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-rw-r--r--Master/texmf-dist/tex/latex/mh/xfrac.sty542
1 files changed, 192 insertions, 350 deletions
diff --git a/Master/texmf-dist/tex/latex/mh/xfrac.sty b/Master/texmf-dist/tex/latex/mh/xfrac.sty
index 1a6d0ff7d60..f5d92e5b979 100644
--- a/Master/texmf-dist/tex/latex/mh/xfrac.sty
+++ b/Master/texmf-dist/tex/latex/mh/xfrac.sty
@@ -8,13 +8,15 @@
%%
%% This is a generated file.
%%
-%% Copyright (C) 2004, 2008-2010 by Morten Hoegholm <mh.ctan@gmail.com>
+%% Copyright (C) 2004, 2008, 2009 by Morten Hoegholm <mh.ctan@gmail.com>
%%
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either
-%% version 1.3c of this license or (at your option) any later
+%% version 1.3 of this license or (at your option) any later
%% version. The latest version of this license is in
%% http://www.latex-project.org/lppl.txt
+%% and version 1.3 or later is part of all distributions of
+%% LaTeX version 2005/12/01 or later.
%%
%% This work has the LPPL maintenance status "maintained".
%%
@@ -25,374 +27,214 @@
%% xfrac.sty, xfrac.pdf, xfrac.ins, xfrac.drv.
%%
\RequirePackage{expl3}[2009/08/05]
-\ProvidesExplPackage{xfrac}{2010/02/02}{0.3}{Text fractions}
-\RequirePackage { amstext , graphicx , l3keys2e , textcomp , xtemplate }
-\keys_define:nn { xfrac } {
- cm-recommended .choice:,
- cm-recommended /
- false .code:n =
- { \bool_set_true:N \l_xfrac_cm_std_bool },
- cm-recommended /
- true .code:n =
- { \bool_set_false:N \l_xfrac_cm_std_bool },
- cm-recommended .default:n = { true },
- cm-standard .bool_set:N = \l_xfrac_cm_std_bool
-}
-\ProcessKeysOptions { xfrac }
+\ProvidesExplPackage{xfrac}{2009/08/10}{0.2a}{Text fractions}
+\RequirePackage{textcomp,graphicx,amstext}
+\RequirePackage{template}[2008/08/03]
+\RequirePackage{xparse}[2008/08/03]
+\bool_new:N \g_cm_recommended_bool
+\DeclareOption{cm-recommended}
+ { \bool_gset_true:N \g_cm_recommended_bool }
+\DeclareOption{cm-standard}
+ { \bool_gset_false:N \g_cm_recommended_bool }
+\ExecuteOptions{cm-recommended}
+\ProcessOptions\relax
+\box_new:N \l_xfrac_temp_box
\box_new:N \l_xfrac_slash_box
-\box_new:N \l_xfrac_tmp_box
-\cs_new:Npn \xfrac_tmp:w { }
-\dim_new:N \l_xfrac_denominator_bot_sep_dim
-\dim_new:N \l_xfrac_numerator_bot_sep_dim
-\dim_new:N \l_xfrac_numerator_top_sep_dim
-\dim_new:N \l_xfrac_slash_left_sep_dim
-\dim_new:N \l_xfrac_slash_right_sep_dim
-\tl_new:N \l_xfrac_denominator_font_tl
-\tl_new:N \l_xfrac_hscale_tl
-\tl_new:N \l_xfrac_numerator_font_tl
-\tl_new:N \l_xfrac_phantom_tl
-\tl_new:N \l_xfrac_scale_factor_tl
-\tl_new:N \l_xfrac_slash_left_msep_tl
-\tl_new:N \l_xfrac_slash_right_msep_tl
-\tl_new:N \l_xfrac_slash_symbol_tl
-\tl_new:N \l_xfrac_slash_symbol_font_tl
-\tl_new:N \l_xfrac_vscale_tl
-\cs_new_nopar:Npn \xfrac_fontscale:
-\cs_new:Npn \xfrac_math:n #1 { }
-\cs_new_nopar:Npn \xfrac_denominator_font_change: { }
-\cs_new:Npn \xfrac_denominator_format:n #1 { }
-\cs_new_nopar:Npn \xfrac_numerator_font_change: { }
-\cs_new:Npn \xfrac_numerator_format:n #1 { }
-\cs_new_nopar:Npn \xfrac_relscale: { }
-\cs_new_nopar:Npn \xfrac_slash_symbol_font_change: { }
-\cs_new:Npn \xfrac_slash_symbol_format:n #1 { }
-\cs_new:Npn \xfrac_text_or_math:n #1 { }
-\DeclareObjectType { xfrac } { 3 }
-\DeclareTemplateInterface { xfrac } { text } { 3 } {
- denominator-bot-sep : length = \c_max_dim ,
- denominator-font : tokenlist = \f@family ,
- denominator-format : function 1 = #1 ,
- h-scale : tokenlist = 1 ,
- math-mode : choice { false , true }
- = false ,
- numerator-font : tokenlist = \f@family ,
- numerator-format : function 1 = #1 ,
- numerator-bot-sep : length = \c_max_dim ,
- numerator-top-sep : length = \c_max_dim ,
- phantom : tokenlist = 8 ,
- scale-factor : tokenlist = 0.83333 ,
