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Ligature and Mark position

Posted: Mon Jun 08, 2020 8:10 am
by Husham
Hello,
I Would like to talk about some issue occur with Arabic ligature (lamalef-arab) there is more than 8 type, i will take one of them as example: this compose of ("lam-arab.init" and "alef-arab.fina" to compose "lamalef-arab.isol"). every thing is O.K when I position marks with open type feature window, BUT when it comes to test and put the marks it will decompose to its components (lam-arab.init and alef-arab.fina), the normal situation must be like figure 2 (Arial)
fig2.png
fig2.png (43.06 KiB) Viewed 3694 times
.

why this is occurred if the procedure is correct as you will see in the figure1?. is there any tricks designers used?? or there is some thing with open type feature?.
fig1.png
fig1.png (62.08 KiB) Viewed 3694 times
fig3.png
fig3.png (303.43 KiB) Viewed 3694 times
fig4.png
fig4.png (418.03 KiB) Viewed 3694 times
fig5.png
fig5.png (227.32 KiB) Viewed 3694 times

Re: Ligature and Mark position

Posted: Tue Jun 09, 2020 8:19 am
by Erwin Denissen
The marks must not be processed to form the ligature:
donotprocessmarks.png
donotprocessmarks.png (225 KiB) Viewed 3667 times

Re: Ligature and Mark position

Posted: Tue Jun 09, 2020 9:23 am
by Husham
Thank you Mr. Erwin, it is work now :)