> Hello,
>
> In documentation about insert mode (':he insert.txt') there is a following
> example:
>
> ---------------------------------------------
> An example for using CTRL-G u:
>
> :inoremap<C-H> <C-G>u<C-H>
>
> This redefines the backspace key to start a new undo sequence. You can now
> undo the effect of the backspace key, without changing what you typed before
> that, with CTRL-O u.
>
> ---------------------------------------------
>
> When I tested this example, I didn't get the expected behaviour - the result
> was as though backspace wasn't redefined. The example started working only
> when I defined the mapping as follows:
>
> ':inoremap<BS> <C-G>u<BS>'
>
> Also, according to the documentation (':he keycodes'), I expected that
> typing ':<ctrl-k><ctrl-h>' will result in string'<BS>' written on the
> command line, similarly to ':<ctrl-k><ctrl-@>', which results in string
> '<Nul>' written on the command line (I should note that in the last case
> most of the keys don't work as I expected, for example ':<ctrl-k><ctrl-[>'
> doesn't write the string '<Esc>' etc.).
>
> I see that<ctrl-h> is equivalent to backspace in the sense that in insert
> mode<ctrl-h> deletes character before the cursor, similarly to the
> backspace.
>
>
> Why in the cases above I don't get the expected behaviour?
>
>
> Thanks.
>
>
>
What behaviour do you get?
Best regards,
Tony.
--
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their way around a room, each believing himself in mortal peril from
the other, whom he assumes to have perfect vision. Each tends to
ascribe to the other side a consistency, forsight and coherence that
its own experience belies. Of course, even two blind men can do
enormous damage to each other, not to speak of the room.
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