From 4d2d4322f42cf14664f21fa4bd4062476a2cffeb Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Fri, 24 Jun 2022 18:00:42 -0700
Subject: [PATCH] implement VT

---
 src/Window.zig          | 1 -
 src/terminal/ansi.zig   | 2 ++
 src/terminal/stream.zig | 6 ++++++
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Window.zig b/src/Window.zig
index 85603e031..6167ca5a4 100644
--- a/src/Window.zig
+++ b/src/Window.zig
@@ -642,7 +642,6 @@ pub fn setCursorRow(self: *Window, row: u16) !void {
 }
 
 pub fn setCursorPos(self: *Window, row: u16, col: u16) !void {
-    if (self.terminal.mode_origin) unreachable; // TODO
     self.terminal.setCursorPos(row, col);
 }
 
diff --git a/src/terminal/ansi.zig b/src/terminal/ansi.zig
index f64fcf1c8..f34acf008 100644
--- a/src/terminal/ansi.zig
+++ b/src/terminal/ansi.zig
@@ -13,6 +13,8 @@ pub const C0 = enum(u7) {
     HT = 0x09,
     /// Line feed
     LF = 0x0A,
+    /// Vertical Tab
+    VT = 0x0B,
     /// Carriage return
     CR = 0x0D,
 };
diff --git a/src/terminal/stream.zig b/src/terminal/stream.zig
index b49ae6b1d..2ab33dcf7 100644
--- a/src/terminal/stream.zig
+++ b/src/terminal/stream.zig
@@ -90,6 +90,12 @@ pub fn Stream(comptime Handler: type) type {
                 else
                     log.warn("unimplemented execute: {x}", .{c}),
 
+                // VT is same as LF
+                .VT => if (@hasDecl(T, "linefeed"))
+                    try self.handler.linefeed()
+                else
+                    log.warn("unimplemented execute: {x}", .{c}),
+
                 .CR => if (@hasDecl(T, "carriageReturn"))
                     try self.handler.carriageReturn()
                 else