who: add libxo support

[swills]

Summary

Add libxo support to who(1)

[jlduran]

Thanks, I appreciate it!

(I really need to learn how to use Phabricator 🙃). I'll start with the low hanging fruits, and let someone more knowledgeable handle I18n and more advanced stuff, if needed.

I have attached a file with a couple of minor nits:

• Simple addition to the man page
• Addressing the two line comments
• Removing extra brackets for one-lined ìf statements for consistency with the rest of the file (not really necessary)

I would prefer if (xo_get_style(NULL) == XO_STYLE_TEXT) to if (xo_get_style(NULL) != XO_STYLE_TEXT) everywhere, but this is an old habit of avoiding inverted logic if possible (not really necessary).

D34541.diff6 KBDownload

usr.bin/who/who.c

168

This should be changed to xo_emit("{:headingstate/%s}", "S ");

171

I believe this should be :headingidle