hampered scrolling behavior

[tooth pik]

i love and use the CTRL-E and CTRL-Y scrolling commands so much i have
them mapped to F10 and F11 in my ~/.vimrc:

nnoremap <F10> <C-E>
inoremap <F10> <C-O><C-E>
nnoremap <F11> <C-Y>
inoremap <F11> <C-O><C-Y>

just today i noticed both up and down are impeded if i happen to be in
insert mode when i use them, going slower and in a jerky manner --
they both scroll beautifully when in normal mode

i wouldn't define this as a "problem," but a minor annoyance -- has
anyone else noticed the same?

[Sihera Andre]

Hi,

I'm using version 7.3.475 and there appears to be no problem here.
With your key mappings, scrolling is equally responsive both in Insert
mode and Normal mode.

Is it just C-E/C-Y? Or maybe it is it all cursor movement and you just
haven't noticed? Cursor movements appear to be written to the swap
file so slowed access to the swap file (e.g., when editing over NFS)
would cause a kind of sluggishness similar to what you appear to be
experiencing.

Cheers,

[tooth pik]

that's good information, thank you -- i didn't think the scroll
behavior used to be affected
by normal/insert mode (7.3.475 was current mar-16 of 2012)

my inference is that some overhead has been added to the <C-O>
function that temporarily
escapes from insert mode and then returns after whatever you've asked
it to do is done

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