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unicode-math.dtx
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% \iffalse
% !TEX TS-program = XeLaTeX
% ^^A %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% ^^A SELF-EXTRACTION BEGINS HERE
% ^^A %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%<*internal>
\begingroup
\input l3docstrip.tex
\keepsilent
\let\MetaPrefix\DoubleperCent
\declarepreamble\texpreamble
Copyright 2006-2017 Will Robertson <[email protected]>
Copyright 2010-2013 Philipp Stephani <[email protected]>
Copyright 2012-2015 Khaled Hosny <[email protected]>
This package is free software and may be redistributed and/or modified under
the conditions of the LaTeX Project Public License, version 1.3c or higher
(your choice): <http://www.latex-project.org/lppl/>.
This work is "maintained" by Will Robertson.
\endpreamble
\nopostamble
\askforoverwritefalse
\let\MetaPrefix\DoubleperCent
\usepreamble\texpreamble
\ifx\UMDEBUG\undefined
\def\UMDEBUG{}%
\else
\def\UMDEBUG{,debug}%
\fi
\generate{\file{unicode-math.sty}{
\from{unicode-math.dtx}{preamble\UMDEBUG}
\from{unicode-math-msg.dtx}{msg\UMDEBUG}
\from{unicode-math-usv.dtx}{usv\UMDEBUG}
\from{unicode-math.dtx}{load\UMDEBUG}
\from{unicode-math-alphabets.dtx}{alphabets\UMDEBUG}
}}
\generate{\file{unicode-math-xetex.sty}{
\from{unicode-math.dtx}{package,XE\UMDEBUG}
\from{unicode-math-compat.dtx}{compat,XE\UMDEBUG}
}}
\generate{\file{unicode-math-luatex.sty}{
\from{unicode-math.dtx}{package,LU\UMDEBUG}
\from{unicode-math-compat.dtx}{compat,LU\UMDEBUG}
}}
\def\tempa{plain}
\ifx\tempa\fmtname\endgroup\expandafter\bye\fi
\generate{\file{dtx-style.sty}{\from{\jobname.dtx}{dtx-style}}}
\endgroup
\ProvidesFile{unicode-math.dtx}
%</internal>
%<preamble&!XE&!LU>\ProvidesPackage{unicode-math}
%<preamble&XE>\ProvidesPackage{unicode-math-xetex}
%<preamble&LU>\ProvidesPackage{unicode-math-luatex}
%<*preamble>
[2017/08/02 v0.8f Unicode maths in XeLaTeX and LuaLaTeX]
%</preamble>
%<*internal>
\def\DOCUMENTEND{F}
\input{unicode-math-doc}
\DocInput{unicode-math.dtx}
\DocInput{unicode-math-msg.dtx}
\DocInput{unicode-math-usv.dtx}
\DocInput{unicode-math-alphabets.dtx}
\DocInput{unicode-math-compat.dtx}
\end{document}
%</internal>
% \fi
%
% \clearpage
% \part{Package implementation}
% \parttoc
%
% The prefix for \pkg{unicode-math} is \texttt{um}:
% \begin{macrocode}
%<@@=um>
% \end{macrocode}
%
% \section{Header code}
%
% We (later on) bifurcate the package based on the engine being used.
% These separate package files are indicated with the Docstrip flags \textsf{LU} and \textsf{XE}, respectively.
% Shared code executed before loading the engine-specific code is indicated with the flag \textsf{preamble}.
% \begin{macrocode}
%<*load>
\sys_if_engine_luatex:T { \RequirePackage{unicode-math-luatex} }
\sys_if_engine_xetex:T { \RequirePackage{unicode-math-xetex} }
%</load>
% \end{macrocode}
% The shared part of the code starts here before the split above.
% \begin{macrocode}
%<*preamble&!XE&!LU>
% \end{macrocode}
%
% Bail early if using pdf\TeX.
