Merge #5542 from mhinz/health/clipboard

CheckHealth: add clipboard check

runtime/autoload/health/provider.vim

@@ -45,6 +45,19 @@ function! s:download(url) abort
   return 'missing `curl` and `python`, cannot make pypi request'
 endfunction
 
+" Check for clipboard tools.
+function! s:check_clipboard() abort
+  call health#report_start('Clipboard')
+
+  let clipboard_tool = provider#clipboard#Executable()
+  if empty(clipboard_tool)
+    call health#report_warn(
+          \ "No clipboard tool found. Using the system clipboard won't work.",
+          \ ['See ":help clipboard"'])
+  else
+    call health#report_ok('Clipboard tool found: '. clipboard_tool)
+  endif
+endfunction
 
 " Get the latest Neovim Python client version from PyPI.
 function! s:latest_pypi_version() abort
@@ -371,6 +384,7 @@ function! s:check_ruby() abort
 endfunction
 
 function! health#provider#check() abort
+  call s:check_clipboard()
   call s:check_python(2)
   call s:check_python(3)
   call s:check_ruby()

runtime/autoload/provider/clipboard.vim

@@ -31,34 +31,51 @@ function! s:try_cmd(cmd, ...)
 endfunction
 
 let s:cache_enabled = 1
-if executable('pbcopy')
+let s:err = ''
-  let s:copy['+'] = 'pbcopy'
+
-  let s:paste['+'] = 'pbpaste'
+function! provider#clipboard#Error() abort
-  let s:copy['*'] = s:copy['+']
+  return s:err
-  let s:paste['*'] = s:paste['+']
+endfunction
-  let s:cache_enabled = 0
+
-elseif exists('$DISPLAY') && executable('xsel')
+function! provider#clipboard#Executable() abort
-  let s:copy['+'] = 'xsel --nodetach -i -b'
+  if executable('pbcopy')
-  let s:paste['+'] = 'xsel -o -b'
+    let s:copy['+'] = 'pbcopy'
-  let s:copy['*'] = 'xsel --nodetach -i -p'
+    let s:paste['+'] = 'pbpaste'
-  let s:paste['*'] = 'xsel -o -p'
+    let s:copy['*'] = s:copy['+']
-elseif exists('$DISPLAY') && executable('xclip')
+    let s:paste['*'] = s:paste['+']
-  let s:copy['+'] = 'xclip -quiet -i -selection clipboard'
+    let s:cache_enabled = 0
-  let s:paste['+'] = 'xclip -o -selection clipboard'
+    return 'pbcopy'
-  let s:copy['*'] = 'xclip -quiet -i -selection primary'
+  elseif exists('$DISPLAY') && executable('xsel')
-  let s:paste['*'] = 'xclip -o -selection primary'
+    let s:copy['+'] = 'xsel --nodetach -i -b'
-elseif executable('lemonade')
+    let s:paste['+'] = 'xsel -o -b'
-  let s:copy['+'] = 'lemonade copy'
+    let s:copy['*'] = 'xsel --nodetach -i -p'
-  let s:paste['+'] = 'lemonade paste'
+    let s:paste['*'] = 'xsel -o -p'
-  let s:copy['*'] = 'lemonade copy'
+    return 'xsel'
-  let s:paste['*'] = 'lemonade paste'
+  elseif exists('$DISPLAY') && executable('xclip')
-elseif executable('doitclient')
+    let s:copy['+'] = 'xclip -quiet -i -selection clipboard'
-  let s:copy['+'] = 'doitclient wclip'
+    let s:paste['+'] = 'xclip -o -selection clipboard'
-  let s:paste['+'] = 'doitclient wclip -r'
+    let s:copy['*'] = 'xclip -quiet -i -selection primary'
-  let s:copy['*'] = s:copy['+']
+    let s:paste['*'] = 'xclip -o -selection primary'
-  let s:paste['*'] = s:paste['+']
+    return 'xclip'
-else
+  elseif executable('lemonade')
-  echom 'clipboard: No clipboard tool available. See :help clipboard'
+    let s:copy['+'] = 'lemonade copy'
+    let s:paste['+'] = 'lemonade paste'
+    let s:copy['*'] = 'lemonade copy'
+    let s:paste['*'] = 'lemonade paste'
+    return 'lemonade'
+  elseif executable('doitclient')
+    let s:copy['+'] = 'doitclient wclip'
+    let s:paste['+'] = 'doitclient wclip -r'
+    let s:copy['*'] = s:copy['+']
+    let s:paste['*'] = s:paste['+']
+    return 'doitclient'
+  endif
+
+  let s:err = 'clipboard: No clipboard tool available. See :help clipboard'
+  return ''
+endfunction
+
+if empty(provider#clipboard#Executable())
   finish
 endif