bug#999: 23.0.60; left/right-margin property is not honored on word-wrapped lines

bug#999: 23.0.60; left/right-margin property is not honored on word-wrapped lines

[Lennart Borgman (gmail)]

When a line is wrapped the `left-margin' text property is honored only
on the first visual line. This seems ok to me unless word-wrap is true.
In that case I think that `left-margin' and `right-margin' should be
honored on all visual lines.


In GNU Emacs 23.0.60.1 (i386-mingw-nt5.1.2600)
 of 2008-09-18
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --no-opt --cflags
-Ic:/g/include -fno-crossjumping'

bug#999: marked as done (23.0.60; left/right-margin property is not honored on word-wrapped lines)

[Emacs bug Tracking System]

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Your message dated Fri, 19 Sep 2008 23:13:54 -0400
with message-id <871vzfjyq5.fsf@cyd.mit.edu>
and subject line Re: 23.0.60; left/right-margin property is not honored on word-wrapped lines
has caused the Emacs bug report #999,
regarding 23.0.60; left/right-margin property is not honored on word-wrapped lines
to be marked as done.

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From: "Lennart Borgman (gmail)" <lennart.borgman@gmail.com>
To: emacs-pretest-bug@gnu.org
Subject: 23.0.60; left/right-margin property is not honored on word-wrapped lines
Date: Fri, 19 Sep 2008 04:48:55 +0200
Message-ID: <48D31317.8080603@gmail.com>

When a line is wrapped the `left-margin' text property is honored only
on the first visual line. This seems ok to me unless word-wrap is true.
In that case I think that `left-margin' and `right-margin' should be
honored on all visual lines.


In GNU Emacs 23.0.60.1 (i386-mingw-nt5.1.2600)
 of 2008-09-18
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --no-opt --cflags
-Ic:/g/include -fno-crossjumping'



[-- Attachment #3: Type: message/rfc822, Size: 1730 bytes --]

From: Chong Yidong <cyd@stupidchicken.com>
To: "Lennart Borgman \(gmail\)" <lennart.borgman@gmail.com>
Cc: 999-done@emacsbugs.donarmstrong.com
Subject: Re: 23.0.60; left/right-margin property is not honored on word-wrapped lines
Date: Fri, 19 Sep 2008 23:13:54 -0400
Message-ID: <871vzfjyq5.fsf@cyd.mit.edu>

"Lennart Borgman (gmail)" <lennart.borgman@gmail.com> writes:

> But the reason for wrapping at words is to enhance readability for the
> user. For precisely this reason I think that the left margin property
> should be used indent the wrapped line too.
>
> After all that is how fill-paragraph works. I think we should think the
> same about wrapped lines.

The variable wrap-prefix can be used for this.

It would not be consistent to make the left/right margin affect
continued lines.

bug#999: 23.0.60; left/right-margin property is not honored on word-wrapped lines

[Chong Yidong]

> When a line is wrapped the `left-margin' text property is honored only
> on the first visual line. This seems ok to me unless word-wrap is
> true.  In that case I think that `left-margin' and `right-margin'
> should be honored on all visual lines.

A word-wrapped line is essentially the same as a continued line; it's
just that the line is continued at a word boundary rather than a window
edge.  In terms of the buffer contents, it's all one long line, so
there's no reason for margin properties to have any effect on the
subsequent *screen* lines in the wrapped line.

bug#999: 23.0.60; left/right-margin property is not honored on word-wrapped lines

[Lennart Borgman (gmail)]

Chong Yidong wrote:
>> When a line is wrapped the `left-margin' text property is honored only
>> on the first visual line. This seems ok to me unless word-wrap is
>> true.  In that case I think that `left-margin' and `right-margin'
>> should be honored on all visual lines.
> 
> A word-wrapped line is essentially the same as a continued line; it's
> just that the line is continued at a word boundary rather than a window
> edge.  In terms of the buffer contents, it's all one long line, so
> there's no reason for margin properties to have any effect on the
> subsequent *screen* lines in the wrapped line.

But the reason for wrapping at words is to enhance readability for the
user. For precisely this reason I think that the left margin property
should be used indent the wrapped line too.

After all that is how fill-paragraph works. I think we should think the
same about wrapped lines.