Re: Why does synID() always return zero when inserting at the end of a line?

2015-09-17 21:42 GMT+03:00 Ben Fritz <fritzophrenic@gmail.com>:
> On Thursday, September 17, 2015 at 12:01:52 PM UTC-5, Tony Mechelynck wrote:
>> Maybe because in Insert mode at the end of the line, the cursor is one
>> past the last character on the line?
>>
>
> Sure, but the region extends past this line on the next line. It's inside a /* ... */ syntax region. So Vim should be able to know what the syntax region is.

No. There are ways to highlight past the end of line (though not with
:syn). Returning something other then zero means that text past the
end of line is highlighted according to the given syntax group which
was defined using :syn. This is not true.

>
>> How exactly do you call synID()? In a script or at i_CTRL-O on the
>> command line? Or in a mapping?
>> Tests I did here were inconclusive.
>>
>
> Two ways I experienced while debugging this:
> 1. In a CursorMovedI autocmd.
> 2. Using i_CTRL-R with the expression register.
>
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