% \begin{macrocode}
\usepackage{ifxetex,ifluatex}
\ifxetex
\ifdim\number\XeTeXversion\XeTeXrevision in<0.9998in%
\PackageError{unicode-math}{%
Cannot run with this version of XeTeX!\MessageBreak
You need XeTeX 0.9998 or newer.%
}\@ehd
\fi
\else\ifluatex
\ifnum\luatexversion<64%
\PackageError{unicode-math}{%
Cannot run with this version of LuaTeX!\MessageBreak
You need LuaTeX 0.64 or newer.%
}\@ehd
\fi
\else
\PackageError{unicode-math}{%
Cannot be run with pdfLaTeX!\MessageBreak
Use XeLaTeX or LuaLaTeX instead.%
}\@ehd
\fi\fi
% \end{macrocode}
%
% \paragraph{Packages}
% \begin{macrocode}
\RequirePackage{expl3}[2015/03/01]
\RequirePackage{ucharcat}
\RequirePackage{xparse}
\RequirePackage{l3keys2e}
\RequirePackage{fontspec}[2015/03/14]
\RequirePackage{fix-cm} % avoid some warnings
\RequirePackage{filehook}
% \end{macrocode}
%
% \begin{macrocode}
\ExplSyntaxOn
% \end{macrocode}
%
% Variants needed from \pkg{expl3}:
% \begin{macrocode}
\cs_set_protected_nopar:Npn \exp_last_unbraced:NNx { \::N \::x_unbraced \::: }
% \end{macrocode}
%
% For \pkg{fontspec}:
% \begin{macrocode}
\cs_generate_variant:Nn \fontspec_set_family:Nnn {Nx}
\cs_generate_variant:Nn \fontspec_set_fontface:NNnn {NNx}
% \end{macrocode}
%
% \paragraph{Conditionals}
%
% \begin{macrocode}
\bool_new:N \l_@@_ot_math_bool
\bool_new:N \l_@@_init_bool
\bool_new:N \l_@@_implicit_alph_bool
\bool_new:N \g_@@_mainfont_already_set_bool
% \end{macrocode}
% For \opt{math-style}:
% \begin{macrocode}
\bool_new:N \g_@@_literal_bool
\bool_new:N \g_@@_upLatin_bool
\bool_new:N \g_@@_uplatin_bool
\bool_new:N \g_@@_upGreek_bool
\bool_new:N \g_@@_upgreek_bool
% \end{macrocode}
% For \opt{bold-style}:
% \begin{macrocode}
\bool_new:N \g_@@_bfliteral_bool
\bool_new:N \g_@@_bfupLatin_bool
\bool_new:N \g_@@_bfuplatin_bool
\bool_new:N \g_@@_bfupGreek_bool
\bool_new:N \g_@@_bfupgreek_bool
% \end{macrocode}
% For \opt{sans-style}:
% \begin{macrocode}
\bool_new:N \g_@@_upsans_bool
\bool_new:N \g_@@_sfliteral_bool
% \end{macrocode}
% For assorted package options:
% \begin{macrocode}
\bool_new:N \g_@@_upNabla_bool
\bool_new:N \g_@@_uppartial_bool
\bool_new:N \g_@@_literal_Nabla_bool
\bool_new:N \g_@@_literal_partial_bool
\bool_new:N \l_@@_smallfrac_bool
\bool_new:N \g_@@_literal_colon_bool
\bool_new:N \g_@@_mathrm_text_bool
\bool_new:N \g_@@_mathit_text_bool
\bool_new:N \g_@@_mathbf_text_bool
\bool_new:N \g_@@_mathsf_text_bool
\bool_new:N \g_@@_mathtt_text_bool
% \end{macrocode}
%
% \paragraph{Variables}
% \begin{macrocode}
\int_new:N \g_@@_fam_int
% \end{macrocode}
%
% For displaying in warning messages, etc.:
% \begin{macrocode}
\tl_const:Nn \c_@@_math_alphabet_name_latin_tl {Latin,~lowercase}
\tl_const:Nn \c_@@_math_alphabet_name_Latin_tl {Latin,~uppercase}
\tl_const:Nn \c_@@_math_alphabet_name_greek_tl {Greek,~lowercase}
\tl_const:Nn \c_@@_math_alphabet_name_Greek_tl {Greek,~uppercase}
\tl_const:Nn \c_@@_math_alphabet_name_num_tl {Numerals}
\tl_const:Nn \c_@@_math_alphabet_name_misc_tl {Misc.}
% \end{macrocode}
%
% \begin{macrocode}
\tl_new:N \l_@@_mathstyle_tl
% \end{macrocode}
%
% Used to store the font switch for the \cs{operator@font}.
% \begin{macrocode}
\tl_new:N \g_@@_operator_mathfont_tl
% \end{macrocode}
%
% Variables:
% \begin{macrocode}
\seq_new:N \l_@@_missing_alph_seq
\seq_new:N \l_@@_mathalph_seq
\seq_new:N \l_@@_char_range_seq
\seq_new:N \l_@@_mclass_range_seq
\seq_new:N \l_@@_cmd_range_seq
% \end{macrocode}
%
% \begin{macro}{\g_@@_mathclasses_seq}
% Every math class.
% \begin{macrocode}
\seq_new:N \g_@@_mathclasses_seq
\seq_set_from_clist:Nn \g_@@_mathclasses_seq
{
\mathord,\mathalpha,\mathbin,\mathrel,\mathpunct,
\mathop,
\mathopen,\mathclose,
\mathfence,\mathover,\mathunder,
\mathaccent,\mathbotaccent,\mathaccentwide,\mathbotaccentwide
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\g_@@_default_mathalph_seq}
% This sequence stores the alphabets in each math style.
% \begin{macrocode}
\seq_new:N \g_@@_default_mathalph_seq
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\g_@@_mathstyles_seq}
% This is every `named range' and every `math style' known to \pkg{unicode-math}.
% A named range is such as "bfit" and "sfit", which are also math styles (with \cs{symbfit} and \cs{symsfit}).
