#718029 emms: jack.el jack-set-rtlimits-program customize type

Package:
emms
Source:
emms
Description:
Emacs MultiMedia System
Submitter:
Kevin Ryde
Date:
2014-10-16 02:33:17 UTC
Severity:
minor
#718029#5
Date:
2013-07-28 00:04:36 UTC
From:
To:
M-x customize-variable jack-set-rtlimits-program shows

Hide jack-set-rtlimits-program: nil
   [ State ]: STANDARD. (mismatch)

"mismatch" means the value nil, which is the default, is not allowed by
its customize :type 'file.

For a program name which can be nil for no such program one possibility
is a choice style

  :type '(choice (const :tag "None" :value nil) string)

as per for example socks-nslookup-program in socks.el.