Ben Schmidt wrote:
>> 1. abbrevs are not triggered by a mapping when remapping is off:
>>
>> " abbrevs not triggered:
>> :ino <esc> <esc>
>> :ino <esc> <c-]><esc>
>>
>> " abbrevs triggered as expected:
>> :imap <esc> <esc>
>> :imap <esc> <c-]><esc>| " careful, endless loop
>>
>> I'd like to have abbrevs expanded in all situations.
>
> I think that could be quite 'unsafe' to trigger without an explicit command.
> The
> whole point of noremap is to ignore all user customisations so that Vim
> behaves
> completely predictably. Expanding abbreviations would undermine this. It
> wouldn't
> be so bad in insert mode as in command mode, but it still would be bad.
>
> But if <C-]> is a command to expand an abbreviation, then indeed, it should
> surely
> do so even for a noremap, as that is its function! I would say it's a bug
> that
> that doesn't work.
The function of Ctrl-] in insert mode, is to avoid the need to type a further
character, such as a space, in order to trigger an abbreviation. After an
abbreviation, Ctrl-] should, according to my understanding, function exactly
as <Space><BS> by respect to a possible abbreviation.
If a mapping wants its {rhs} to be reinterpreted according to other
user-defined mappings and abbreviations, then IMHO it should not use noremap.
>
>> 2. The key i_Ctrl-] is supposed to trigger an abbrev without inserting a
>> character. Now it does insert itself if there is no abbrev to expand.
>> How is this useful in any way? IMHO it should never insert itself.
>
> I would agree with that. If it's a command, it should be a command; if it's
> not a
> command, it should insert itself; it shouldn't decide on the spur of the
> moment
> which it wants to be. I'd probably call that a bug too.
Hmmm... After an abbreviation, Ctrl-] means "expand the abbreviation without
the need for me to add, for instance, a space". Now what if there is no
abbreviation to expand? The circumstances are different then, so I suppose it
isn't illogical to revert to "standard" insert-mode behaviour, which is to
insert what you typed. Of course Bram has the final say. Does it work for
abbreviations if you define
:map! <C-]> <Space><BS>
? (not sure if :noremap! makes a difference)
BTW, on my keyboard, ] is AltGr-$, Ctrl-$ is $, and AltGr-Ctrl-$ inserts ^] in
Insert mode (not after an abbrev) but on the command line after an abbrev it
doesn't expand it: my only abbreviation is
:cabbrev h bot h
but when I type :h followed by AltGr-Ctrl-$ it doesn't get replaced by :bot h
-- rather, I get a menu (with 'wildmenu' on) of all ex-commands starting in h
or H, as if I had typed <Tab> instead of (whatever counts as) Ctrl-]. Is this
related to the fact that in Normal mode, Ctrl-] goes to the tag under the
cursor? (AltGr-Ctrl-$ does work for that.) It is in any case in contradiction
with ":help c_CTRL-]".
>
> My Vim exhibits the same behaviours.
>
> Ben.
Best regards,
Tony.
--
"Most legislators are so dumb that they couldn't pour piss out of a
boot if the instructions were printed on the heel."
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