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bug#52129: 29.0.50; Wish: Extend `:align-to center' to work on lines in
From: |
Eli Zaretskii |
Subject: |
bug#52129: 29.0.50; Wish: Extend `:align-to center' to work on lines in buffer |
Date: |
Sat, 27 Nov 2021 13:25:13 +0200 |
> From: Arthur Miller <arthur.miller@live.com>
> Cc: 52129@debbugs.gnu.org
> Date: Sat, 27 Nov 2021 12:06:19 +0100
>
> > No, I mean to put this property:
> >
> > 'display '(space :align-to center)
> >
> > on a space character (or any other character, which will not be
> > displayed) that is prepended to the time-stamp-string you want to
> > display.
>
> Aha, like this?:
>
> (defun evc--time ()
> (concat (propertize " " 'display '(space :align-to center))
> (propertize
> (time-stamp-string " %H:%M") 'face evc--time-face)))
>
> That still seems to be dependanble on when the time string is inserted?
> Because
> when I test to insert like this:
>
> (defun evc--update ()
> (let ((time (evc--time))
> (date (evc--date)))
> (when (frame-live-p evc--frame)
> (select-frame evc--frame))
> (with-current-buffer evc--buffer
> (erase-buffer)
> (insert time "\n" date)
> (goto-char 1))))
>
> the string is not centered correctly; there is ~70 pixels difference between
> left and right margins.
That's because it centers the first character of the string, not its
middle character.
> Is there any way to make it aware of surrounding context, like entire line? Or
> would that be too demanding computationally?
I don't think I understand what you mean by "surrounding context", and
what would it mean for it to "be aware" of it?
> I guess there is a reason why it is made one char at a time.
Simplicity and speed, I guess. But that's not for me to answer: I
wasn't there when this was designed.
- bug#52129: 29.0.50; Wish: Extend `:align-to center' to work on lines in buffer, Arthur Miller, 2021/11/26
- bug#52129: 29.0.50; Wish: Extend `:align-to center' to work on lines in buffer, Eli Zaretskii, 2021/11/27
- bug#52129: 29.0.50; Wish: Extend `:align-to center' to work on lines in buffer, Arthur Miller, 2021/11/27
- bug#52129: 29.0.50; Wish: Extend `:align-to center' to work on lines in buffer, Eli Zaretskii, 2021/11/27
- bug#52129: 29.0.50; Wish: Extend `:align-to center' to work on lines in buffer, Arthur Miller, 2021/11/27
- bug#52129: 29.0.50; Wish: Extend `:align-to center' to work on lines in buffer,
Eli Zaretskii <=
- bug#52129: 29.0.50; Wish: Extend `:align-to center' to work on lines in buffer, Arthur Miller, 2021/11/27
- bug#52129: 29.0.50; Wish: Extend `:align-to center' to work on lines in buffer, Eli Zaretskii, 2021/11/28
- bug#52129: 29.0.50; Wish: Extend `:align-to center' to work on lines in buffer, Arthur Miller, 2021/11/28
- bug#52129: 29.0.50; Wish: Extend `:align-to center' to work on lines in buffer, Lars Ingebrigtsen, 2021/11/29