commit aa04e1b0be343ff606e25a48d59bc057edcc6e87
author Yasuhiro Matsumoto <mattn.jp@gmail.com> Sat May 07 14:09:19 2022 +0100
committer Bram Moolenaar <Bram@vim.org> Sat May 07 14:09:19 2022 +0100
tree 1a57bb0e3551d13aade2b2ed0ca413c6b9a062d3
parent 3f1cfcb86407c15a3037d5595bb192a00c661303

patch 8.2.4906: MS-Windows: cannot use transparent background

Problem:    MS-Windows: cannot use transparent background.
Solution:   Make transparent background work with 'termguicolors' and NONE
            background color. (Yasuhiro Matsumoto, closes #10310, closes #7162)

src/term.c

diff --git a/src/term.c b/src/term.c
index 9cc480e..84d6bd5 100644
--- a/src/term.c
+++ b/src/term.c
@@ -3084,7 +3084,8 @@
     void
 term_bg_rgb_color(guicolor_T rgb)
 {
-    term_rgb_color(T_8B, rgb);
+    if (rgb != INVALCOLOR)
+	term_rgb_color(T_8B, rgb);
 }
 
     void