How to make ALE completion window to appear upon a key-stroke?

[ubaldot]

The more I learn about ALE, the more I like it! :)
Today, I have discovered this

let g:ale_completion_enabled = 1

that works fantastic!
However, I find quite annoying that the completion window pop-up while I am typing.
Would that be possible to make it to appear only upon a certain key combination/keystroke, for example by pressing <tab> (or better, by exploiting supertab?)

Many thanks! :)

[hsanson]

Reading the help on ale-completion:

ALE provides an 'omnifunc' function ale#completion#OmniFunc for triggering
completion manually with CTRL-X CTRL-O. i_CTRL-X_CTRL-O

" Use ALE's function for omnicompletion.
set omnifunc=ale#completion#OmniFunc

Not tested but I think this means that you can unset g:ale_completion_enabled, set the omnifunc to ALE's OmniFunc and then use the default CTRL-X CTRL-O to invoke the auto-completion.

[sukima]

This does not work! Issue has been posted

[sukima]

I just tried again with the following (and latest version) and it worked. Thought it took a good 30 seconds to get the first result. After that things went smoothly. Perhaps there is a lazy loading of the tsserver (LSP) happening?

let g:ale_completion_enabled = 0
set omnifunc=ale#completion#OmniFunc

A tip is to use the (not documented) insert mode map they add for you CTRL+X CTRL+O CTRL+P which immediately runs the completion and opens the popup menu without filling in while after that CTRL+X CTRL+O seems to work as expected.