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diff --git a/fonts/lete-sans-math/lete-sans-math.sty b/fonts/lete-sans-math/lete-sans-math.sty
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+\NeedsTeXFormat{LaTeX2e}[2022/06/01]
+\def\fileversion{0.41}
+\def\filedate{2024-07-17}
+\ProvidesPackage{lete-sans-math}[\filedate\space\fileversion]
+
+% Ensure luatex or xetex engine
+\RequirePackage{iftex}[2019/10/24]
+\RequireTUTeX
+\RequirePackage{unicode-math}
+
+\newopentypefeature{Style}{leqslant}{+ss04}
+\newopentypefeature{Style}{smaller}{+ss05}
+\newopentypefeature{Style}{subsetneq}{+ss06}
+\newopentypefeature{Style}{parallelslant}{+ss07}
+\newopentypefeature{Style}{upint}{+ss08}
+\newopentypefeature{Style}{upneg}{+ss09}
+
+\newtoks\LeteMtoks
+\newcommand*{\Letestore@KV@Option}[2]{%
+ \LeteMtoks=\expandafter{\the\LeteMtoks #1={#2},}}
+
+% Package options:
+\DeclareKeys
+ {
+ tight.if = Lete@tight ,
+ loose.code = \Lete@tightfalse ,
+ fulloldstyle.code = \Letestore@KV@Option{Numbers}{OldStyle} ,
+ math-style.code = \Letestore@KV@Option{math-style}{#1} ,
+ bold-style.code = \Letestore@KV@Option{bold-style}{#1} ,
+ nabla.code = \Letestore@KV@Option{nabla}{#1} ,
+ partial.code = \Letestore@KV@Option{partial}{#1} ,
+ CharacterVariant.code = \Letestore@KV@Option{CharacterVariant}{#1} ,
+ StylisticSet.code = \Letestore@KV@Option{StylisticSet}{#1} ,
+ Style.code = \Letestore@KV@Option{Style}{#1} ,
+ Scale.code = \Letestore@KV@Option{Scale}{#1}
+ }
+%
+\ProcessKeyOptions
+%
+% Math fonts: LeteSansMath.otf, LeteSansMath-Bold.otf.
+% Following Joseph Wright in https://tex.stackexchange.com/questions/451
+\Letestore@KV@Option{BoldFont}{LeteSansMath-Bold.otf}
+\begingroup
+ \edef\temp{%
+ \endgroup
+ \noexpand\setmathfont{LeteSansMath.otf}%
+ [\unexpanded\expandafter{\the\LeteMtoks}]%
+ }
+ \temp
+%
+\ifLete@tight
+ \thinmuskip=2mu
+ \medmuskip=2.5mu plus 1mu minus 2.5mu
+ \thickmuskip=3.5mu plus 2.5mu
+\fi
+
+\AtBeginDocument{%
+ % LeteSansMath specific
+ % \Umathchardef\<cmd> = <math type> <family> <slot>
+ % <math type> : \mathord=0 \mathrel=3 ; <family>=0
+ \Umathchardef\mbfimath = 0 0 "E041 \relax
+ \Umathchardef\mbfjmath = 0 0 "E042 \relax
+ \Umathchardef\mbfdotlessi = 0 0 "E043 \relax
+ \Umathchardef\mbfdotlessj = 0 0 "E044 \relax
+ \Umathchardef\mithbar = 0 0 "E048 \relax
+ \Umathchardef\mupvarg = 0 0 "E04B \relax
+ \Umathchardef\mbfvarg = 0 0 "E04C \relax
+ \Umathchardef\mitvarg = 0 0 "E04D \relax
+ \Umathchardef\mbfitvarg = 0 0 "E04E \relax
+ \Umathchardef\varemptyset = 0 0 "E04F \relax
+ \Umathchardef\BbbDelta = 0 0 "E050 \relax
+ \Umathchardef\BbbTheta = 0 0 "E051 \relax
+ \Umathchardef\BbbLambda = 0 0 "E052 \relax
+ \Umathchardef\BbbXi = 0 0 "E053 \relax
+ \Umathchardef\BbbSigma = 0 0 "E054 \relax
+ \Umathchardef\BbbPhi = 0 0 "E055 \relax
+ \Umathchardef\BbbPsi = 0 0 "E056 \relax
+ \Umathchardef\BbbOmega = 0 0 "E057 \relax
+ \Umathchardef\lesseqslantgtr = 3 0 "E060 \relax
+ \Umathchardef\gtreqslantless = 3 0 "E061 \relax
