clear terminal on SIGTERM

src/auth.zig

@@ -363,7 +363,7 @@ fn createXauthFile(pwd: [:0]const u8) ![:0]const u8 {
 
     // Trim trailing slashes
     var i = xauth_dir.len - 1;
-    while (xauth_dir[i] == '/') : (i -= 1) {}
+    while (xauth_dir[i] == '/') i -= 1;
     const trimmed_xauth_dir = xauth_dir[0 .. i + 1];
 
     var buf: [256]u8 = undefined;

src/main.zig

@@ -23,6 +23,11 @@ const termbox = interop.termbox;
 
 const LY_VERSION = "1.0.0";
 
+pub fn signalHandler(i: c_int) callconv(.C) void {
+    termbox.tb_shutdown();
+    std.c.exit(i);
+}
+
 pub fn main() !void {
     var gpa = std.heap.GeneralPurposeAllocator(.{}){};
     defer _ = gpa.deinit();
@@ -118,6 +123,13 @@ pub fn main() !void {
     _ = termbox.tb_init();
     defer termbox.tb_shutdown();
 
+    const act = std.os.Sigaction{
+        .handler = .{ .handler = &signalHandler },
+        .mask = std.os.empty_sigset,
+        .flags = 0,
+    };
+    try std.os.sigaction(std.os.SIG.TERM, &act, null);
+
     _ = termbox.tb_select_output_mode(termbox.TB_OUTPUT_NORMAL);
     termbox.tb_clear();