Depends on nvim-lua/plenary.nvim. Provides run_cmd to run an external
command; run_shell to run a shell script, and qf to run a command/shell
script and populate quickfix with its stdout/stderr.
Create :Make command to run makeprg asynchronously.
Creates :Grep command to run grepprg asynchronously. Maps gr to run
:Grep on a textobject or visual selection. gr<Space> will open prompt for
:Grep.
As a convenience :Grep! runs vimgrep on all open buffers (synchronously);
and is mapped to grr and grr<Space>.
async#OpFuncWrapper, used for implementing gr and grr mappings can be
useful for other opfunc mappings. It receives a function as an argument, and
runs it with the pending textobject or visual selection.
nnoremap <expr> gr async#OpFuncWrapper({x -> execute("Grep ".x)}) for example
is how griw greps the word under cursor.