List OT features of a font with script/app?

Thomas Schostok

Hello,
anyone knows a simple app or script (OS X) that list all OT features (e.g. “dlig”) of a .OTF file?
I like to test around 50 fonts of which features are implemented and I don’t like to import all the fonts into Fontlab.
Thanks,
Thomas

LeMo aka PatternMan aka Frank E Blokland

If you not begrudge us premium champagne with our daily lobster, then go for the OTM summer promo (left column). Otherwise you could try the free OTM 2.0 version (right column).

Thomas Schostok

For now, I try to use the free OTM version, because I’m addicted to caviar and whiskey and need all my money for that, Frank. ;-)
Thanks Frank, that’s exactly what I was looking for! You are my first class hero!
Thomas

Georg Seifert

you could write a script that uses fonttools to read the feature tags.

LeMo aka PatternMan aka Frank E Blokland

Hi Georg,

‘you could write a script that uses fonttools to read the feature tags. ’

How much sense does that make now Thomas' problem seems to be conveniently solved? Reminds me a bit of a student who stated after I demonstrated the subsetting of OT Layout features in the DTL/URW++ tools (since 2002), that she would wait with applying until this functionality would become available in her preferred font editor.

James Puckett

How much sense does that make now Thomas' problem seems to be conveniently solved?

OTM is a wonderful application, but a decent coder could write a shell script that analyzes all 50 fonts and spit out a report. If Thomas has to do this sort of thing on a regular basis a script would be a good use of his time.

Jason Campbell

Agreed. a Python script using fonttools would be very simple.

Khaled Hosny

I’d use LCDF's otfinfo tool. Here showing the features of the latn script (the tool’s default):

~$ otfinfo -f amiri-regular.ttf 
calt	Contextual Alternates
ccmp	Glyph Composition/Decomposition
fina	Terminal Forms
init	Initial Forms
kern	Kerning
liga	Standard Ligatures
mark	Mark Positioning
medi	Medial Forms
pnum	Proportional Figures
rlig	Required Ligatures
rtlm	Right-to-left Mirrored Forms
ss01	Stylistic Set 1
ss02	Stylistic Set 2
ss04	Stylistic Set 4
ss05	Stylistic Set 5

And here explicitly asking for the arab script:

~$ otfinfo -f --script=arab amiri-regular.ttf 
calt	Contextual Alternates
ccmp	Glyph Composition/Decomposition
curs	Cursive Positioning
fina	Terminal Forms
init	Initial Forms
kern	Kerning
liga	Standard Ligatures
locl	Localized Forms
mark	Mark Positioning
medi	Medial Forms
mkmk	Mark to Mark Positioning
pnum	Proportional Figures
rlig	Required Ligatures
rtlm	Right-to-left Mirrored Forms
ss01	Stylistic Set 1
ss02	Stylistic Set 2
ss03	Stylistic Set 3
ss04	Stylistic Set 4
ss05	Stylistic Set 5

Thomas Schostok

Well, I used OTM for the job, but after 20 fonts it got quite repetitive. It’s not the fault of OTM, of course, but I believe it really would be easier to have a script of some sort.
otfinfo is a good tip, thanks Khaled. I will try that out, but I believe to install it via homebrew & co. is not the easiest way for me (form the way of understanding of how to do).

LeMo aka PatternMan aka Frank E Blokland

LeMo aka PatternMan aka Frank E Blokland

Of course, a nice extra of OTM is that one can see what the features actually do.