fix: load help.md from memory, not disk

src/Buffer.zig

@@ -996,6 +996,13 @@ pub fn load_from_string(self: *const Self, s: []const u8) !Root {
     return self.load(stream.reader(), s.len);
 }
 
+pub fn load_from_string_and_update(self: *Self, file_path: []const u8, s: []const u8) !void {
+    self.root = try self.load_from_string(s);
+    self.file_path = try self.a.dupe(u8, file_path);
+    self.last_save = self.root;
+    self.file_exists = false;
+}
+
 pub fn load_from_file(self: *const Self, file_path: []const u8, file_exists: *bool) !Root {
     const file = cwd().openFile(file_path, .{ .mode = .read_only }) catch |e| switch (e) {
         error.FileNotFound => return self.new_file(file_exists),

src/tui/editor.zig

@@ -340,7 +340,8 @@ pub const Editor = struct {
     fn open_scratch(self: *Self, file_path: []const u8, content: []const u8) !void {
         var new_buf = try Buffer.create(self.a);
         errdefer new_buf.deinit();
-        try new_buf.load_from_string(content);
+        try new_buf.load_from_string_and_update(file_path, content);
+        new_buf.file_exists = true;
         return self.open_buffer(file_path, new_buf);
     }
 
@@ -2603,7 +2604,7 @@ pub const Editor = struct {
         var file_path: []const u8 = undefined;
         var content: []const u8 = undefined;
         if (ctx.args.match(.{ tp.extract(&file_path), tp.extract(&content) }) catch false) {
-            self.open(file_path) catch |e| return tp.exit_error(e);
+            self.open_scratch(file_path, content) catch |e| return tp.exit_error(e);
             self.clamp();
         } else return tp.exit_error(error.InvalidArgument);
     }