vertico-flat-mode with vertico-flat-max-lines > 1 does not respect (setq vertico-resize 'grow-only) about vertico HOT 5 CLOSED

I believe this line, which temporarily binds resize-mini-windows to t, is the cause.

Suggested patch:

--- vertico-flat-original.el    2024-03-31 13:35:08
+++ vertico-flat.el     2024-03-31 13:34:25
@@ -84,8 +84,7 @@
     (push `(vertico--input . ,vertico-flat-map) minor-mode-map-alist)))
 
 (cl-defmethod vertico--display-candidates (candidates &context (vertico-flat-mode (eql t)))
-  (setq-local truncate-lines nil
-              resize-mini-windows t)
+  (setq-local truncate-lines nil)
   (move-overlay vertico--candidates-ov (point-max) (point-max))
   (overlay-put
    vertico--candidates-ov 'after-string

Or perhaps it should be (setq-local truncate-lines nil resize-mini-windows vertico-resize).

But perhaps this is intentional for some reason?

from vertico.

The behavior is intentional, since for multiform setups we want grow only (or fixed size) for the large vertical mini buffer but still use the least amount of vertical space for the flat mini buffer. Ideally the candidates in flat mode fit on a single line anyway so there won't be too much jumping.

from vertico.

I must admit I strongly prefer grow-only behavior even for flat/ido-style completions. Is there any way to get this behavior with vertico-flat-mode?

With my patch, you can still get your preferred behavior via, eg:

(setq vertico-multiform-commands
      '((execute-extended-command flat (resize-mini-windows . t))))

from vertico.

I must admit I strongly prefer grow-only behavior even for flat/ido-style completions. Is there any way to get this behavior with vertico-flat-mode?

I strongly do not. ;) You can use an advice to get your desired behavior and override the variables.

from vertico.

Fair enough. In case anyone with the same problem stumbles on this thread, here's the advice I used:

(defadvice vertico--display-candidates (after reset-resize-mini-windows compile)
  (setq resize-mini-windows vertico-resize))

from vertico.