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emacs: help: check for nil key binding

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A standard way to unset a key binding is local-unset-key which is equivalent to
  (define-key (current-local-map) key nil)

Currently notmuch-help gives an error and fails if a user has done this.

To fix this we only add a help line if the binding is non-nil.
This commit is contained in:
Mark Walters 2013-11-12 20:10:53 +00:00 committed by David Bremner
parent 9ecfc1c426
commit a5ecdf390e
1 changed files with 1 additions and 1 deletions
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2
emacs/notmuch-lib.el
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@ -253,7 +253,7 @@ prefix argument. PREFIX and TAIL are used internally."
(setq tail
(notmuch-describe-keymap
binding ua-keys (notmuch-prefix-key-description key) tail)))
(t
(binding
(when (and ua-keys (symbolp binding)
(get binding 'notmuch-prefix-doc))
;; Documentation for prefixed command