From 8f7fad32c275747b3a6aaae77dde9e59494483cc Mon Sep 17 00:00:00 2001
From: DuckDuckWhale <software@duckduckwhale.com>
Date: Sun, 6 Nov 2022 01:58:53 -0700
Subject: [PATCH] Fix: true color support in tmux and over SSH

---
 auto/tmux/.tmux.conf    |  1 +
 system/sshd/sshd_config |  2 +-
 utils/truecolor-test    | 15 +++++++++++++++
 3 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100755 utils/truecolor-test

diff --git a/auto/tmux/.tmux.conf b/auto/tmux/.tmux.conf
index d0b467f..4c90caa 100644
--- a/auto/tmux/.tmux.conf
+++ b/auto/tmux/.tmux.conf
@@ -1,6 +1,7 @@
 set -g clock-mode-style 12
 set -g default-command "${SHELL}"
 set -g default-terminal "tmux-256color"
+set -as terminal-features ",xterm-256color:RGB"
 set -g history-limit 10000
 set -g prefix C-q
 set -sg escape-time 25
diff --git a/system/sshd/sshd_config b/system/sshd/sshd_config
index 2017770..f990a91 100644
--- a/system/sshd/sshd_config
+++ b/system/sshd/sshd_config
@@ -11,5 +11,5 @@ UsePAM yes
 AllowTcpForwarding yes
 X11Forwarding yes
 PrintMotd no
-AcceptEnv LANG LC_*
+AcceptEnv LANG LC_* COLORTERM
 Subsystem sftp /usr/lib/openssh/sftp-server
diff --git a/utils/truecolor-test b/utils/truecolor-test
new file mode 100755
index 0000000..f266386
--- /dev/null
+++ b/utils/truecolor-test
@@ -0,0 +1,15 @@
+#!/bin/sh
+# https://github.com/termstandard/colors
+awk -v term_cols="${width:-$(tput cols || echo 80)}" 'BEGIN{
+    s="/\\";
+    for (colnum = 0; colnum<term_cols; colnum++) {
+        r = 255-(colnum*255/term_cols);
+        g = (colnum*510/term_cols);
+        b = (colnum*255/term_cols);
+        if (g>255) g = 510-g;
+        printf "\033[48;2;%d;%d;%dm", r,g,b;
+        printf "\033[38;2;%d;%d;%dm", 255-r,255-g,255-b;
+        printf "%s\033[0m", substr(s,colnum%2+1,1);
+    }
+    printf "\n";
+}'