Re: Remap while completion popup is visible

Imagine I just typed `Hea' and the completion popup pops in with the wollowing words: Head, Hearst, Heath, Heather and Heaviside.  To autocomplete with `Heater' I would move the selection to the right line using arrow keys or <C-N>/<C-P> and then would confirm the action with either Enter or <C-Y>.

What happens with the mapping above?  When I press <Tab> to confirm the autocompletion, Vim closes the completion popup and insert a space at the end -- leaving me with `Hea ' instead of `Heather'.

Is there a way to check for any interfering plugin?  Maybe vim-autocomplpop?

Cheers

On Sun, Jan 5, 2014 at 7:03 PM, ZyX <zyx.vim@gmail.com> wrote:

On Saturday, January 4, 2014 5:47:29 PM UTC+4, Matteo Landi wrote:
> Hi Everyone,
>
> I would like to remap the <Tab> key so that vim will automatically pick the current selected item from the completion popup.  I thought it would have been easy but was wrong;  here is what I added to my .vimrc file:
>
>   inoremap <expr> <Tab> pumvisible() ? "\<C-Y>" : "\<Tab>"
>
> Vim still keeps adding tabs rather than closing the completion popup.  Is it something wrong with that?  Maybe other plugins interfering?  I even found at least two different resources where something like this is done, but none of them worked.

Works for me. Can you show what exactly did you type, what you expected to see as a result and what you saw.

Note that `"\<C-y>"` here actually produces string `"\"\\\<C-y>\""` instead of `"\"\\<C-y>\""`. I.e. <C-y> gets replaced with control character *before* string evaluation happens meaning that backslashes are useless here. Since backslash-escaped control character inside double quotes is just control character this does not do any harm *except* for misguiding reader about <C-y> handling in this case: it is handled when doing :map argument expansion and not expression evaluation.

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