cds exit codes and options

[aryarm]

In today's episode of making cds more like cd:

• exit codes cds doesn't return an exit code of 1 when it fails. cd does
• options cds doesn't work when cd's -P option is used. This is because cds doesn't recognize -P as a directory, so it doesn't call regular cd Also what should we do about cd's -L option? It's turned on by default

[aryarm]

Here's a good resource that tries to handle exit codes. But this guy says we should use return, not exit.

[aryarm]

This is also a good resource for figuring out how to echo to standard error.