Those of you who love running Rake tasks but don’t like typing are in for a treat. Although there’s been task completion for Rake for a while now, most of the scripts for it are painfully slow, especially with Rails’ Rakefile.
Below is a small zsh completion script that uses a cache file (named .rake_tasks) to improve the performance of your tab keystrokes.
To use, throw it in your home folder somewhere and add source $HOME/.rake_completion.zsh to your .zshrc file.
A few disclaimers: Yes, it doesn’t work with lowercase named rakefile‘s. Only barbarians use such names though, so hopefully you won’t have a problem there. And no, it doesn’t complete the other assorted arguments that the rake command can accept, frankly because I rarely use them.
Without further ado, here’s the bytes.
_rake_does_task_list_need_generating () {
if [ ! -f .rake_tasks ]; then return 0;
else
accurate=$(stat -f%m .rake_tasks)
changed=$(stat -f%m Rakefile)
return $(expr $accurate '>=' $changed)
fi
}
_rake () {
if [ -f Rakefile ]; then
if _rake_does_task_list_need_generating; then
echo "\nGenerating .rake_tasks..." > /dev/stderr
rake --silent --tasks | cut -d " " -f 2 > .rake_tasks
fi
compadd `cat .rake_tasks`
fi
}
compdef _rake rake
(Use at your own risk. Comments and improvements welcome.)