feat(prog/vim): add grep op plugin

.gitignore

@@ -3,5 +3,10 @@
 !/.gitignore
 
 !/programs
+
 /programs/nvim/*
 !/programs/nvim/init.vim
+!/programs/nvim/plugins
+
+/programs/tmux/*
+!/programs/tmux/.tmux.conf

programs/nvim/plugins/grep-operator.vim

@@ -0,0 +1,23 @@
+nnoremap <leader>g :set operatorfunc=<SID>GrepOperator<cr>g@
+vnoremap <leader>g :<c-u>call <SID>GrepOperator(visualmode())<cr>
+
+nnoremap <leader>cj :cnext<cr>
+nnoremap <leader>ck :cprev<cr>
+
+function! s:GrepOperator(type)
+  let saved_unnamed_register = @@
+
+  if a:type ==# 'v'
+    exe "normal! `<v`>y"
+  elseif a:type ==# 'char'
+    exe "normal! `[v`]y"
+  else
+    return
+  endif
+
+  silent exe ":grep! -R " . shellescape(@@) . " ."
+  copen
+
+  let @@ = saved_unnamed_register
+endfunction
+