Covert command to use as mapping with %c as argument

Question

This command works as expected:

command! vimgrep !vim "+silent grep %a"

I'm trying to replace %a with %c in a mapping. How can I make this mapping work?

nnoremap <wait> <help> ,v :execute "!vim '+silent grep %c' >/dev/null 2>&1"<CR>

Greetings

Answer 1

This works in my tests:

:nnoremap <wait> <help> ,v :execute "!vim '+silent grep '%c' *' 2>&1"<CR>

Changes:

• because %c is escaped, put it outside of single quotes
• removed >/dev/null as that prevents Vim from using the terminal
• added * because Vim's :grep needs at least two parameters