How to expand filename without extension in abbreviation in vim?

Question

I have several abbreviations for ack:

cnoreabbrev Ack Ack!
cnoreabbrev ack Ack!

which rewrites ack to Ack! in vim's command line/mode.

Now I'd like to use file name without extension to ignore it from searches using

:echo expand('%:r')

I imagined that I'd do it similarly to bash expansion using `

 cnoreabbrev acki Ack! --ignore `expand('%:r')`

but this doesn't work.

How can I achieve this? I specifically want the abbreviation not a function (but it might be there indirectly) to have an uninterrupted flow where I write acki and then immediately search term

Answer 1

If you want to use expand () you'll need to play with c_CTRL-R=. fortunatelly here you won't need something that complex.

Indeed, % is enough to obtain the filename. To keep only its main part you can then use %< from plain old vi.