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-rw-r--r--Master/texmf-dist/tex/context/base/mkiv/font-imp-math.lua81
1 files changed, 81 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/mkiv/font-imp-math.lua b/Master/texmf-dist/tex/context/base/mkiv/font-imp-math.lua
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index 00000000000..d93ece4059b
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+++ b/Master/texmf-dist/tex/context/base/mkiv/font-imp-math.lua
@@ -0,0 +1,81 @@
+if not modules then modules = { } end modules ['font-imp-math'] = {
+ version = 1.001,
+ comment = "companion to font-ini.mkiv and hand-ini.mkiv",
+ author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+ copyright = "PRAGMA ADE / ConTeXt Development Team",
+ license = "see context related readme files"
+}
+
+if not context then return end
+
+local next, type, tonumber = next, type, tonumber
+
+local fonts = fonts
+local helpers = fonts.helpers
+local registerotffeature = fonts.handlers.otf.features.register
+
+local setmetatableindex = table.setmetatableindex
+
+-- requested for latex but not supported unless really needed in context:
+--
+-- registerotffeature {
+-- name = "ignoremathconstants",
+-- description = "ignore math constants table",
+-- initializers = {
+-- base = function(tfmdata,value)
+-- if value then
+-- tfmdata.mathparameters = nil
+-- end
+-- end
+-- }
+-- }
+
+-- tfmdata.properties.mathnolimitsmode = tonumber(value) or 0
+
+local splitter = lpeg.splitat(",",tonumber)
+local lpegmatch = lpeg.match
+
+local function initialize(tfmdata,value)
+ local mathparameters = tfmdata.mathparameters
+ if mathparameters then
+ local sup, sub
+ if type(value) == "string" then
+ sup, sub = lpegmatch(splitter,value)
+ if not sup then
+ sub, sup = 0, 0
+ elseif not sub then
+ sub, sup = sup, 0
+ end
+ elseif type(value) == "number" then
+ sup, sub = 0, value
+ end
+ if sup then
+ mathparameters.NoLimitSupFactor = sup
+ end
+ if sub then
+ mathparameters.NoLimitSubFactor = sub
+ end
+ end
+end
+
+registerotffeature {
+ name = "mathnolimitsmode",
+ description = "influence nolimits placement",
+ initializers = {
+ base = initialize,
+ node = initialize,
+ }
+}
+
+local function initialize(tfmdata,value)
+ tfmdata.properties.nostackmath = value and true
+end
+
+registerotffeature {
+ name = "nostackmath",
+ description = "disable math stacking mechanism",
+ initializers = {
+ base = initialize,
+ node = initialize,
+ }
+}