From d879d2f21617cb2e8482b7fd32ac2fb02c5494d1 Mon Sep 17 00:00:00 2001
From: Daniel Hahler <git@thequod.de>
Date: Thu, 21 Mar 2019 17:39:16 +0100
Subject: [PATCH] jedi#show_documentation: check len of
 g:jedi#documentation_command

---
 autoload/jedi.vim | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/autoload/jedi.vim b/autoload/jedi.vim
index dd6d7cc..4062c30 100644
--- a/autoload/jedi.vim
+++ b/autoload/jedi.vim
@@ -377,7 +377,9 @@ function! jedi#show_documentation() abort
 
     " quit comands
     nnoremap <buffer> q ZQ
-    execute 'nnoremap <buffer> '.g:jedi#documentation_command.' ZQ'
+    if len(g:jedi#documentation_command)
+      execute 'nnoremap <buffer> '.g:jedi#documentation_command.' ZQ'
+    endif
 endfunction
 
 " ------------------------------------------------------------------------