Ligatures not rendering

[dragondgold]

Expected Behavior

The font should be rendered with ligatures:

Current Behavior

The font is rendered without ligatures, although they are being detected in the gsub table as far as I understand:

Possible Solution

I don't know actually, I don't have much experience on the font file internals, but I'm open to working on the issue if someone is willing to guide me a little

Steps to Reproduce (for bugs)

1. Go to https://opentype.js.org/
2. Upload the TTF font Pecita.zip
3. Make sure ligatures are enabled
4. Write the word "quick" or any other word, the font is not rendered with ligatures

Context

I have an app where users can write text on the browser using any font and export the text as SVG, it works great for most fonts, some of them have issues, converting them from TTF to OTF or vice-versa or re-exporting them with FontForge fixes most issues, in this case, I couldn't fix the issue by doing that in this case.

Your Environment

• Version used: Opentype.js 1.3.1
• Font used: Pecita.zip
• Browser Name and version: Chrome Version 91.0.4472.114
• Operating System and version (desktop or mobile): Windows 10 21H1 x64

[ILOVEPIE]

You have to ask opentype.js to use ligatures, by default it does not.

[Connum]

As it says "make sure ligatures are enabled" in the steps to reproduce, I think we need to look into this. Or did you try it out and it worked on your end @ILOVEPIE? In that case it might have been fixed in the meantime, as the issue is already 2 years old.

[ILOVEPIE]

The cause of this has been determined, I've created a new issue with the specific information on the bug, we will move discussion of this issue to there.