Zsh, directory tab-completion with prefix

Here's an example from my own .zshrc that I keep as a copy/paste snippet:

# Try using the below template to set up zsh functions that act
# as aliases to cd and allow you to get autocomplete nicely.

project() { cd /path/to/project/$1; }
compctl -W /path/to/project/ -/ project

Just edit the /path/to/project section in both lines above then you are good to go.

A different way of achieving a similar effect is to define aliases for directories:

setopt auto_cd
alias -d s=~/projects

Type ~s/ Tab to change to a subdirectory of ~/projects; you can use ~s in a command argument, too.