wp-cli/wp-cli — pull request #1058 by scribu (2014-03-07 12:35:45+00:00)
Title: move --format=ids handling to individual commands

I think `--format=ids` was a bad idea (not scalable), so instead of making it work for `wp plugin list` and `wp theme list`, I'm going to limit it to the commands that already supported it.

Fixes #1057