vi-kill-line-prev (vi: Ctrl-U) Delete the string from the beginning of the edit buffer to the cursor and save it to the cut buffer.
Readline
unix-line-discard (C-u) Kill backward from the cursor to the beginning of the current line.
Remove everything in the DependencyList that matches but doesn’t satisfy items in dependencies (a hash of gem names to arrays of dependencies).
Suggests gems based on the supplied gem_name. Returns an array of alternative gem names.
Enumerates the outdated local gems yielding the local specification and the latest remote version.
This method may take some time to return as it must check each local gem against the server’s index.