[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#31588: 26.1; format counts some Unicode characters as two
From: |
Noam Postavsky |
Subject: |
bug#31588: 26.1; format counts some Unicode characters as two |
Date: |
Thu, 24 May 2018 20:50:45 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) |
"James P. Ascher" <jpa4q@virginia.edu> writes:
> 3: M-S-: and call (insert (format "%-2s" '➖))
>
> What I expected:
>
> xxxxx➖ xxxxxxxx
>
> What results:
>
> xxxxxx➖xxxxxxx
>
>
> In comparison, (insert (format "%-2s" 'z)) gives:
>
> xxxxxxz xxxxxx
> The same problem occurs on my setup with ❌ (CROSS MARK).
>
> However, these Unicode items characters work as I expect: ▶ (BLACK
> RIGHT-POINTING TRIANGLE), ✚ (HEAVY GREEK CROSS), ▷ (WHITE RIGHT-POINTING
> TRIANGLE), and ◼ (BLACK MEDIUM SQUARE).
>
> As far as I can tell, something is off about the styled_format and how
> it counts characters- I suspect something about counting
> multibyte characters, but it's a little beyond me.
I think it's intended, ➖ and ❌ are wide characters:
(mapcar #'char-width '(?➖ ?❌ ?▶ ?✚ ?▷ ?◼))
;=> (2 2 1 1 1 1)
Although in my current font the width seems to be more like 1.8 or
something.
wide-chars.png
Description: screenshot of the characters