ZSH is better BASH!

ZSH is better BASH, you should really change to newer and better shell.
Why it's better? it has better completion, support right prompt, see this presentation for more

Here's how to install it on ArchLinux:

pacman -S zsh zsh-completions
chsh -s `which zsh`
sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"

Oh-My-Zsh is package manager for zsh, you can change theme, add more aliases, for example:

plugins=(git git-extras redis-cli sudo systemd archlinux)

You can also install another theme, such as bullet-train:

mkdir $ZSH_CUSTOM/themes
cd $ZSH_CUSTOM/themes
aria2c "http://raw.github.com/caiogondim/bullet-train-oh-my-zsh-theme/master/bullet-train.zsh-theme"

Then set on ~/.zshrc:

BULLETTRAIN_DIR_EXTENDED=2
ZSH_THEME="bullet-train"