Where does fzf.vim actually execute the command, and does fzf wait for input stream finish?

[linrongbin16]

Hi,

Q1 - where does fzf.vim actually execute the command line in terminal?

Would you please teach me, which line in fzf.vim is really executing the fzf in terminal?

I'm using macOS + neovim 0.9, and I tried to add some echo to print the command variable in fzf.vim#L936, here's the code:

      echo "s:execute_term termopen, command:[".string(command)."]"
      echo "s:execute_term termopen, fzf:[".string(fzf)."]"

and here's the screenshot:

You can see the fzf variable is not able to print, because it contains some functions.

How could I better debug fzf.vim?

Q2 Does fzf wait for input stream finish?

In my knowledge, usually when I run below command:

rg | fzf

fzf wait use rg's stdout as input stream, wait for rg command finish, then start and search on rg results.

But what is going on when the input stream is quite big and not finish at once?

For example there's a super big file, and it keeps generating new data, needs 10 minutes to finish, when I run below command:

tail -f big_file.txt | fzf

Will fzf wait for the input stream finish? or it immediately start to search on the result?

[linrongbin16]

Oh, I just make a simple test on my macOS, and I think the Q2 answer is:

fzf does not wait for the input stream finish, it just start immediately and start to searching.