Bash Git Completion section in jasoncodes or my dotfiles

bash_profile.sh

# add git status if available
if which git > /dev/null
then
	GIT_COMPLETION_PATH="$(dirname $(realpath "$(which git)"))/../etc/bash_completion.d/git-completion.bash"
fi
if [ ! -f "$GIT_COMPLETION_PATH" ]
then
	GIT_COMPLETION_PATH=$(first_file_match -f \
		"/usr/local/git/contrib/completion/git-completion.bash" \
		"/opt/local/share/doc/git-core/contrib/completion/git-completion.bash" \
		"/etc/bash_completion.d/git" \
	)
fi

gistfile2.sh

# begin awesome colour prompt..
export PS1=""

# add rvm version@gemset
if [[ -n "$rvm_path" ]]
then
	function __my_rvm_ps1()
	{
		[[ -z "$rvm_ruby_string" ]] && return
		if [[ -z "$rvm_gemset_name" && "$rvm_sticky_flag" -ne 1 ]]
		then
			[[ "$rvm_ruby_string" = "system" && ! -s "$rvm_path/config/alias" ]] && return
			grep -q -F "default=$rvm_ruby_string" "$rvm_path/config/alias" && return
		fi
		local full=$(
			"$rvm_path/bin/rvm-prompt" i v p g s |
			sed \
				-e 's/jruby-jruby-/jruby-/' -e 's/ruby-//' \
				-e 's/-head/H/' \
				-e 's/-2[0-9][0-9][0-9]\.[0-9][0-9]//' \
				-e 's/-@/@/' -e 's/-$//')
		[ -n "$full" ] && echo "$full "
	}
	export PS1="$PS1"'\[\033[01;30m\]$(__my_rvm_ps1)'
fi

# add user@host:path
export PS1="$PS1\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w"

function realpath()
{
	python -c 'import os,sys;print os.path.realpath(sys.argv[1])' "$@"
}

function first_file_match()
{
	local OP="$1"
	shift
	while [ $# -gt 0 ]
	do
		if [ $OP "$1" ]
		then
			echo "$1"
			return 0
		fi
		shift
	done
	return 1
}

function realpath()
{
	python -c 'import os,sys;print os.path.realpath(sys.argv[1])' "$@"
}


# add git status if available
if which git > /dev/null
then
	GIT_COMPLETION_PATH="$(dirname $(realpath "$(which git)"))/../etc/bash_completion.d/git-completion.bash"
fi
if [ ! -f "$GIT_COMPLETION_PATH" ]
then
	GIT_COMPLETION_PATH=$(first_file_match -f \
		"/usr/local/git/contrib/completion/git-completion.bash" \
		"/opt/local/share/doc/git-core/contrib/completion/git-completion.bash" \
		"/etc/bash_completion.d/git" \
	)
fi
if [ -f "$GIT_COMPLETION_PATH" ]
then
	source "$GIT_COMPLETION_PATH"
	export GIT_PS1_SHOWDIRTYSTATE=1
	export GIT_PS1_SHOWSTASHSTATE=1
	export GIT_PS1_SHOWUNTRACKEDFILES=1
	export PS1="$PS1"'\[\033[01;33m\]$(__git_ps1 " (%s)")'
fi

# finish off the prompt
export PS1="$PS1"'\[\033[00m\]\$ '