Make sure the new encoding slot you created, is selected, thenĪ) click ‘Element>Build>Build Composite Glyph’. Next, we need to build a composite glyph that will go into the new encoding slot. We have now completed adding a ligature substitution lookup table and you should be back in ‘Font View’, ready for the next step. We will type: t t making sure to separate each glyph with a space.Ĭ) To view your entries you can hover your mouse over the source glyphs and a pop up will appear.Ī) click ‘OK’ to commit and save your ligature substitution lookup table. We’ll do this by typing the letters into the right hand column called ‘Source Glyph Names’.ī) If your ligature is made up of more than 1 source glyph, separate them with a ‘space’. Next, we’ll need to associate our ligature glyphs with their default source glyphs. The subtable name will be added to the subtable column on the left. To add the corresponding ligature substitution subtable go ahead and,Ī) Click ‘OK’ to accept the default name, or change it. The next step in this tutorial will guide you through the process of naming and completing this subtable. The ‘Lookup Name’ will now be auto populated and a ‘liga’ will be added to the feature column.Ī) You can either keep the default ‘Lookup Name’ or change it.Ī) Go ahead and untick ‘Store ligature data in AFM files’,Ī new dialogue box will pop up asking you to name this subtable. To create a ligature substitution lookup table, make sure you’re still in the ‘Glyph Info’ dialogue box from the previous step.Ī) Now select ‘Ligatures’ in the left hand column, thenĪ) select ‘Ligature Substitution’ from the drop down list at the top, next to the word ‘Type:’.ī) Now click on the little button next to to add a new line, which should also trigger a drop down list. Once you’ve named your new encoding slot, we’ll move on to creating a ligature substitution lookup table. Note it is standard practice for ligatures to have an underscore ( _ ) separating glyphs, although Fontforge seems to recognize either an underscore (f_i) or, no underscore (fi) for the output fi.Ī) or this tutorial, we’ll be using an underscore ( _ ).įor a detailed explanation of the Glyph Info dialogue box visit Fontforge’s userguide. On the next screen, make sure ‘Unicode’ is selected in the left hand column then,Ī) In the box next to ‘Glyph Name’, manually type in the name of your glyph. Now we need to name our new encoding slot.Ĭlick on the new encoding slot glyph cell, The new encoding slot will be added to the end and right at the bottom of ‘Font View’. This tutorial is shown on a Windows 10 computer with Fontforge version 03142020.įor this tutorial we’ll be adding a new encoding slot for the ‘tt’ ligature, however you can also,Ī) use one of the Private Use Area (PUA) Unicode slots which start at E000, orī) use one of the Unicode slots for ligatures at FB00, orĪ) Click on ‘Encoding>Add Encoding Slots’ī) Insert the number of encoding slots to add. It’s a free font for personal and commercial use with an open source license. The font used in this tutorial is called Belmist. You can download Fontforge for Windows, Mac, or Linux from here.
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