From 4ffd5cd9941d8e55f980ee51907141dc72b2fd71 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Fri, 26 Aug 2022 09:56:17 -0700
Subject: [PATCH] SGR 39/49 (reset fg/bg, respectively)

---
 src/terminal/Terminal.zig | 4 ++++
 src/terminal/sgr.zig      | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/src/terminal/Terminal.zig b/src/terminal/Terminal.zig
index ee2629ea0..5a860e5b3 100644
--- a/src/terminal/Terminal.zig
+++ b/src/terminal/Terminal.zig
@@ -324,6 +324,10 @@ pub fn setAttribute(self: *Terminal, attr: sgr.Attribute) !void {
 
         .@"8_bg" => |n| self.screen.cursor.pen.bg = color.default[@enumToInt(n)],
 
+        .reset_fg => self.screen.cursor.pen.fg = null,
+
+        .reset_bg => self.screen.cursor.pen.bg = null,
+
         .@"8_bright_fg" => |n| self.screen.cursor.pen.fg = color.default[@enumToInt(n)],
 
         .@"8_bright_bg" => |n| self.screen.cursor.pen.bg = color.default[@enumToInt(n)],
diff --git a/src/terminal/sgr.zig b/src/terminal/sgr.zig
index d2e41d31e..0aa1b9b19 100644
--- a/src/terminal/sgr.zig
+++ b/src/terminal/sgr.zig
@@ -41,6 +41,10 @@ pub const Attribute = union(enum) {
     @"8_bg": color.Name,
     @"8_fg": color.Name,
 
+    /// Reset the fg/bg to their default values.
+    reset_fg: void,
+    reset_bg: void,
+
     /// Set the background/foreground as a named bright color attribute.
     @"8_bright_bg": color.Name,
     @"8_bright_fg": color.Name,
@@ -118,6 +122,8 @@ pub const Parser = struct {
                 };
             },
 
+            39 => return Attribute{ .reset_fg = {} },
+
             40...47 => return Attribute{
                 .@"8_bg" = @intToEnum(color.Name, slice[0] - 40),
             },
@@ -144,6 +150,8 @@ pub const Parser = struct {
                 };
             },
 
+            49 => return Attribute{ .reset_bg = {} },
+
             90...97 => return Attribute{
                 .@"8_bright_fg" = @intToEnum(color.Name, slice[0] - 90),
             },