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bug#1453: 23.0.60; Dead keys do not work in dired and similar modes in C


From: Alan Third
Subject: bug#1453: 23.0.60; Dead keys do not work in dired and similar modes in Cocoa port
Date: Sat, 10 Sep 2016 22:21:34 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (darwin)

Wolfgang Lux <address@hidden> writes:

> Dired mode binds ~ to dired-flag-backup-files. When one attempts
> entering
> ~ via the dead-key combination Alt-n (assuming the Alt key is not used
> as
> a modifier key and Command is interpreted as Meta key), Emacs first
> reports
> an error message "Buffer is read-only: #<buffer ~>" followed by an error
> message "Wrong type argument: overlayp, nil" upon the next event.

This is still sort of an issue in Emacs 25. As far as I can tell Emacs
still gives the "buffer is read-only" message, but as soon as another
key is hit actually executes dired-flag-backup-files.

I also suspect this won't be limited to the NS port, but will be an
issue anywhere you can use dead-keys in a read-only buffer.

I can't think of any reason to try and display the partially complete
input when the buffer's read-only, but I can't see where this dead-key
entry code is located to see if it's possible to do a check.
-- 
Alan Third





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