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From: Ben Moon via ntg-context <ntg-context@ntg.nl>
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Subject: blockligatures removing characters
Date: Sat, 07 May 2022 16:49:27 +0100
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--83329461ad2a4c7d932fbc526bd0caef
Content-Type: text/plain

Hi List,

I'm using blockligatures to avoid the 'Th' ligature in some fonts but keep others. Recently I've found this removes the 'h' completely, i.e. 'Th' is changed to 'T', 'The' becomes 'Te' etc. 

Is there a way to restore the blockligatures functionality? I'm on ConTeXt version 2022.05.02 16:19.

Here is a MWE using Almendra (https://fonts.google.com/specimen/Almendra <https://fonts.google.com/specimen/Almendra?preview.text=Th%20Almost%20before%20we%20knew%20it,%20we%20had%20left%20the%20ground.%20&preview.text_type=custom>) from Google Fonts.

```
\starttypescriptcollection[myfont]

    \starttypescript[myfont]
        \definefontsynonym[Serif][Almendra-Regular][features=default]
    \stoptypescript
    
    \starttypescript[myfont]
        \definetypeface[\typescriptone][rm][serif][myfont][default][]
    \stoptypescript

\stoptypescriptcollection

\blockligatures[Th]

\definefontfeature[default][default][liga=yes]
\definefontfeature[default:nolig][default][liga=no]
\definefontfeature[default:blocklig][default][liga=yes,blockligatures=yes]

\setupbodyfont[myfont]

\starttext
    The This These have the Th ligature and others (fi)

    \definedfont[Serif*default:nolig]
    The This These have no ligatures (not fi)

    \definedfont[Serif*default:blocklig]
    The This These are missing the `h' (fi)
\stoptext
```

Best,
Ben
--83329461ad2a4c7d932fbc526bd0caef
Content-Type: text/html
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<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}</style></head><body><div>Hi List,<br></d=
iv><div><br></div><div>I'm using blockligatures to avoid the 'Th' ligatu=
re in some fonts but keep others. Recently I've found this removes the '=
h' completely, i.e. 'Th' is changed to 'T', 'The' becomes 'Te' etc.&nbsp=
;<br></div><div><br></div><div>Is there a way to restore the blockligatu=
res functionality? I'm on ConTeXt version&nbsp;2022.05.02 16:19.</div><d=
iv><br></div><div>Here is a MWE using Almendra (<a href=3D"https://fonts=
.google.com/specimen/Almendra?preview.text=3DTh%20Almost%20before%20we%2=
0knew%20it,%20we%20had%20left%20the%20ground.%20&amp;preview.text_type=3D=
custom">https://fonts.google.com/specimen/Almendra</a>) from Google Font=
s.<br></div><div><br></div><div>```<br></div><div>\starttypescriptcollec=
tion[myfont]<br></div><div><br></div><div>&nbsp;&nbsp;&nbsp; \starttypes=
cript[myfont]<br></div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \=
definefontsynonym[Serif][Almendra-Regular][features=3Ddefault]<br></div>=
<div>&nbsp;&nbsp;&nbsp; \stoptypescript<br></div><div>&nbsp;&nbsp;&nbsp;=
&nbsp;<br></div><div>&nbsp;&nbsp;&nbsp; \starttypescript[myfont]<br></di=
v><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \definetypeface[\types=
criptone][rm][serif][myfont][default][]<br></div><div>&nbsp;&nbsp;&nbsp;=
 \stoptypescript<br></div><div><br></div><div>\stoptypescriptcollection<=
br></div><div><br></div><div>\blockligatures[Th]<br></div><div><br></div=
><div>\definefontfeature[default][default][liga=3Dyes]<br></div><div>\de=
finefontfeature[default:nolig][default][liga=3Dno]<br></div><div>\define=
fontfeature[default:blocklig][default][liga=3Dyes,blockligatures=3Dyes]<=
br></div><div><br></div><div>\setupbodyfont[myfont]<br></div><div><br></=
div><div>\starttext<br></div><div>&nbsp;&nbsp;&nbsp; The This These have=
 the Th ligature and others (fi)<br></div><div><br></div><div>&nbsp;&nbs=
p;&nbsp; \definedfont[Serif*default:nolig]<br></div><div>&nbsp;&nbsp;&nb=
sp; The This These have no ligatures (not fi)<br></div><div><br></div><d=
iv>&nbsp;&nbsp;&nbsp; \definedfont[Serif*default:blocklig]<br></div><div=
>&nbsp;&nbsp;&nbsp; The This These are missing the `h' (fi)<br></div><di=
v>\stoptext<br></div><div></div><div>```</div><div><br></div><div>Best,<=
br></div><div>Ben<br></div></body></html>
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