Request in source-foundry/Hack#230 (comment)

$ brew tap caskroom/fonts
$ brew cask install font-hack

运行font-spider命令，执行成功！但是生成的文件部分字体为NaN，导致font-family失效。
思源黑体，生成文件如下：
File font/SourceHanSans-ExtraLight.eot created: NaN KB
File font/SourceHanSans-ExtraLight.woff2 created: 1.024 KB
File font/SourceHanSans-ExtraLight.woff created: NaN KB
File font/SourceHanSans-ExtraLight.ttf created: 0 KB
File font/SourceHanSans-ExtraLight.svg created: NaN KB

Undefined offset: 1056 in /php-font-lib-master/src/FontLib/Table/Type/post.php
This happens when using the following font file:
https://s3-us-west-2.amazonaws.com/app.getstencil.com/upld86d1d1bf

Here's a screenshot of my OSX, showing that the file seems to be a proper font file:

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When I set a navigation bar like below, the icon gets cut off.

let settingsBarButton = UIBarButtonItem()
settingsBarButton.setIcon(icon: .emoji(.gear), iconSize: 30)
navigationItem.rightBarButtonItems = [settingsBarButton]

Not sure what's wrong since the example in

First I'm not a native English speaking person.
so you can correct it where it is wrong grammar/ wrong intention or not proper.

You CAN HELP ME create the topics that you want to know.
so I will create a description for it

:)