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bug#71415: 30.0.50; vtable-current-object off by one
From: |
Eli Zaretskii |
Subject: |
bug#71415: 30.0.50; vtable-current-object off by one |
Date: |
Sat, 15 Jun 2024 11:40:26 +0300 |
> From: john muhl <jm@pub.pink>
> Date: Fri, 07 Jun 2024 09:15:07 -0500
>
> After updating an object, ‘vtable-current-object’ in the displayer
> and formatter functions points to the object after the one that
> was updated. Running the following:
>
> (with-current-buffer (get-buffer-create "vtable-demo")
> (require 'vtable)
> (erase-buffer)
> (make-vtable
> :columns '("Index" "Number")
> :objects `((1 ,(random)) (2 ,(random)) (3 ,(random)))
> :displayer (lambda (value &rest _)
> ;; vtable-current-object is off by one; e.g.
> ;; update the first row and v-c-o will be the second row;
> ;; update the final row and v-c-o will be nil.
> (message "%s %s" value (vtable-current-object))
> (propertize (number-to-string value) 'face 'vtable)))
> (let* ((table (vtable-current-table))
> (first (nth 0 (vtable-objects table)))
> (other (nth 1 (vtable-objects table)))
> (final (nth 2 (vtable-objects table))))
> (setf (nth 1 first) 1)
> (setf (nth 1 other) 2)
> (setf (nth 1 final) 3)
> (vtable-update-object table first)
> (vtable-update-object table other)
> (vtable-update-object table final)))
>
> I see in the messages buffer:
>
> 1 (2 2) [2 times]
> 2 (3 3) [2 times]
> 3 nil [2 times]
>
> when I expect to see:
>
> 1 (1 1) [2 times]
> 2 (2 2) [2 times]
> 3 (3 3) [2 times]
Adam, any comments or suggestions?
Thanks.