[STUMP] interactive command in symbol plist

[Howard Yeh]

Hi All,

I am a new stumpwm user (welcome me! ; )

Just reading through the code. I am wondering if there's any special
reason why commands are saved in a global hash rather than in the
symbol plist?

To define a command, we could associate the interactive arguments as a
symbol property. To check if a function is a command, we just check if
the symbol has the "interactive" property in its plist.

Howard