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Signaling text-read-only

From: Deniz Dogan
Subject: Signaling text-read-only
Date: Tue, 15 Feb 2011 04:35:12 +0100

I have a situation here where I need to tell the user that the part of
the buffer where point is located is read-only. This is what I am
thinking right now:

(unless (rcirc-looking-at-input)
  (error (error-message-string (list 'text-read-only)))


(unless (rcirc-looking-at-input)
  (signal 'text-read-only nil)))

I haven't found any examples of this explicit sort of signaling in the
other Lisp files in Emacs, but I might have missed something.

The reason why I need this is that `rcirc-complete' shouldn't be
called in read-only areas of the buffer.

What is the right way to do this?

Deniz Dogan

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