terminfo: switch to semicolon SGR 48 to prevent render issues

src/terminal/Parser.zig

@@ -531,6 +531,35 @@ test "csi: SGR ESC [ 38 : 2 m" {
     }
 }
 
+test "csi: SGR ESC [ 48 : 2 m" {
+    var p = init();
+    _ = p.next(0x1B);
+    for ("[48:2:240:143:104") |c| {
+        const a = p.next(c);
+        try testing.expect(a[0] == null);
+        try testing.expect(a[1] == null);
+        try testing.expect(a[2] == null);
+    }
+
+    {
+        const a = p.next('m');
+        try testing.expect(p.state == .ground);
+        try testing.expect(a[0] == null);
+        try testing.expect(a[1].? == .csi_dispatch);
+        try testing.expect(a[2] == null);
+
+        const d = a[1].?.csi_dispatch;
+        try testing.expect(d.final == 'm');
+        try testing.expect(d.sep == .colon);
+        try testing.expect(d.params.len == 5);
+        try testing.expectEqual(@as(u16, 48), d.params[0]);
+        try testing.expectEqual(@as(u16, 2), d.params[1]);
+        try testing.expectEqual(@as(u16, 240), d.params[2]);
+        try testing.expectEqual(@as(u16, 143), d.params[3]);
+        try testing.expectEqual(@as(u16, 104), d.params[4]);
+    }
+}
+
 test "csi: SGR ESC [4:3m colon" {
     var p = init();
     _ = p.next(0x1B);

src/terminal/sgr.zig

@@ -467,6 +467,16 @@ test "sgr: 256 color" {
     try testing.expect(p.next().? == .@"256_bg");
 }
 
+test "sgr: 24-bit bg color" {
+    {
+        const v = testParseColon(&[_]u16{ 48, 2, 1, 2, 3 });
+        try testing.expect(v == .direct_color_bg);
+        try testing.expectEqual(@as(u8, 1), v.direct_color_bg.r);
+        try testing.expectEqual(@as(u8, 2), v.direct_color_bg.g);
+        try testing.expectEqual(@as(u8, 3), v.direct_color_bg.b);
+    }
+}
+
 test "sgr: underline color" {
     {
         const v = testParseColon(&[_]u16{ 58, 2, 1, 2, 3 });

src/terminal/stream.zig

@@ -48,7 +48,7 @@ pub fn Stream(comptime Handler: type) type {
             tracy.value(@intCast(u64, c));
             defer tracy.end();
 
-            //log.debug("char: {x}", .{c});
+            // log.debug("char: {c}", .{c});
             const actions = self.parser.next(c);
             for (actions) |action_opt| {
                 // if (action_opt) |action| {

src/terminfo/ghostty.zig

@@ -39,7 +39,7 @@ pub const ghostty: Source = .{
         .{ .name = "ccc", .value = .{ .boolean = {} } },
 
         // supports changing the window title.
-        //.{ .name = "hs", .value = .{ .boolean = {} } },
+        .{ .name = "hs", .value = .{ .boolean = {} } },
 
         // terminal has a meta key
         .{ .name = "km", .value = .{ .boolean = {} } },
@@ -155,7 +155,9 @@ pub const ghostty: Source = .{
         .{ .name = "rmxx", .value = .{ .string = "\\E[29m" } },
         .{ .name = "setab", .value = .{ .string = "\\E[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m" } },
         .{ .name = "setaf", .value = .{ .string = "\\E[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m" } },
-        .{ .name = "setrgbb", .value = .{ .string = "\\E[48:2:%p1%d:%p2%d:%p3%dm" } },
+        .{ .name = "setrgbb", .value = .{ .string = "\\E[48;2;%p1%d;%p2%d;%p3%dm" } },
+        // This causes weird rendering issues, why?
+        //.{ .name = "setrgbb", .value = .{ .string = "\\E[48:2:%p1%d:%p2%d:%p3%dm" } },
         .{ .name = "setrgbf", .value = .{ .string = "\\E[38:2:%p1%d:%p2%d:%p3%dm" } },
         .{ .name = "sgr", .value = .{ .string = "%?%p9%t\\E(0%e\\E(B%;\\E[0%?%p6%t;1%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t;5%;%?%p7%t;8%;m" } },
         .{ .name = "sgr0", .value = .{ .string = "\\E(B\\E[m" } },