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Re: require-hard-newlines to use newline
From: |
Chong Yidong |
Subject: |
Re: require-hard-newlines to use newline |
Date: |
Thu, 3 Mar 2005 17:32:26 -0500 (EST) |
User-agent: |
SquirrelMail/1.4.4 |
> As I understand it, the newline that ends the last line in a paragraph
> is normally soft. A hard newline would end the following blank line.
> The newline added by require-final-newline would be at the end of the
> last line in a paragraph, so it ought to be soft.
Both of the newline ends the last line in a paragraph, as well as the
newline on the following blank line, are hard. You can verify this for
yourself, but I can also illustrate it. First, recall that soft newlines
are equivalent to spaces, so fill-paragraph can delete a soft newline or
replace it with one or more spaces. Now if you have a paragraph
foo foo\n
bar bar\n
\N
foo bar\n
...
where \n denotes a soft newline and \N a hard newline, then it is refilled to
foo foo\n
bar bar\N
foo bar\n
...
whereas
foo foo\n
bar bar\N
\N
foo bar\n
can't be further refilled.
> It is impossible to distinguish between a soft newline left at the end
> of a line by require-final-newline, and a soft newline produced by,
> e.g., a call to kill-line,
>
> I don't see how a call to kill-line can produce a newline.
> I don't understand you.
kill-line deletes up to and including the newline. Suppose the cursor is
at the indicated position:
foo-!-bar\n[EOB]
Calling kill-lines gives
foo-!-\n[EOB]
which, since soft newlines can be converted to spaces, is refilled to
foo-!-[EOB]
The soft newline at the end is gobbled up. That's the problem.
- (no subject), Chong Yidong, 2005/03/01
- Re: (no subject), Luc Teirlinck, 2005/03/01
- require-hard-newlines to use newline, Chong Yidong, 2005/03/01
- Re: require-hard-newlines to use newline, Luc Teirlinck, 2005/03/01
- Re: require-hard-newlines to use newline, Richard Stallman, 2005/03/02
- Re: require-hard-newlines to use newline, Chong Yidong, 2005/03/02
- Re: require-hard-newlines to use newline, Richard Stallman, 2005/03/03
- Re: require-hard-newlines to use newline,
Chong Yidong <=
- Re: require-hard-newlines to use newline, Luc Teirlinck, 2005/03/03
- Re: require-hard-newlines to use newline, Chong Yidong, 2005/03/03
- Re: require-hard-newlines to use newline, Miles Bader, 2005/03/03
- Re: require-hard-newlines to use newline, Chong Yidong, 2005/03/04
- Re: require-hard-newlines to use newline, David Kastrup, 2005/03/04
- Re: require-hard-newlines to use newline, Richard Stallman, 2005/03/04
- Re: require-hard-newlines to use newline, Luc Teirlinck, 2005/03/07
- Re: require-hard-newlines to use newline, Chong Yidong, 2005/03/07
- Re: require-hard-newlines to use newline, Luc Teirlinck, 2005/03/07
- Re: require-hard-newlines to use newline, Luc Teirlinck, 2005/03/07