% `Mathstyles' are a superset of named ranges and also include commands such as \cs{symbf} and \cs{symsf}.
%
% N.B. for parsing purposes `named ranges' are defined as strings!
% \begin{macrocode}
\seq_new:N \g_@@_named_ranges_seq
\seq_new:N \g_@@_mathstyles_seq
% \end{macrocode}
% \end{macro}
%
% \begin{macrocode}
\muskip_new:N \g_@@_primekern_muskip
\muskip_gset:Nn \g_@@_primekern_muskip { -\thinmuskip/2 }% arbitrary
\int_new:N \l_@@_primecount_int
\prop_new:N \g_@@_supers_prop
\prop_new:N \g_@@_subs_prop
\tl_new:N \l_not_token_name_tl
% \end{macrocode}
%
% \subsection{Extras}
%
% What might end up being provided by the kernel.
%
% \begin{macro}{\@@_glyph_if_exist:nTF}
%: TODO: Generalise for arbitrary fonts! \cs{l_@@_font} is not always the one used for a specific glyph!!
% \begin{macrocode}
\prg_new_conditional:Nnn \@@_glyph_if_exist:n {p,TF,T,F}
{
\etex_iffontchar:D \l_@@_font #1 \scan_stop:
\prg_return_true:
\else:
\prg_return_false:
\fi:
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_set_mathcode:nnnn}
% \begin{macro}{\@@_set_mathcode:nnn}
% \begin{macro}{\@@_set_mathchar:NNnn}
% \begin{macro}{\@@_set_mathchar:cNnn}
% \begin{macro}{\@@_set_delcode:nnn}
% \begin{macro}{\@@_radical:nn}
% \begin{macro}{\@@_delimiter:Nnn}
% \begin{macro}{\@@_accent:nnn}
% \begin{macro}{\@@_accent_keyword:}
% These are all wrappers for the primitive commands that take numerical
% input only.
% \begin{macrocode}
\cs_set:Npn \@@_set_mathcode:nnnn #1#2#3#4 {
\Umathcode \int_eval:n {#1} =
\mathchar@type#2 \csname sym#3\endcsname \int_eval:n {#4} \scan_stop:
}
\cs_set:Npn \@@_set_mathcode:nnn #1#2#3 {
\Umathcode \int_eval:n {#1} =
\mathchar@type#2 \csname sym#3\endcsname \int_eval:n {#1} \scan_stop:
}
\cs_set:Npn \@@_set_mathchar:NNnn #1#2#3#4 {
\Umathchardef #1 =
\mathchar@type#2 \csname sym#3\endcsname \int_eval:n {#4} \scan_stop:
}
\cs_new:Nn \@@_set_delcode:nnn {
\Udelcode#2 = \csname sym#1\endcsname #3 \scan_stop:
}
\cs_new:Nn \@@_radical:nn {
\Uradical \csname sym#1\endcsname #2 \scan_stop:
}
\cs_new:Nn \@@_delimiter:Nnn {
\Udelimiter \mathchar@type#1 \csname sym#2\endcsname #3 \scan_stop:
}
\cs_new:Nn \@@_accent:nnn {
\Umathaccent #1~ \mathchar@type\mathaccent \use:c { sym #2 } #3 \scan_stop:
}
% \end{macrocode}
%
% \begin{macrocode}
\cs_generate_variant:Nn \@@_set_mathchar:NNnn {c}
% \end{macrocode}
% \end{macro}
% \end{macro}
% \end{macro}
% \end{macro}
% \end{macro}
% \end{macro}
% \end{macro}
% \end{macro}
% \end{macro}
%
%
% \begin{macro}{\@@_char_gmake_mathactive:N}
% \begin{macro}{\@@_char_gmake_mathactive:n}
% \begin{macrocode}
\cs_new:Nn \@@_char_gmake_mathactive:N
{
\global\mathcode `#1 = "8000 \scan_stop:
}
\cs_new:Nn \@@_char_gmake_mathactive:n
{
\global\mathcode #1 = "8000 \scan_stop:
}
% \end{macrocode}
% \end{macro}
% \end{macro}
%
% \subsection{Alphabet Unicode positions}
%
% Before we begin, let's define the positions of the various Unicode
% alphabets so that our code is a little more readable.\footnote{`\textsc{u.s.v.}' stands
% for `Unicode scalar value'.}
%
% Rather than `readable', in the end, this makes the code more extensible.
% \begin{macrocode}
\cs_new:Nn \usv_set:nnn
{ \tl_set:cn { g_@@_#1_#2_usv } {#3} }
\cs_new:Nn \@@_to_usv:nn
{ \use:c { g_@@_#1_#2_usv } }
\prg_new_conditional:Nnn \@@_usv_if_exist:nn {T,F,TF}
{
\cs_if_exist:cTF { g_@@_#1_#2_usv }
\prg_return_true: \prg_return_false:
}
% \end{macrocode}
%
% \subsection{Package options}
%
% \begin{macro}{\unimathsetup}
% This macro can be used in lieu of or later to override
% options declared when the package is loaded.
