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bug#736: C-l interacts badly with scroll-conservatively
From: |
Chong Yidong |
Subject: |
bug#736: C-l interacts badly with scroll-conservatively |
Date: |
Sun, 17 Aug 2008 15:12:04 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) |
"Drew Adams" <drew.adams@oracle.com> writes:
>> emacs -q
>> M-: (setq scroll-conservatively 100) RET
>> C-h n
>> C-v
>> C-l
>> C-l
>> C-l
>>
>> The repeated C-l's don't move to the top or bottom of the
>> window, unlike the usual behavior (new to Emacs 23) of
>> recenter-top-bottom.
>
> Maybe I'm misunderstanding the bug report, but by design
> `scroll-conservatively' modifies the behavior of
> `recenter-top-bottom'. As the doc string says:
>
> "Top and bottom destinations are actually
> `scroll-conservatively' lines from true window top
> and bottom."
That's true; I didn't see that.
But why does recenter-top-bottom use scroll-conservatively? AFAICT,
people often use a large nonzero number for scroll-conservatively so
that when point is at the bottom of the window, C-n scrolls down by one
and keeps the cursor at the bottom; and similarly, if point is at the
top of the window, C-p keeps the cursor at the top. It doesn't make
sense to make scroll-conservatively affect C-l.
I think we should use scroll-margin for this purpose, rather than
scroll-conservatively.
What do people think?