From 4f134f34ecce1db45309983ba1eaa05e1e92333f Mon Sep 17 00:00:00 2001
From: peter <peter.grossmann@synoptics.de>
Date: Wed, 31 Aug 2022 09:34:35 +0200
Subject: [PATCH] add preview flag in vim plugin

---
 autoload/black.vim | 2 ++
 plugin/black.vim   | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/autoload/black.vim b/autoload/black.vim
index ed657be7bd3..2edd27edc21 100644
--- a/autoload/black.vim
+++ b/autoload/black.vim
@@ -30,6 +30,7 @@ FLAGS = [
   Flag(name="skip_string_normalization", cast=strtobool),
   Flag(name="quiet", cast=strtobool),
   Flag(name="skip_magic_trailing_comma", cast=strtobool),
+  Flag(name="preview", cast=strtobool),
 ]
 
 
@@ -145,6 +146,7 @@ def Black(**kwargs):
     string_normalization=not configs["skip_string_normalization"],
     is_pyi=vim.current.buffer.name.endswith('.pyi'),
     magic_trailing_comma=not configs["skip_magic_trailing_comma"],
+    preview=not configs["preview"],
     **black_kwargs,
   )
   quiet = configs["quiet"]
diff --git a/plugin/black.vim b/plugin/black.vim
index 3fc11fe9e8d..fb70424b0ef 100644
--- a/plugin/black.vim
+++ b/plugin/black.vim
@@ -63,6 +63,9 @@ endif
 if !exists("g:black_target_version")
   let g:black_target_version = ""
 endif
+if !exists("g:black_preview")
+  let g:black_preview = 0
+endif
 
 function BlackComplete(ArgLead, CmdLine, CursorPos)
   return [