% \begin{macrocode}
\DeclareDocumentCommand \unimathsetup {m}
{ \keys_set:nn {unicode-math} {#1} }
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_keys_choices:nn}
% To simplify the creation of option keys, let's iterate in pairs rather than worry about equals signs and commas.
% \begin{macrocode}
\cs_new:Nn \@@_keys_choices:nn
{
\cs_set:Npn \@@_keys_choices_fn:nn { \@@_keys_choices_aux:nnn {#1} }
\use:x
{
\exp_not:N \keys_define:nn {unicode-math}
{
#1 .choice: ,
\@@_tl_map_dbl:nN {#2} \@@_keys_choices_fn:nn
}
}
}
\cs_new:Nn \@@_keys_choices_aux:nnn { #1 / #2 .code:n = { \exp_not:n {#3} } , }
\cs_new:Nn \@@_tl_map_dbl:nN
{
\__@@_tl_map_dbl:Nnn #2 #1 \q_recursion_tail {}{} \q_recursion_stop
}
\cs_new:Nn \__@@_tl_map_dbl:Nnn
{
\quark_if_recursion_tail_stop:n {#2}
\quark_if_recursion_tail_stop:n {#3}
#1 {#2} {#3}
\__@@_tl_map_dbl:Nnn #1
}
% \end{macrocode}
% \end{macro}
%
% \paragraph{Compatibility}
% \begin{macrocode}
\@@_keys_choices:nn {mathup}
{
{sym} { \bool_set_false:N \g_@@_mathrm_text_bool }
{text} { \bool_set_true:N \g_@@_mathrm_text_bool }
}
\@@_keys_choices:nn {mathrm}
{
{sym} { \bool_set_false:N \g_@@_mathrm_text_bool }
{text} { \bool_set_true:N \g_@@_mathrm_text_bool }
}
\@@_keys_choices:nn {mathit}
{
{sym} { \bool_set_false:N \g_@@_mathit_text_bool }
{text} { \bool_set_true:N \g_@@_mathit_text_bool }
}
\@@_keys_choices:nn {mathbf}
{
{sym} { \bool_set_false:N \g_@@_mathbf_text_bool }
{text} { \bool_set_true:N \g_@@_mathbf_text_bool }
}
\@@_keys_choices:nn {mathsf}
{
{sym} { \bool_set_false:N \g_@@_mathsf_text_bool }
{text} { \bool_set_true:N \g_@@_mathsf_text_bool }
}
\@@_keys_choices:nn {mathtt}
{
{sym} { \bool_set_false:N \g_@@_mathtt_text_bool }
{text} { \bool_set_true:N \g_@@_mathtt_text_bool }
}
% \end{macrocode}
%
% \paragraph{math-style}
% \begin{macrocode}
\@@_keys_choices:nn {normal-style}
{
{ISO} {
\bool_set_false:N \g_@@_literal_bool
\bool_set_false:N \g_@@_upGreek_bool
\bool_set_false:N \g_@@_upgreek_bool
\bool_set_false:N \g_@@_upLatin_bool
\bool_set_false:N \g_@@_uplatin_bool
}
{TeX} {
\bool_set_false:N \g_@@_literal_bool
\bool_set_true:N \g_@@_upGreek_bool
\bool_set_false:N \g_@@_upgreek_bool
\bool_set_false:N \g_@@_upLatin_bool
\bool_set_false:N \g_@@_uplatin_bool
}
{french} {
\bool_set_false:N \g_@@_literal_bool
\bool_set_true:N \g_@@_upGreek_bool
\bool_set_true:N \g_@@_upgreek_bool
\bool_set_true:N \g_@@_upLatin_bool
\bool_set_false:N \g_@@_uplatin_bool
}
{upright} {
\bool_set_false:N \g_@@_literal_bool
\bool_set_true:N \g_@@_upGreek_bool
\bool_set_true:N \g_@@_upgreek_bool
\bool_set_true:N \g_@@_upLatin_bool
\bool_set_true:N \g_@@_uplatin_bool
}
{literal} {
\bool_set_true:N \g_@@_literal_bool
}
}
% \end{macrocode}
%
% \begin{macrocode}
\@@_keys_choices:nn {math-style}
{
{ISO} {
\unimathsetup { nabla=upright, partial=italic,
normal-style=ISO, bold-style=ISO, sans-style=italic }
}
{TeX} {
\unimathsetup { nabla=upright, partial=italic,
normal-style=TeX, bold-style=TeX, sans-style=upright }
}
{french} {
\unimathsetup { nabla=upright, partial=upright,
normal-style=french, bold-style=upright, sans-style=upright }
}
{upright} {
\unimathsetup { nabla=upright, partial=upright,
normal-style=upright, bold-style=upright, sans-style=upright }
}
{literal} {
\unimathsetup { colon=literal, nabla=literal, partial=literal,
normal-style=literal, bold-style=literal, sans-style=literal }
}
}
% \end{macrocode}
%
% \paragraph{bold-style}
% \begin{macrocode}
