Contextual Anchor Issue

Design
1

Hello.

I’m having this problem with Contextual Anchors, where they don’t seem to work at all.

Below is the screenshot of my setup. I’m using Glyphs 3 (3200).

Screenshot 2023-06-11 at 21.54.10
Screenshot 2023-06-11 at 21.54.10610×1196 82.3 KB

I want the botBelow in beh-ar.init to move down when it is followed by reh-ar.
I have defined the contextual anchor in behDotless-ar.init
and placed reh-ar * in the context.

It doesn’t seem to work for me.

Here is what it look like in InDesign (latest version).

Screenshot 2023-06-16 at 06.54.26
Screenshot 2023-06-16 at 06.54.261750×442 1.74 KB

The glyphs file is also attached.
Square Kufi Experiment.glyphs (32.1 KB)

System details:
MB Pro 2017.
MacOS: Ventura 13.4.
Processor: 2.9 GHz Quad-Core Intel Core i7.

This is was previously discussed here as well.

Thanks and regards.

2

Then you need to first decompose the beh. The contextual mark positioning is applied when the text is rendered and then the dot in the beh is a fixed part of the glyph.

3

Thanks for the reply.

Can you please suggest how do I approach it?
As the concept is not clear to me.

Thanks.

4

In the ccmp feature add something like this:

sub beh-ar by behDotless-ar dotbelow-ar;
5

Thanks.

Will try that at the earliest.
Do I need to do anything else?

6

Hello,

I placed sub beh-ar.init by behDotless-ar.init dotbelow-ar; in CCMP as you suggested.

Still not getting the desired position of dotbelow-ar of beh-ar.init when it is typed after reh-ar.
What am I missing?

Thanks.

7

when the ccmp is applied, there are no .init formes, yet. So you only need to decompose the default glyphs (the ones without a suffix).

8

Thanks for the reply.

I decomposed the beh-ar as you suggested.

then I figured out below code to attach dotbelow-ar to behDotless-ar.init:

markClass [dotbelow-ar] <anchor 50 150> @bottom;
pos base behDotless-ar.init <anchor 150 0> mark @bottom;

Please help with the contextual part.
Where dotbelow-ar of beh-ar.init moves down if it is preceded by reh-ar.

Thanks.

9

You don’t need to deal with the markClass and such. That is done automatically.

Make sure that the dotbelow-ar is set to Mark, Nonspacing and that it has a _bottom anchor.

Then add the context to the *bottom anchor like this

[reh-ar reh-ar.fina] *
10

Thanks @GeorgSeifert for the tip.

Will try it.

11

Is there a tutorial anywhere on contextual anchors? It’s the first time I heard this term.

12

They are described in the Handbook:

1 Like
13

hello,

this does not seem to work for me.

where do I put this contextual anchor?