GNU bug report logs - #46718
27.1; truncate-lines in minibuffer prevents auto resize

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Clemens <clemera <at> posteo.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.1; truncate-lines in minibuffer prevents auto resize
Date: Tue, 23 Feb 2021 14:44:20 +0100

Hi,

in Selectrum we are using an overlay after-string to display completion
candidates within the minibuffer. We also want to truncate-lines to 
prevent wrapping for long lines. When using:

;; emacs -Q
(setq resize-mini-windows t)
(minibuffer-with-setup-hook
    (lambda ()
      (setq-local truncate-lines t)
      (let ((ov (make-overlay (point-max) (point-max)))
	    (minibuf-after-string " \nOne\nTwo\nThree"))
	(put-text-property 0 1 'cursor t minibuf-after-string)
	(overlay-put ov 'after-string minibuf-after-string)))
  (read-string ":"))

the mini window will not resize but when commenting out the setting for
truncate-lines it resizes appropriately.

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