Custom feature code error.... "lookupflag 0;"

Glyphs
1

Hi! I was trying to generate a Tamil font with custom code, but had an error.

The project generated just fine before I added kerning. After I opened the ufo in Robofont to tweak the spacing, and Metrics Machine for kerning, I brought it back into Glyphs and now it’s not generating.

I wrote the feature code using the features “akhn”, “psts”, and “dlig”. I haven’t used Glyphs much ( :flushed: ) so I am not sure how the marks/kerning features are automatically generated.

I pressed the compile button and had no errors, but after looking at the generateFont.command output, it looks like the error happens where a lookupflag 0; is automatically inserted after the kerning classes are named, and right before the “dist” (kern) feature.

here’s the error:

makeotfGlyphs [FATAL] <HuntTamil-Regular> expecting EOF (text was "lookupflag") [features.fea 195]

and here’s the area where it occurs:

@MMK_R_roundtamil = [ e-tamil ee-tamil o-tamil oo-tamil au-tamil nna-tamil nnna-tamil la-tamil lla-tamil va-tamil ssa-tamil sa-tamil ha-tamil om-tamil k_ssa_uMatra-tamil k_ssa_uuMatra-tamil nya_uMatra-tamil nya_uuMatra-tamil nna_iMatra-tamil nna_iiMatra-tamil nna_uMatra-tamil nna_uuMatra-tamil nnna_iMatra-tamil nnna_iiMatra-tamil nnna_uMatra-tamil nnna_uuMatra-tamil la_iMatra-tamil la_iiMatra-tamil la_uMatra-tamil la_uuMatra-tamil lla_iMatra-tamil lla_iiMatra-tamil lla_uMatra-tamil lla_uuMatra-tamil va_iMatra-tamil va_iiMatra-tamil va_uMatra-tamil va_uuMatra-tamil ssa_iMatra-tamil ssa_iiMatra-tamil ssa_uMatra-tamil ssa_uuMatra-tamil sa_iMatra-tamil sa_iiMatra-tamil sa_uMatra-tamil sa_uuMatra-tamil ha_iMatra-tamil ha_iiMatra-tamil ha_uMatra-tamil ha_uuMatra-tamil day-tamil credit-tamil aiMatra-tamil aulengthmark-tamil ];
lookupflag 0;

feature dist {
lookup dist_tamil {
	lookupflag IgnoreMarks;
	pos @MMK_L_concavetamil @MMK_R_atamil -50;
	pos @MMK_L_concavetamil @MMK_R_roundtamil -25;
	pos @MMK_L_concavetamil @MMK_R_katamil -35;
subtable;
} dist_tamil;
} dist;

Can someone reading please tell me what I should do to make this work, and why this is breaking? :slight_smile: Thanks so much!

2

What version of Glyphs do you have? Could you send me the .glyphs file?
Do you have any kerning between any none Indic glyphs? Can you try to add some?

3

hi!
Version 2.4.2 Just sent the file to info@glyphsapp.com
Actually there are only Indic glyphs in the font right now, but I could add a kern to the space character or make punctuation.

Thanks!!

4

Weird, when I changed the name of the .ufo and reopened it, it automatically took away the closing brackets of my features and moved them into additional “Languagesystems” prefix.

I also tried kerning a tamil glyph against the .notdef and got the same error.

5

Why?

6

didn’t have any latin glyphs in the font, just added this because Georg asked

7

Also, I’m not married to the feature code I wrote - if the Glyphs code does the same things (which I believe it would), I could just use that instead. But I tried to delete my features and use the auto-generated Tamil code and still had issues generating.