ZyX wrote:
> > Nesting is indeed limited to one CTRL-O. Using CTRL-O while already in
> > Insert mode because of a CTRL-O doesn't make sense thus it's not
> > supported. Mainly because users would get confused because of all the
> > nested modes. Hitting Esc and not getting back to Normal mode already
> > is confusing if you didn't remember exactly what you were doing.
>
> That does answer a question ``why vim should not have deep nesting'' (and I
> totally agree with it), not ``why vim has such nesting at all''.
>
> > I suggest you assume Vim does not have bugs and make it work like that.
> > When you can't make it work we need to reconsider.
>
> When I was marking this as a bug, I did not consider that there can be
> nested insert modes. After you explained why does it happen, I tried
> to search the documentation and found nothing about it.
I have added a remark where i_CTRL-O is explained. It's probably
explained somewhere already, but I can't find it now.
> Even more, I do not encounter this bug
> if I press `<C-o>ch' by myself, not inside a mapping:
> echo $'a\x0fch-\ea\e:wq! result.txt\n' | vim -u NONE -c 'set nocompatible'
> (`\x0f' is `\C-o') results in «-» inside a `result.txt'. Why this does
> not yield the same result as
> vim -u NONE -c 'set nocompatible' \
> -c 'inoremap $ <C-o>ch-' \
> -c 'execute "normal a$\ea"' \
> -c 'wq! result.txt'
> ? I was using <C-o>c{smth} because it is easier to type for me and never
> encountered that until I tried to do this in a mapping.
There are some tricks to make CTRL-O work with "." and "rx". These may
also go into Insert mode, but should be allowed to nest.
I find it illogical to use CTRL-O to use a "c" command. Why not exit
Insert mode?
--
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The Quest for the Holy Grail (Monty Python)
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