By way of Ruby Inside, this site has a .bash(rc|_profile) function/completion to open rdocs for installed gems on your machine.
I changed it slightly so that it would just open in a new tab in firefox.
Put this in your .bash(rc|_profile):
export GEMDIR=`gem env gemdir`
gemdoc() {
firefox -new-tab $GEMDIR/doc/`$(which ls) $GEMDIR/doc | grep $1 | sort | tail -1`/rdoc/index.html
}
_gemdocomplete() {
COMPREPLY=($(compgen -W '$(`which ls` $GEMDIR/doc)' -- ${COMP_WORDS[COMP_CWORD]}))
return 0
}
complete -o default -o nospace -F _gemdocomplete gemdoc
Then source that file, and try it out.
$ gemdoc acts[tab][tab]
Will show you all the gems you have that start with acts. Then complete the whole thing and it will open the rdoc in a new tab in your already running instance of Firefox.
