From 4090b92ac461448c28cb903f685226fc9e0266d9 Mon Sep 17 00:00:00 2001
From: nsfisis <nsfisis@gmail.com>
Date: Thu, 3 Jun 2021 23:39:32 +0900
Subject: Enable truecolor (24-bit color) in terminal

---
 .tmux.conf |  8 +++++++-
 .vimrc     |  6 +++---
 .zshrc     | 17 +++++++++++++++++
 3 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/.tmux.conf b/.tmux.conf
index 7508c9d..afc36f8 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -12,7 +12,13 @@
 # BASICS {{{2
 set-option -g base-index 1
 set-option -g pane-base-index 1
-set-option -g default-shell /bin/zsh
+set-option -g default-shell /usr/local/bin/zsh
+
+# TERMINAL FEATURES {{{2
+set-option -g default-terminal screen-256color
+set-option -ga terminal-overrides ',xterm-256color:Tc'
+set-option -ga terminal-overrides ',*:Smulx=\e[4::%p1%dm'
+set-option -ga terminal-overrides ',*:Setulc=\e[58::2::%p1%{65536}%/%d::%p1%{256}%/%{255}%&%d::%p1%{255}%&%d%;m'
 
 # APPEARANCE {{{2
 set-option -g status-justify centre
diff --git a/.vimrc b/.vimrc
index b27e206..0c18da5 100644
--- a/.vimrc
+++ b/.vimrc
@@ -148,9 +148,9 @@ set hlsearch
 " .vimrc.
 nohlsearch
 if exists('+termguicolors')
-    if g:MY_ENV.os ==# 'mac'
-        set termguicolors
-    endif
+    let &t_8f="\<Esc>[38;2;%lu;%lu;%lum"
+    let &t_8b="\<Esc>[48;2;%lu;%lu;%lum"
+    set termguicolors
 endif
 set t_Co=256
 set nocursorline
diff --git a/.zshrc b/.zshrc
index 2f61594..640ab96 100644
--- a/.zshrc
+++ b/.zshrc
@@ -313,6 +313,23 @@ function 256colors() {
     done
 }
 
+function truecolors() {
+    awk 'BEGIN{
+        s="/\\/\\/\\/\\/\\"; s=s s s s s s s s;
+        for (colnum = 0; colnum < 77; colnum++) {
+            r = 255 - (colnum * 255 / 76);
+            g = (colnum * 510 / 76);
+            b = (colnum * 255 / 76);
+            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 + 1, 1);
+        }
+        printf "\n";
+    }'
+}
+
 
 
 # noxxx on  => xxx off
-- 
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