From: Bastien <bzg@altern.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 16497@debbugs.gnu.org
Subject: bug#16497: 24.3.50; `move-to-column' ignores invisible text at the beginning of the line, which create problems when using string-rectangle
Date: Mon, 20 Jan 2014 17:25:20 +0100 [thread overview]
Message-ID: <87k3dulixb.fsf@bzg.ath.cx> (raw)
In-Reply-To: <83eh42iry6.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 20 Jan 2014 17:38:41 +0200")
Eli Zaretskii <eliz@gnu.org> writes:
> move-to-column is a screen-moving command, and it has been skipping
> invisible text for the past 18 years. It also accounts for various
> other display-only features and artifacts. (It is a pity that this is
> not documented; I think it's a documentation bug.)
>
> So now I'm wondering why you thought you should be using this
> function, if what you need is (AFAIU) to get to the Nth character
> starting from the beginning of a line.
I don't think I should be using this command: I just used
`string-rectangle' which uses it (see my original report.)
> E.g., move-to-column also
> accounts for double-width characters (it counts them as 2 columns),
> and also for how composed characters are displayed (it could count N
> composed characters as M ~= N columns). It also accounts for
> characters displayed via display tables. Are you sure you want all
> this in the job you need to do with the rectangle?
>
> Or maybe you just want line-move-to-column.
Interestingly, the docstring of `line-move-to-column' is this:
Try to find column COL, considering invisibility.
This function works only in certain cases,
because what we really need is for `move-to-column'
and `current-column' to be able to ignore invisible text.
suggesting to improve `move-to-column' and `current-column'
by allowing them to handle invisible text.
--
Bastien
next prev parent reply other threads:[~2014-01-20 16:25 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-19 16:26 bug#16497: 24.3.50; `move-to-column' ignores invisible text at the beginning of the line, which create problems when using string-rectangle Bastien Guerry
2014-01-19 17:11 ` Eli Zaretskii
2014-01-20 9:22 ` Bastien
2014-01-20 15:38 ` Eli Zaretskii
2014-01-20 16:25 ` Bastien [this message]
[not found] ` <<83eh42iry6.fsf@gnu.org>
2014-01-20 18:10 ` Drew Adams
2014-01-19 20:48 ` Stefan Monnier
2014-01-20 9:11 ` Bastien
2014-01-20 15:41 ` Eli Zaretskii
2014-01-20 16:50 ` Bastien
2014-01-20 18:14 ` Stefan Monnier
2014-01-20 18:22 ` Bastien
2014-01-20 19:10 ` Stefan Monnier
2014-01-20 20:55 ` Bastien
2014-01-20 19:19 ` Eli Zaretskii
[not found] <<87ob38gcp1.fsf@bzg.ath.cx>
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