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From: Xiao-Yong Jin <meta.jxy@gmail.com>
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Subject: vt(1) avoid white cursor on white background
Message-Id: <F4998E4F-A82D-46CA-9DA9-4FFD109F5511@gmail.com>
Date: Thu, 18 Oct 2018 13:33:41 -0500
To: 9front@9front.org
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X-Bullshit: advanced shared package-aware out-scaling locator 

This patch makes the cursor visible on white background.

diff -r 4c1c90cb3a47 sys/src/cmd/vt/main.c
--- a/sys/src/cmd/vt/main.c	Tue Oct 16 12:53:55 2018 -0700
+++ b/sys/src/cmd/vt/main.c	Thu Oct 18 13:30:08 2018 -0500
@@ -313,7 +313,7 @@
=20
 	red =3D allocimage(display, Rect(0,0,1,1), screen->chan, 1, =
DRed);
 	green =3D allocimage(display, Rect(0,0,1,1), screen->chan, 1, =
DGreen);
-	bordercol =3D allocimage(display, Rect(0,0,1,1), screen->chan, =
1, 0xCCCCCCCC);
+	bordercol =3D allocimage(display, Rect(0,0,1,1), screen->chan, =
1, blkbg ? 0xCCCCCCCC : 0x333333CC);
 	highlight =3D allocimage(display, Rect(0,0,1,1), =
CHAN1(CAlpha,8), 1, 0x80);
=20
 	for(i=3D0; i<8; i++){