据推测,Noto Nastaliq Urdu 字体不包含任何基本拉丁字形——因此会出现豆腐块。有两种可能的解决方案:
1. 切换到*确实*包含基本拉丁字符的 Nastaliq 字体,例如: software.sil.org/awami/
2. 点击右上角的 View/Edit... 按钮,在默认文本编辑器中编辑 changes.txt 文件(强烈推荐使用 Notepad++),但操作完成后,请导航到另一个选项卡(例如 XeTeX Log 选项卡),这样当自动保存(Autosave)启动时,就不会不断覆盖您在外部所做的更改。[另一个更麻烦的选项是停留在 changes.txt 上,但在 PTXprint 外部更新文件后点击“Refresh”按钮。]

Presumably the Noto Nastaliq Urdu font doesn't contain any of the basic latin glyphs - hence the tofu boxes. There are two possible solutions:
1. Switch to a Nastaliq font which *does* have Basic latin, for example: software.sil.org/awami/
2. Click on the View/Edit... button at the top right, to edit the changes.txt file in your default text editor (Notepad++ is highly recommended), but after doing so, navigate to a different tab (for example to the XeTeX Log tab) so that when Autosave kicks in, it doesn't keep wiping out the changes you made externally. [The other more painful option is to leave it on changes.txt but click the "Refresh" button after you have updated the file outside of PTXprint.]

机器翻译自 English