First and foremost, the article talks about flags in files, where your IDE of choice can probably autocomplete them (see http://emacswiki.org/emacs/DynamicAbbre

First and foremost, the article talks about flags in files, where your IDE of choice can probably autocomplete them (see http://emacswiki.org/emacs/DynamicAbbreviations http://emacswiki.org/emacs/DynamicAbbreviations for an example). Second, even on the commandline, bash_completion (http://www.gnu.org/software/bash/manual/html_node/Programmable-Completion.html http://www.gnu.org/software/bash/manual/html_node/Programmab...) has been available for a while now.