\@@_keys_choices:nn {bold-style}
{
{ISO} {
\bool_set_false:N \g_@@_bfliteral_bool
\bool_set_false:N \g_@@_bfupGreek_bool
\bool_set_false:N \g_@@_bfupgreek_bool
\bool_set_false:N \g_@@_bfupLatin_bool
\bool_set_false:N \g_@@_bfuplatin_bool
}
{TeX} {
\bool_set_false:N \g_@@_bfliteral_bool
\bool_set_true:N \g_@@_bfupGreek_bool
\bool_set_false:N \g_@@_bfupgreek_bool
\bool_set_true:N \g_@@_bfupLatin_bool
\bool_set_true:N \g_@@_bfuplatin_bool
}
{upright} {
\bool_set_false:N \g_@@_bfliteral_bool
\bool_set_true:N \g_@@_bfupGreek_bool
\bool_set_true:N \g_@@_bfupgreek_bool
\bool_set_true:N \g_@@_bfupLatin_bool
\bool_set_true:N \g_@@_bfuplatin_bool
}
{literal} {
\bool_set_true:N \g_@@_bfliteral_bool
}
}
% \end{macrocode}
%
% \paragraph{sans-style}
% \begin{macrocode}
\@@_keys_choices:nn {sans-style}
{
{italic} { \bool_set_false:N \g_@@_upsans_bool }
{upright} { \bool_set_true:N \g_@@_upsans_bool }
{literal} { \bool_set_true:N \g_@@_sfliteral_bool }
}
% \end{macrocode}
%
%
% \paragraph{Nabla and partial}
% \begin{macrocode}
\@@_keys_choices:nn {nabla}
{
{upright} {
\bool_set_false:N \g_@@_literal_Nabla_bool
\bool_set_true:N \g_@@_upNabla_bool
}
{italic} {
\bool_set_false:N \g_@@_literal_Nabla_bool
\bool_set_false:N \g_@@_upNabla_bool
}
{literal} { \bool_set_true:N \g_@@_literal_Nabla_bool }
}
% \end{macrocode}
%
% \begin{macrocode}
\@@_keys_choices:nn {partial}
{
{upright} {
\bool_set_false:N \g_@@_literal_partial_bool
\bool_set_true:N \g_@@_uppartial_bool
}
{italic} {
\bool_set_false:N \g_@@_literal_partial_bool
\bool_set_false:N \g_@@_uppartial_bool
}
{literal} { \bool_set_true:N \g_@@_literal_partial_bool }
}
% \end{macrocode}
%
% \paragraph{Colon style}
% \begin{macrocode}
\@@_keys_choices:nn {colon}
{
{literal} { \bool_set_true:N \g_@@_literal_colon_bool }
{TeX} { \bool_set_false:N \g_@@_literal_colon_bool }
}
% \end{macrocode}
%
% \paragraph{Slash delimiter style}
% \begin{macrocode}
\@@_keys_choices:nn {slash-delimiter}
{
{ascii} { \tl_set:Nn \g_@@_slash_delimiter_usv {"002F} }
{frac} { \tl_set:Nn \g_@@_slash_delimiter_usv {"2044} }
{div} { \tl_set:Nn \g_@@_slash_delimiter_usv {"2215} }
}
% \end{macrocode}
%
%
% \paragraph{Active fraction style}
% \begin{macrocode}
\@@_keys_choices:nn {active-frac}
{
{small}
{
\cs_if_exist:NTF \tfrac
{ \bool_set_true:N \l_@@_smallfrac_bool }
{
\@@_warning:n {no-tfrac}
\bool_set_false:N \l_@@_smallfrac_bool
}
\use:c {@@_setup_active_frac:}
}
{normalsize}
{
\bool_set_false:N \l_@@_smallfrac_bool
\use:c {@@_setup_active_frac:}
}
}
% \end{macrocode}
%
% \paragraph{Debug/tracing}
%
%
% \begin{macrocode}
\keys_define:nn {unicode-math}
{
warnings-off .code:n =
{
\clist_map_inline:nn {#1}
{ \msg_redirect_name:nnn { unicode-math } { ##1 } { none } }
}
}
% \end{macrocode}
%
% \begin{macrocode}
\@@_keys_choices:nn {trace}
{
{on} {} % default
{debug} { \msg_redirect_module:nnn { unicode-math } { log } { warning } }
{off} { \msg_redirect_module:nnn { unicode-math } { log } { none } }
}
% \end{macrocode}
%
% \begin{macrocode}
\unimathsetup {math-style=TeX}
\unimathsetup {slash-delimiter=ascii}
\unimathsetup {trace=off}
\unimathsetup {mathrm=text,mathit=text,mathbf=text,mathsf=text,mathtt=text}
\cs_if_exist:NT \tfrac { \unimathsetup {active-frac=small} }
\ProcessKeysOptions {unicode-math}
% \end{macrocode}
%
% \subsection{Programmers' interface}
%
% \begin{macro}{\unimath_get_mathstyle:}
% This command expands to the currently math style.
