On 7/20/2022 9:40 PM, Bruce Horrocks via ntg-context wrote:
On 20 Jul 2022, at 05:31, Michael Urban via ntg-context <ntg-context@ntg.nl>
wrote:
Aside from purchasing a real font product from Linotype at enormous expense and
hoping it is better equipped, is there a way to coerce ConTeXt into using the
ligature glyphs for fi and fl?
Yes - I had to do the same for a font called Venetian 301 for which I found
these 4 files:
Filename Name as it appears to MacOS
-------- --------------------------
Venetian301BT-Roman.otf Venetian 301 Regular
Venetian301BT-Italic.otf Venetian 301 Italic
Venetian301BT-Bold.otf Venetian 301 Bold
venetian-301-demi-bt.ttf Venetian Dm BT Demi
They each had the fi and fl ligatures, but at different character positions
depending on which file, and they weren't recognised by default. So I used the
following code to add them (and add en and em dash substitution as well).
%% ---- start
\startluacode
fonts.handlers.otf.addfeature {
name = "v1", -- these character substitutions will be applied to
venetian-301-demi-bt
type = "ligature",
data = {
[0xF001] = { "f", "i" },
[0xF002] = { "f", "l" },
}
}
fonts.handlers.otf.addfeature {
name = "v2", -- these character substitutions will be applied to
Venetian301BT
type = "ligature",
data = {
[0xFB01] = { "f", "i" },
[0xFB02] = { "f", "l" },
}
}
fonts.handlers.otf.addfeature {
name = "v3", -- these character substitutions will be applied to both
type = "ligature",
data = {
[0x2013] = { "-", "-" }, -- en dash
[0x2014] = { "-", "-", "-" }, -- em dash
}
}
\stopluacode
\definefontfeature [venetian-301-demi-ligatures] [v1=yes,v3=yes]
\definefontfeature [venetian-301-BT-ligatures] [v2=yes,v3=yes]
\starttypescript [serif] [myBookFont]
\definefontsynonym [Serif] [file:venetian-301-demi-bt]
[features=venetian-301-demi-ligatures]
\definefontsynonym [SerifBold] [file:Venetian301BT-Bold]
[features=venetian-301-BT-ligatures]
\definefontsynonym [SerifItalic] [file:Venetian301BT-Italic]
[features=venetian-301-BT-ligatures]
\stoptypescript
%% ---- end
Note that the names v1, v2 and v3 are entirely arbitrary. Also, the
\starttypescript section sets the font features to be just those I've defined -
potentially losing whatever 'default' would provide. But since the font doesn't
seem to have a lot of features in the first place I've so far not noticed any
problems. I'm sure a real expert could tell you how to retain 'default' and add
the ligatures, if needed.
just name them 'liga' and default will then do them
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Hans Hagen | PRAGMA ADE
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