+ \Umathchardef\lesseqqslantgtr = 3 0 "E062 \relax
+ \Umathchardef\gtreqqslantless = 3 0 "E063 \relax
+ \Umathchardef\nleqqslant = 3 0 "E066 \relax
+ \Umathchardef\ngeqqslant = 3 0 "E067 \relax
+ \Umathchardef\parallelslant = 3 0 "E080 \relax
+ \Umathchardef\nparallelslant = 3 0 "E081 \relax
+ \Umathchardef\shortparallelslant = 3 0 "E082 \relax
+ \Umathchardef\nshortparallelslant = 3 0 "E083 \relax
+ \Umathchardef\mapstochar = 3 0 "E08D \relax
+ \Umathchardef\lhook = 3 0 "E08E \relax
+ \Umathchardef\rhook = 3 0 "E08F \relax
+ % amssymb
+ \@ifpackageloaded{amssymb}%
+ {\PackageWarning{lete-sans-math}{%
+ LeteSansMath provides all AMS symbols.\MessageBreak
+ Loading amssymb.sty is not advisable.\MessageBreak
+ Reported}%
+ }%
+ {% AMS Symbols not referenced in unicode-math-table.tex
+ % \Umathchardef\<cmd> = <math type> <family> <slot>
+ % <math type> : \mathord=0 \mathrel=3 ; <family>=0
+ \Umathchardef\circledR = 0 0 "24C7 \relax
+ \Umathchardef\circledS = 0 0 "24C8 \relax
+ \Umathchardef\diagup = 0 0 "27CB \relax
+ \Umathchardef\diagdown = 0 0 "27CD \relax
+ \Umathchardef\lvertneqq = 3 0 "E002 \relax
+ \Umathchardef\gvertneqq = 3 0 "E003 \relax
+ \Umathchardef\varsubsetneq = 3 0 "E006 \relax
+ \Umathchardef\varsupsetneq = 3 0 "E007 \relax
+ \Umathchardef\varsubsetneqq = 3 0 "E015 \relax
+ \Umathchardef\varsupsetneqq = 3 0 "E016 \relax
+ \Umathchardef\shortmid = 3 0 "E070 \relax
+ \Umathchardef\shortparallel = 3 0 "E071 \relax
+ \Umathchardef\nshortmid = 3 0 "E072 \relax
+ \Umathchardef\nshortparallel = 3 0 "E073 \relax
+ \Umathchardef\nleqslant = 3 0 "E076 \relax
+ \Umathchardef\ngeqslant = 3 0 "E077 \relax
+ \Umathchardef\nleqq = 3 0 "E078 \relax
+ \Umathchardef\ngeqq = 3 0 "E079 \relax
+ \Umathchardef\npreceq = 3 0 "E07C \relax
+ \Umathchardef\nsucceq = 3 0 "E07D \relax
+ \Umathchardef\nsubseteqq = 3 0 "E07E \relax
+ \Umathchardef\nsupseteqq = 3 0 "E07F \relax
+ \let\centerdot\cdotp
+ \let\restriction\upharpoonright
+ \let\doteqdot\Doteq
+ \let\doublecup\Cup
+ \let\doublecap\Cap
+ \let\llless\lll
+ \let\gggtr\ggg
+ \let\circlearrowleft\acwopencirclearrow
+ \let\circlearrowright\cwopencirclearrow
+ \let\lozenge\mdlgwhtlozenge
+ \let\blacklozenge\mdlgblklozenge
+ \let\square\mdlgwhtsquare
+ \let\blacksquare\mdlgblksquare
+ \let\dashleftarrow\leftdasharrow
+ \let\dashrightarrow\rightdasharrow
+ \let\ntriangleleft\nvartriangleleft
+ \let\ntriangleright\nvartriangleright
+ \let\varpropto\propto
+ \let\thicksim\sim
+ \let\thickapprox\approx
+ \let\smallsmile\smile
+ \let\smallfrown\frown
+ }%
+ % latexsym
+ \@ifpackageloaded{latexsym}%
+ {\PackageWarning{lete-sans-math}{%
+ LeteSansMath provides all LaTeX symbols.\MessageBreak
+ Loading latexsym.sty is not advisable.\MessageBreak
+ Reported}%
+ }%
+ {\let\lhd\vartriangleleft
+ \let\rhd\vartriangleright
+ \let\unlhd\trianglelefteq
+ \let\unrhd\trianglerighteq
+ \let\leadsto\rightcurvedarrow
+ \let\Box\lgwhtsquare
+ \let\Diamond\mdlgwhtdiamond
+ }%
+}
+
+\endinput