Shell command

vimrc.functions.vim

@@ -80,6 +80,63 @@ function! LinterStatus() abort "{{{
 endfunction
 "}}}
 
+" Shell command
+" based on
+" http://vim.wikia.com/wiki/VimTip1599
+command! -complete=shellcmd -nargs=+ Shell call s:RunShellCommand(<q-args>)
+let g:shell_scratch_buffer_nr = -1
+
+function! s:RunShellCommand(cmdline) abort
+"{{{
+  let l:expanded_cmdline = a:cmdline 
+  for l:part in split(a:cmdline, ' ')
+     if l:part[0] =~ '\v[%#<]'
+        let l:expanded_part = fnameescape(expand(l:part))
+        let l:expanded_cmdline = substitute(l:expanded_cmdline, l:part, l:expanded_part, '')
+     endif
+  endfor
+
+  if g:shell_scratch_buffer_nr > -1
+    let l:win_nr = bufwinnr(g:shell_scratch_buffer_nr)
+    if l:win_nr < 0
+      execute 'bdelete' g:shell_scratch_buffer_nr
+      top new
+      let g:shell_scratch_buffer_nr = bufnr('%')
+    else
+      execute l:win_nr. ' wincmd w'
+      setlocal modifiable
+      %delete _
+    endif
+  else
+    top new
+    let g:shell_scratch_buffer_nr = bufnr('%')
+  endif
+
+  setlocal buftype=nofile bufhidden=wipe nobuflisted noswapfile nowrap
+  nnoremap <buffer> q :bdelete<CR> 
+  augroup ResetShellBufferNr
+    autocmd! * <buffer>
+    autocmd BufUnload <buffer> let g:shell_scratch_buffer_nr = -1
+  augroup END
+
+  " call setline(1, 'You entered:    ' . a:cmdline)
+  " call setline(2, 'Expanded Form:  ' .l:expanded_cmdline)
+  " call setline(3,substitute(getline(2),'.','=','g'))
+  execute '$read !'. l:expanded_cmdline
+  1
+
+  setlocal nomodifiable
+  if !exists('b:shell_line_count')
+    let b:shell_line_count = line('$')
+    if b:shell_line_count > 25
+      let b:shell_line_count = 20
+    endif
+    execute 'resize' b:shell_line_count + 1
+  endif
+
+  wincmd p
+endfunction
+"}}}