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Glenn Morris authored
* doc/emacs/regs.texi (Registers): Mention previewing. * lisp/register.el (register-preview-default): New function, split from register-preview. (register-preview-function): Rename from register-preview-functions, make it not a hook. (register-preview): Use register-preview-function. (register-read-with-preview): Error on non-character event. * etc/NEWS: Related markup. Fixes: debbugs:16595
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