#!/usr/bin/env bash -e

print_set_version() {
  echo "<version> should be a string matching the installed Ruby name known by rbenv.

For your install, this is currently one of:

$(rbenv-versions --bare)

The special version string 'system' will use your default system Ruby."
}

case "$1" in
"") echo "usage: rbenv <command> [<args>]

Some useful rbenv commands are:
   commands      List all commands
   rehash        Rehash rbenv shims, use after installing binaries
   set-default   Set global default Ruby
   set-local     Set local directory default Ruby
   version       Show Ruby version being used
   versions      List Ruby versions known by rbenv

See 'rbenv help <command>' for more information on a specific command.
For a quick guide to rbenv, see: https://gist.github.com/1120938"
;;
set-default) echo "usage: rbenv set-default <version>

Sets the global default Ruby. 

$(print_set_version)"
;;
set-local) echo "usage: rbenv set-local <version>

Sets the local directory default Ruby, by writing the version to a file
named '.rbenv-version'. rbenv will search for this file up the directory
tree from the current working directory each time its shims are executed,
so this default will affect subdirectories.

$(print_set_version)"
;;
*) echo "No command arguments needed or invalid/undocumented command."
esac