% \begin{macrocode}
\cs_new:Nn \unimath_get_mathstyle:
{
\tl_use:N \l_@@_mathstyle_tl
}
% \end{macrocode}
% \end{macro}
%
% End of preamble code.
% \begin{macrocode}
%</preamble&!XE&!LU>
% \end{macrocode}
%
% (Error messages and warning definitions go here from the |msg| chunk
% defined in \secref[vref]{codemsg}.)
%
% \section{Bifurcation}
%
% And here the split begins. Most of the code is still shared, but
% code for \LuaTeX\ uses the `\textsf{LU}' flag and code for \XeTeX\ uses `\textsf{XE}'.
%
% \begin{macrocode}
%<*package&(XE|LU)>
\ExplSyntaxOn
% \end{macrocode}
%
% \subsection{Engine differences}
%
% \XeTeX\ before version 0.9999 did not support |\U| prefix for extended math
% primitives, and while \LuaTeX\ had it from the start, prior 0.75.0 the
% \LaTeX\ format did not provide them without the |\luatex| prefix.
% We assume that users of \pkg{unicode-math} are using up-to-date engines however.
%
% \begin{macrocode}
%<*LU>
\RequirePackage{luaotfload} [2014/05/18]
\RequirePackage{lualatex-math}[2011/08/07]
%</LU>
% \end{macrocode}
%
%
% \subsection{Overcoming \texorpdfstring{\cmd\@onlypreamble}{\textbackslash @onlypreamble}}
%
% The requirement of only setting up the maths fonts in the preamble is now removed. The following list might be overly ambitious.
% \begin{macrocode}
\tl_map_inline:nn
{
\new@mathgroup\cdp@list\cdp@elt\DeclareMathSizes
\@DeclareMathSizes\newmathalphabet\newmathalphabet@@\newmathalphabet@@@
\DeclareMathVersion\define@mathalphabet\define@mathgroup\addtoversion
\version@list\version@elt\alpha@list\alpha@elt
\restore@mathversion\init@restore@version\dorestore@version\process@table
\new@mathversion\DeclareSymbolFont\group@list\group@elt
\new@symbolfont\SetSymbolFont\SetSymbolFont@\get@cdp
\DeclareMathAlphabet\new@mathalphabet\SetMathAlphabet\SetMathAlphabet@
\DeclareMathAccent\set@mathaccent\DeclareMathSymbol\set@mathchar
\set@mathsymbol\DeclareMathDelimiter\@xxDeclareMathDelimiter
\@DeclareMathDelimiter\@xDeclareMathDelimiter\set@mathdelimiter
\set@@mathdelimiter\DeclareMathRadical\mathchar@type
\DeclareSymbolFontAlphabet\DeclareSymbolFontAlphabet@
}
{
\tl_remove_once:Nn \@preamblecmds {\do#1}
}
% \end{macrocode}
%
% \section{Fundamentals}
%
% \subsection{Setting math chars, math codes, etc.}
%
% \begin{macro}{\@@_set_mathsymbol:nNNn}
% \darg{A \LaTeX\ symbol font, e.g., \texttt{operators}}
% \darg{Symbol macro, \eg, \cmd\alpha}
% \darg{Type, \eg, \cmd\mathalpha}
% \darg{Slot, \eg, \texttt{"221E}}
% There are a bunch of tests to perform to process the various characters.
% The following assignments should all be fairly straightforward.
%
% The catcode setting is to work around (strange?) behaviour in LuaTeX in which catcode 11 characters don't have italic correction for maths.
% We don't adjust ascii chars, however, because certain punctuation should not have their catcodes changed.
% \begin{macrocode}
\cs_set:Nn \@@_set_mathsymbol:nNNn
{
\bool_lazy_and:nnT
{
\int_compare_p:nNn {#4} > {127}
}
{
\int_compare_p:nNn { \char_value_catcode:n {#4} } = {11}
}
{ \char_set_catcode_other:n {#4} }
\tl_case:Nn #3
{
\mathord { \@@_set_mathcode:nnn {#4} {#3} {#1} }
\mathalpha { \@@_set_mathcode:nnn {#4} {#3} {#1} }
\mathbin { \@@_set_mathcode:nnn {#4} {#3} {#1} }
\mathrel { \@@_set_mathcode:nnn {#4} {#3} {#1} }
\mathpunct { \@@_set_mathcode:nnn {#4} {#3} {#1} }
\mathop { \@@_set_big_operator:nnn {#1} {#2} {#4} }
\mathopen { \@@_set_math_open:nnn {#1} {#2} {#4} }
\mathclose { \@@_set_math_close:nnn {#1} {#2} {#4} }
\mathfence { \@@_set_math_fence:nnnn {#1} {#2} {#3} {#4} }
\mathaccent
{ \@@_set_math_accent:Nnnn #2 {fixed} {#1} {#4} }
\mathbotaccent
{ \@@_set_math_accent:Nnnn #2 {bottom~ fixed} {#1} {#4} }
\mathaccentwide
{ \@@_set_math_accent:Nnnn #2 {} {#1} {#4} }
\mathbotaccentwide
{ \@@_set_math_accent:Nnnn #2 {bottom} {#1} {#4} }
\mathover
{ \@@_set_math_overunder:Nnnn #2 {} {#1} {#4} }
\mathunder
{ \@@_set_math_overunder:Nnnn #2 {bottom} {#1} {#4} }
}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macrocode}
\edef\mathfence{\string\mathfence}
\edef\mathover{\string\mathover}
\edef\mathunder{\string\mathunder}
\edef\mathbotaccent{\string\mathbotaccent}
\edef\mathaccentwide{\string\mathaccentwide}
\edef\mathbotaccentwide{\string\mathbotaccentwide}
% \end{macrocode}
%
%
% \begin{macro}{\@@_set_big_operator:nnn}
% \darg{Symbol font name}
% \darg{Macro to assign}
% \darg{Glyph slot}
% In the examples following, say we're defining for the symbol \cmd\sum\ ($\sum$).
