<!DOCTYPE html>
<html>
<head>
<style>
@font-face {
    font-family: FilicudiDummy-Barber;
    src:url("resources/Filicudi Dummy BSD2/FilicudiDummy-Barber.otf") format("opentype");
}
</style>
</head>
<body>
This test makes sure that GSUB can affect the rendered space glyph. This is a font which has
multiple alternates of the space glyph. The test passes if the correct alternate is used.
You can see this visually if the vertical lines consistently alternate between red and blue.
<div style="font: 4em 'FilicudiDummy-Barber'; font-feature-settings: 'ABCD';">H H</div>
</body>
</html>