WIP rewriting generator for learning purposes

src/main.zig

@@ -22,6 +22,7 @@ fn reportParseErrors(tree: std.zig.Ast) !void {
         }
         try w.writeAll("^\n");
     }
+    try w.flush();
 }
 
 fn oomPanic() noreturn {
@@ -70,6 +71,9 @@ pub fn main() !void {
             ) catch |err| {
                 std.process.fatal("failed to write to stdout: {s}", .{@errorName(err)});
             };
+            w.interface.flush() catch |err| {
+                std.process.fatal("failed to flush stdout: {s}", .{@errorName(err)});
+            };
             return;
         } else if (std.mem.eql(u8, arg, "-a") or std.mem.eql(u8, arg, "--api")) {
             const api_str = args.next() orelse {