[Date Prev][Date Next][Thread Prev][][Date Index][Thread Index]

Re: [emacs-w3m/emacs-w3m] Bb history display (#4)

On 2019-02-24 17:50, yamaoka wrote:
> [1]@Boruch-Baum
> [line 10821] (width (- (w3m-display-width) 21)): [2]@yamaoka says
> that this is because how 'wide' characters appear differently in
> different environments. If so, is this really the correct solution?
> w3m-db-history-fix-indentation' and tweaking the width' (-21) are no
> more than a workarounds.
> It doesn't properly handle the character in my utf-8 environment,
> and what about any number of wide characters that could be present
> in the URL title? Shouldn't there be some kind of environment check
> and count of all the wide characters, instead of just adding '2' in
> all cases, even if its not needed?
> That is a w3m problem, not that of Emacs or emacs-w3m, I think (though
> Emacs on TTY makes a mysterious behavior). Emacs (at least the ones I
> have) says that the string width of "…" is 2 no matter what display (X
> or TTY) or font is used. Please try the attached ELisp snippet and
> Eval: (and (search-forward "bar" nil t) (goto-char (match-beginning
> 0)))
> in the beginning of each "foo" line.
> [3]ELisp2.gz

I did. What I get is:

foo… bar
`bar' starts at the column 48
foo** bar
`bar' starts at the column 48

But I don't understand why or how that's relevant. For (string-width
"…"), I get an answer of '1'...

I also tried the following, which also gives me values of one for everything:

(let ((ellipsis "…"))
(dolist (enc
'((us_ascii . raw-text)
(us-ascii . raw-text)
(gb2312 . cn-gb-2312)
(cn-gb . cn-gb-2312)
(iso-2022-jp-2 . iso-2022-7bit-ss2)
(iso-2022-jp-3 . iso-2022-7bit-ss2)
(tis-620 . tis620)
(windows-874 . tis-620)
(cp874 . tis-620)
(x-ctext . ctext)
(unknown . undecided)
(x-unknown . undecided)
(windows-1250 . cp1250)
(windows-1251 . cp1251)
(windows-1252 . cp1252)
(windows-1253 . cp1253)
(windows-1254 . cp1254)
(windows-1255 . cp1255)
(windows-1256 . cp1256)
(windows-1257 . cp1257)
(windows-1258 . cp1258)
(euc-jp . euc-japan)
(shift-jis . shift_jis)
(shift_jis . shift_jis)
(sjis . shift_jis)
(x-euc-jp . euc-japan)
(x-shift-jis . shift_jis)
(x-shift_jis . shift_jis)
(x-sjis . shift_jis)))
; test #1
(with-coding-priority (list (cdr enc))
(message "%d: %s"
(string-width ellipsis)
(car enc)))
; test #2
(message "%d: %s"
(string-width (decode-coding-string ellipsis (cdr enc)))
(car enc))))

CA45 09B5 5351 7C11 A9D1 7286 0036 9E45 1595 8BC0

You are receiving this because you are subscribed to this thread.
Reply to this email directly, view it on GitHub, or mute the thread.