% In order for literal Unicode characters to be used in the source and still
% have the correct limits behaviour, big operators are made math-active.
% This involves three steps:
% \begin{itemize}
% \item
% The active math char is defined to expand to the macro \cs{sum_sym}.
% (Later, the control sequence \cs{sum} will be assigned the math char.)
% \item
% Declare the plain old mathchardef for the control sequence \cmd\sumop.
% (This follows the convention of \LaTeX/\pkg{amsmath}.)
% \item
% Define \cs{sum_sym} as \cmd\sumop, followed by \cmd\nolimits\ if necessary.
% \end{itemize}
% Whether the \cmd\nolimits\ suffix is inserted is controlled by the
% token list \cs{l_@@_nolimits_tl}, which contains a list of such characters.
% This list is checked dynamically to allow it to be updated mid-document.
%
% Examples of expansion, by default, for two big operators:
% \begin{quote}
% (~\cs{sum} $\to$~) $\sum$ $\to$ \cs{sum_sym} $\to$ \cs{sumop}\cs{nolimits}\par
% (~\cs{int} $\to$~) $\int$ $\to$ \cs{int_sym} $\to$ \cs{intop}
% \end{quote}
% \begin{macrocode}
\cs_new:Nn \@@_set_big_operator:nnn
{
\@@_char_gmake_mathactive:n {#3}
\cs_set_protected_nopar:Npx \@@_tmpa: { \exp_not:c { \cs_to_str:N #2 _sym } }
\char_gset_active_eq:nN {#3} \@@_tmpa:
\@@_set_mathchar:cNnn {\cs_to_str:N #2 op} \mathop {#1} {#3}
\cs_gset:cpx { \cs_to_str:N #2 _sym }
{
\exp_not:c { \cs_to_str:N #2 op }
\exp_not:n { \tl_if_in:NnT \l_@@_nolimits_tl {#2} \nolimits }
}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_set_math_open:nnn}
% \darg{Symbol font name}
% \darg{Macro to assign}
% \darg{Glyph slot}
% \begin{macrocode}
\cs_new:Nn \@@_set_math_open:nnn
{
\tl_if_in:NnTF \l_@@_radicals_tl {#2}
{
\cs_gset_protected_nopar:cpx {\cs_to_str:N #2 sign}
{ \@@_radical:nn {#1} {#3} }
\tl_set:cn {l_@@_radical_\cs_to_str:N #2_tl} {\use:c{sym #1}~ #3}
}
{
\@@_set_delcode:nnn {#1} {#3} {#3}
\@@_set_mathcode:nnn {#3} \mathopen {#1}
\cs_gset_protected_nopar:Npx #2
{ \@@_delimiter:Nnn \mathopen {#1} {#3} }
}
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_set_math_close:nnn}
% \darg{Symbol font name}
% \darg{Macro to assign}
% \darg{Glyph slot}
% \begin{macrocode}
\cs_new:Nn \@@_set_math_close:nnn
{
\@@_set_delcode:nnn {#1} {#3} {#3}
\@@_set_mathcode:nnn {#3} \mathclose {#1}
\cs_gset_protected_nopar:Npx #2
{ \@@_delimiter:Nnn \mathclose {#1} {#3} }
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_set_math_fence:nnnn}
% \darg{Symbol font name}
% \darg{Macro to assign}
% \darg{Type, \eg, \cmd\mathalpha}
% \darg{Glyph slot}
% \begin{macrocode}
\cs_new:Nn \@@_set_math_fence:nnnn
{
\@@_set_mathcode:nnn {#4} {#3} {#1}
\@@_set_delcode:nnn {#1} {#4} {#4}
\cs_gset_protected_nopar:cpx {l \cs_to_str:N #2}
{ \@@_delimiter:Nnn \mathopen {#1} {#4} }
\cs_gset_protected_nopar:cpx {r \cs_to_str:N #2}
{ \@@_delimiter:Nnn \mathclose {#1} {#4} }
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_set_math_accent:Nnnn}
% \darg{Accend command}
% \darg{Accent type (string)}
% \darg{Symbol font name}
% \darg{Glyph slot}
% \begin{macrocode}
\cs_new:Nn \@@_set_math_accent:Nnnn
{
\cs_gset_protected_nopar:Npx #1
