Notify users of missing Python lazily (#1210)

Currently this message shows up with no context prior to the start of Vim. By changing this to a lazy message, the user will only be notified of a problem with the Black plugin when they are attempting to use the Black plugin. Co-authored-by: Łukasz Langa <[email protected]>
psf · Mar 3, 2020 · bbe5ae7 · bbe5ae7
1 parent 8fef74c
commit bbe5ae7
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/plugin/black.vim b/plugin/black.vim
@@ -14,7 +14,12 @@
 "    - restore cursor/window position after formatting
 
 if v:version < 700 || !has('python3')
-    echo "The black.vim plugin requires vim7.0+ with Python 3.6 support."
+    func! __BLACK_MISSING()
+        echo "The black.vim plugin requires vim7.0+ with Python 3.6 support."
+    endfunc
+    command! Black :call __BLACK_MISSING()
+    command! BlackUpgrade :call __BLACK_MISSING()
+    command! BlackVersion :call __BLACK_MISSING()
     finish
 endif