On Thursday, September 25, 2014 12:10:09 AM UTC-5, Tony Mechelynck wrote:
> On 22/09/14 19:37, Ben Fritz wrote:
>
> > I was actually quite surprised to find that abbreviations don't work if you
> > wait 'updatetime' milliseconds between starting and ending the
> > abbreviation, triggering the CursorHoldI event. That could be due to
> > specific events firing, I don't really know, but it is not documented
> > anywhere I could find.
>
>
>
> What is documented is that mappings expire after 'timoutlen'
>
> milliseconds. Abbreviations are not explicitly mentioned there, but I
>
> imagine that they might share part of the mapping code.
>
>
>
> - Try setting 'timeoutlen' and 'updatetime' to very different valuies so
>
> you can easily tell which of them is relevant;
>
> - If 'updatetime' does trigger abbreviations even when very different
>
> from 'timeoulen', does it make a difference if you remove any CursoHoldI
>
> autocommands that you might have?
>
>
Oh, it's definitely 'updatetime' and CursorHoldI. In my case abbreviations
would expand if I waited a few seconds, but if I waited longer the cursor would
briefly pause in its flashing as my autocmds processed, and after that
abbreviations would not expand. I checked my autocmds and found the culprit.
In my case the behavior is caused by this autocmd, which I did not remember
having, and I can probably understand why it would impact abbreviations:
if exists("##CursorHoldI")
autocmd CursorHoldI * call feedkeys("\<C-G>u", "nt")
endif
The autocmd breaks the undo sequence if pausing for a long time in insert mode,
since if I pause a long time in insert mode I'm probably making multiple
changes. I imagine breaking the undo sequence also breaks the insert so that it
no longer looks like I typed the whole abbreviation this insert session.
I'm sure there may be other autocmds or plugins which could cause similar
problems; all they must do is break the undo sequence somehow.
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