{ \@@_accent:nnn {#2} {#3} {#4} }
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_set_math_overunder:Nnnn}
% \darg{Accend command}
% \darg{Accent type (string)}
% \darg{Symbol font name}
% \darg{Glyph slot}
% \begin{macrocode}
\cs_new:Nn \@@_set_math_overunder:Nnnn
{
\cs_gset_protected_nopar:Npx #1 ##1
{
\mathop
{ \@@_accent:nnn {#2} {#3} {#4} {##1} }
\limits
}
}
% \end{macrocode}
% \end{macro}
%
% \subsection{\cs{setmathalphabet}}
%
% \begin{macro}{\setmathalphabet}
% \begin{macrocode}
\keys_define:nn {@@_mathface}
{
version .code:n =
{ \tl_set:Nn \l_@@_mversion_tl {#1} }
}
\DeclareDocumentCommand \setmathfontface { m O{} m O{} }
{
\tl_clear:N \l_@@_mversion_tl
\keys_set_known:nnN {@@_mathface} {#2,#4} \l_@@_keyval_clist
\exp_args:Nnx \fontspec_set_family:Nxn \l_@@_tmpa_tl
{ ItalicFont={}, BoldFont={}, \exp_not:V \l_@@_keyval_clist } {#3}
\tl_if_empty:NT \l_@@_mversion_tl
{
\tl_set:Nn \l_@@_mversion_tl {normal}
\DeclareMathAlphabet #1 {\g_fontspec_encoding_tl} {\l_@@_tmpa_tl} {\mddefault} {\updefault}
}
\SetMathAlphabet #1 {\l_@@_mversion_tl} {\g_fontspec_encoding_tl} {\l_@@_tmpa_tl} {\mddefault} {\updefault}
% integrate with fontspec's \setmathrm etc:
\tl_case:Nn #1
{
\mathrm { \cs_set_eq:NN \g__fontspec_mathrm_tl \l_@@_tmpa_tl }
\mathsf { \cs_set_eq:NN \g__fontspec_mathsf_tl \l_@@_tmpa_tl }
\mathtt { \cs_set_eq:NN \g__fontspec_mathtt_tl \l_@@_tmpa_tl }
}
}
\@onlypreamble \setmathfontface
% \end{macrocode}
% Note that \LaTeX's SetMathAlphabet simply doesn't work to "reset" a maths alphabet font after \verb"\begin{document}", so unlike most of the other maths commands around we still restrict this one to the preamble.
% \end{macro}
%
% \begin{macro}{\setoperatorfont}
% TODO: add check?
% \begin{macrocode}
\DeclareDocumentCommand \setoperatorfont {m}
{ \tl_set:Nn \g_@@_operator_mathfont_tl {#1} }
\setoperatorfont{\mathrm}
% \end{macrocode}
% \end{macro}
%
% \subsection{Hooks into \pkg{fontspec}}
%
% Historically, \cs{mathrm} and so on were completely overwritten by \pkg{unicode-math}, and \pkg{fontspec}'s methods for setting these fonts in the classical manner were bypassed.
%
% While we could now re-activate the way that \pkg{fontspec} does the following, because we can now change maths fonts whenever it's better to define new commands in \pkg{unicode-math} to define the \cs{mathXYZ} fonts.
%
% \subsubsection{Text font}
% \begin{macrocode}
\cs_generate_variant:Nn \tl_if_eq:nnT {o}
\cs_set:Nn \__fontspec_setmainfont:nn
{
\fontspec_set_family:Nnn \rmdefault {#1}{#2}
\tl_if_eq:onT {\g__fontspec_mathrm_tl} {\rmdefault}
{
%<XE> \fontspec_set_family:Nnn \g__fontspec_mathrm_tl {#1} {#2}
%<LU> \fontspec_set_family:Nnn \g__fontspec_mathrm_tl {Renderer=Basic,#1} {#2}
\SetMathAlphabet\mathrm{normal}\g_fontspec_encoding_tl\g__fontspec_mathrm_tl\mddefault\updefault
\SetMathAlphabet\mathit{normal}\g_fontspec_encoding_tl\g__fontspec_mathrm_tl\mddefault\itdefault
\SetMathAlphabet\mathbf{normal}\g_fontspec_encoding_tl\g__fontspec_mathrm_tl\bfdefault\updefault
}
\normalfont
\ignorespaces
}
\cs_set:Nn \__fontspec_setsansfont:nn
{
\fontspec_set_family:Nnn \sfdefault {#1}{#2}