Duplicate definition of lookup 'kern_hebr' Found in: prefix 'Languagesystems', line 4

Roei · January 28, 2021, 3:42pm

Hi there!
I’m getting this error when exporting. Do you know what causing the problem?

Thanks!
Roei

Roei · January 28, 2021, 3:44pm

It happens to every font when I update the features :0

GeorgSeifert · January 29, 2021, 12:37am

What version of Glyphs do you have?

Did you open a .otf? Have a look in Font Info > Features > Prefixes > languagesystems and set it to “Generate Automatic”.

Roei · January 29, 2021, 9:01am

I have 3.0.2 and it set to automatic.

GeorgSeifert · January 29, 2021, 10:21am

Can you send me the .glyphs file?

Roei · January 29, 2021, 1:18pm

It’s happening with all my files actually. When I update the features. Maybe it relates to the version?

GeorgSeifert · January 29, 2021, 11:19pm

Then all of your file have a specific setting. It would help if I could try this.

iyadhgallah · January 30, 2021, 5:08pm

I have the same issue but with arabic, here is a screenshot:

Sometimes I have another strange behavior; when exporting as OTF, G3 quits expectedly, when exporting as TTF, I get the same message as above.

HadiTypeStudio · January 30, 2021, 5:21pm

I have the same problem
i have Version 3.0.3 (3059)
Screen Shot 2021-01-30 at 6.56.41 PM

iyadhgallah · January 31, 2021, 1:01pm

@GeorgSeifert I updated G3 and still getting the same error message! I think it is has something to do with kerning written by G2!

mekkablue · January 31, 2021, 6:41pm

G3 separates RTL from LTR kerning. G2 didn’t. So after file format conversion, the ‘old’ kerning is left under LTR. That probably causes the duplicate lookup. Working on a script that fixes this.

GeorgSeifert · February 1, 2021, 7:25pm

I have uploaded the script to the mekkablue repo and fixed the issue in Glyphs.

liron · February 2, 2021, 11:19pm

I’m having the same problem and cannot export. How is the script called? I was also unable to get the mekkablue scripts loaded to the G3.

I also tried to delete the “problematic” feature (I don’t need it) but it wouldn’t work too.

Thanks!

liron · February 2, 2021, 11:20pm

And I have the most updated version of G3 (just upgraded today, finally!)

GeorgSeifert · February 3, 2021, 1:58am

This is fixed in the cutting edge version (3.0.2-3061).

ebrahim · March 7, 2021, 7:21pm

I recently upgraded to Glyphs 3. (latest version 3.0.2)
But I have this problem and I can not get the output.

> Duplicate definition of lookup ‘kern_arab’

To test, I deleted all kerning and openType features. But the error was not fixed.

mekkablue · March 7, 2021, 7:22pm

In ss03? What does your ss03 look like?

ebrahim · March 7, 2021, 7:37pm

I guess it has not to do with ss03 because By clearing the ss03 glyphs. This error is attributed to the previous feature!

GeorgSeifert · March 7, 2021, 7:47pm

What version of Glyphs do you have? As mentioned above, this is fixed in the Cutting edge version. Activate it in “Preferences > Update > Show Cutting Edge Versions”.

ebrahim · March 7, 2021, 7:48pm

It all started when I added kerning for Arabic letters. (in Glyphs 3)