'll need it later
local exit="$?"
## define some colors
local red="31";
local green="32";
local yellow="33";
local purple="35";
local cyan="36";
local white="37";
local pre="\[\e[";
local suf="\]";
local e_green="${pre}0;${green}m$suf";
local e_purple="${pre}0;${purple}m$suf";
local e_cyan="${pre}0;${cyan}m$suf";
local e_white="${pre}0;${white}m$suf";
local e_bred="$pre$red;1m$suf";
local e_byellow="$pre$yellow;1m$suf";
local e_normal="\[\e[0;0m\]"
## Initial prompt
_prompt="[$e_white\h$e_normal:$e_cyan\w$e_normal]";
## Color based on exit code
local bul="\342\200\242" # bullet character
case "$exit" in
"0" ) ex="$e_green$bul$e_normal " ;;
* ) ex="$e_bred$bul$e_normal " ;;
esac
## Color current user
local u;
local p;
if [ "$UID" = "0" ]; then
u="$e_bred\u$e_normal";
p="$e_bred#$e_normal";
else
u="$e_purple\u$e_normal";
p="\$";
fi
## Color git status if any
branch=`__git_ps1 "(%s)"`
if [ -n "$branch" ] ; then
if [ -z "$_dumb_prompt" ]; then
## Assumes that untracked files are always listed after modified ones
## True for all git versions I could find
git status --porcelain | perl -ne 'exit(1) if /^ /; exit(2) if /^[?]/'
case "$?" in
"0" ) branch=" $e_green$branch$e_normal" ;;
"1" ) branch=" $e_bred$branch$e_normal" ;;
"2" ) branch=" $e_byellow$branch$e_normal" ;;
"130" ) branch=" $e_white$branch$e_normal" ; _dumb_prompt=1 ;;
esac
else
branch=" $e_white$branch$e_normal"
fi
fi
export PS1="$ex$_prompt $u$branch $p ";
}
dumb_prompt () {
_dumb_prompt=1
}
smart_prompt () {
unset _dumb_prompt
}
if [ -n "$PS1" ] ; then
PROMPT_COMMAND='_update_prompt'
export PROMPT_COMMAND
fi
@nothingmuch
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This version traps ^C if git status is too slow, and assigns a different color to the non status aware branch

@omega
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omega commented Oct 13, 2010

Just thought I'd chime in with my own preference for exit code visualization:

RET_SUCC="\[\033[32;1m\]\[\342\234\]\223"
RET_FAIL="\[\033[31;1m\]\[\342\234\]\227\]"

It looks a bit kludgy but my general setup isn't very clean atm :p The result is a red X and green checkmark at least, which I find nice and distinguishable :p

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