termio: hook up OSC8

src/terminal/stream.zig

@@ -1335,12 +1335,17 @@ pub fn Stream(comptime Handler: type) type {
                 },
 
                 .hyperlink_start => |v| {
-                    _ = v;
+                    if (@hasDecl(T, "startHyperlink")) {
-                    @panic("TODO(osc8)");
+                        try self.handler.startHyperlink(v.uri, v.id);
+                        return;
+                    } else log.warn("unimplemented OSC callback: {}", .{cmd});
                 },
 
                 .hyperlink_end => {
-                    @panic("TODO(osc8)");
+                    if (@hasDecl(T, "endHyperlink")) {
+                        try self.handler.endHyperlink();
+                        return;
+                    } else log.warn("unimplemented OSC callback: {}", .{cmd});
                 },
             }
 

src/termio/Exec.zig

@@ -2358,6 +2358,14 @@ const StreamHandler = struct {
         }
     }
 
+    pub fn startHyperlink(self: *StreamHandler, uri: []const u8, id: ?[]const u8) !void {
+        try self.terminal.screen.startHyperlink(uri, id);
+    }
+
+    pub fn endHyperlink(self: *StreamHandler) !void {
+        self.terminal.screen.endHyperlink();
+    }
+
     pub fn deviceAttributes(
         self: *StreamHandler,
         req: terminal.DeviceAttributeReq,