Alternative mapping for <Tab> key via YouCompleteMe

Question

I have tried many of the available online instructions on remapping my <Tab> key in my vimrc file but none of them have any effect. If I run :map! <Tab> ᐅ directly from command entry it'll work, but not from vimrc.

When I run :verbose imap <Tab> I get the following.

i  <Tab>       * pumvisible() ? "\<C-N>" : "\<Tab>"
    Last set from ~/.vim/bundle/YouCompleteMe/autoload/youcompleteme.vim

Looking at the source code for YouCompleteMe I see a variable of key is present which is mapped to <Tab> if it's not in completion mode. How can I set what the <Tab> key is when not in completion mode for YouCompleteMe?

Answer 1

Credit to: https://github.com/micbou — answer

If what you want is inserting the ᐅ symbol when the completion menu is not visible, adding these lines to your vimrc should do the trick:

" Remove <Tab> from the list of keys mapped by YCM.
let g:ycm_key_list_select_completion = ['<Down>']
inoremap <expr> <Tab> pumvisible() ? "\<C-n>" : "ᐅ"