gentoo PS1

PS1='`a=$?;if [ $a -ne 0 ]; then a="  "$a; echo -ne "\[\e[s\e[1A\e[$((COLUMNS-2))G\e[32m\e[1;41m${a:(-3)}\e[u\]\[\e[0m\e[2m\]"; fi`\[\033[01;32m\]\u@\[\033[01;35m\]\h\[\033[00m\]:\[\033[01;34m\]`pwd`\[\033[00m\]`B=$(git branch 2>/dev/null | sed -e "/^ /d" -e "s/* \(.*\)/\1/"); if [ "$B" != "" ]; then S="git"; elif [ -e .bzr ]; then S=bzr; elif [ -e .hg ]; then S="hg";B="$(hg branch)"; elif [ -e .svn ]; then S="svn"; else S=""; fi; if [ "$S" != "" ]; then if [ "$B" != "" ]; then M=$S:$B; else M=$S; fi; fi; [[ "$M" != "" ]] && echo -en "\e[s\e[$((COLUMNS-${#M}-1))G\e[33m\e[1;40m($M)\e[0m\e[u"`\n\[\033[01;34m\]\$\[\033[00m\] '