- scale-relative : choice { false , true }
- = true ,
- scaling : choice { false , true }
- = true ,
- slash-left-kern : length = 0 pt ,
- slash-left-mkern : tokenlist = -2 mu ,
- slash-right-kern : length = 0 pt ,
- slash-right-mkern : tokenlist = -1 mu ,
- slash-symbol : tokenlist = \textfractionsolidus ,
- slash-symbol-font : tokenlist = \f@family ,
- slash-symbol-format : function 1 = #1 ,
- v-scale : tokenlist = 1 ,
-}
-\DeclareTemplateCode { xfrac } { text } { 3 }
- {
- denominator-bot-sep = \l_xfrac_denominator_bot_sep_dim ,
- denominator-font = \l_xfrac_denominator_font_tl ,
- denominator-format = \xfrac_denominator_format:n ,
- h-scale = \l_xfrac_hscale_tl ,
- math-mode =
- {
- false = \cs_set_eq:NN \xfrac_math:n \use:n,
- true = \cs_set_eq:NN \xfrac_math:n \ensuremath
- },
- numerator-font = \l_xfrac_numerator_font_tl ,
- numerator-format = \xfrac_numerator_format:n ,
- numerator-bot-sep = \l_xfrac_numerator_bot_sep_dim ,
- numerator-top-sep = \l_xfrac_numerator_top_sep_dim ,
- phantom = \l_xfrac_phantom_tl ,
- scale-factor = \l_xfrac_scale_factor_tl ,
- scale-relative =
- {
- false =
- \cs_set_nopar:Npn \xfrac_relscale:
- {
- \dim_eval:n
- {
- \box_ht:N \l_xfrac_tmp_box
- + \box_dp:N \l_xfrac_tmp_box
- }
- },
- true =
- \cs_set_nopar:Npn \xfrac_relscale:
- { \box_ht:N \l_xfrac_slash_box }
- },
- scaling =
- {
- false = \cs_set_eq:NN \xfrac_fontscale: \prg_do_nothing:,
- true =
- \cs_set_nopar:Npn \xfrac_fontscale:
- {
- \fontsize { \l_xfrac_scale_factor_tl \xfrac_relscale: }
- { \c_zero_dim }
- \selectfont
- }
- },
- slash-left-kern = \l_xfrac_slash_left_sep_dim ,
- slash-left-mkern = \l_xfrac_slash_left_msep_tl ,
- slash-right-kern = \l_xfrac_slash_right_sep_dim ,
- slash-right-mkern = \l_xfrac_slash_right_msep_tl ,
- slash-symbol = \l_xfrac_slash_symbol_tl ,
- slash-symbol-font = \l_xfrac_slash_symbol_font_tl ,
- slash-symbol-format = \xfrac_slash_symbol_format:n ,
- v-scale = \l_xfrac_vscale_tl
+\DeclareTemplateType{xfrac}{3}
+\DeclareTemplate{xfrac}{text}{3}{
+ numerator-font = n [\f@family] \xfrac_numeratorfont:,
+ numerator-format = f1 [#1] \xfrac_numeratorformat:n,
+ slash-symbol = n [\textfractionsolidus]
+ \xfrac_slashsymbol:,
+ slash-symbol-font = n [\f@family] \xfrac_slashsymbolfont:,
+ slash-symbol-format = f1 [#1] \xfrac_slashsymbolformat:n,
+ denominator-font = n [\f@family] \xfrac_denominatorfont:,
+ denominator-format = f1 [#1] \xfrac_denominatorformat:n,
+ h-scale = n [1] \xfrac_hscale:,
+ v-scale = n [1] \xfrac_vscale:,
+ scale-factor = n [.83333] \xfrac_scalefactor:,
+ scale-relative = s [true]
+ { \cs_set:Npn \xfrac_relscale: {\box_ht:N\l_xfrac_slash_box}}
+ { \cs_set:Npn \xfrac_relscale: {
+ \dim_eval:n { \box_ht:N\l_xfrac_temp_box + \box_dp:N\l_xfrac_temp_box }} },
+ scaling = s [true]
+ {\cs_set:Npn\xfrac_fontscale: {
+ \fontsize{\xfrac_scalefactor: \xfrac_relscale:}{\c_zero_dim}\selectfont}}
+ { \cs_set_eq:NN \xfrac_fontscale: \prg_do_nothing: },
+ numerator-top-sep = L [\c_max_dim] \l_xfrac_numeratortopsep_fdim,
+ numerator-bot-sep = L [\c_max_dim] \l_xfrac_numeratorbotsep_fdim,
+ denominator-bot-sep = L [\c_max_dim] \l_xfrac_denominatorbotsep_fdim,
+ slash-right-kern = L [0pt] \l_xfrac_slashrightsep_fdim,
+ slash-left-kern = L [0pt] \l_xfrac_slashleftsep_fdim,
+ slash-right-mkern = n [-2mu] \l_xfrac_slashrightmsep_fmu,
+ slash-left-mkern = n [-1mu] \l_xfrac_slashleftmsep_fmu,
+ math-mode = s [false] { \cs_set_eq:NN \xfrac_math: \ensuremath }
+ { \cs_set_eq:NN \xfrac_math: \use:n },
+ phantom = n [8] \xfrac_phantom:,
+}{
+ \DoParameterAssignments
+ \mode_if_math:TF{
+ \cs_set_eq:NN \xfrac_textormath: \text
+ \cs_set:Npx \xfrac_slashfontchange: {\tex_fam:D \xfrac_slashsymbolfont: }
+ \cs_set:Npx \xfrac_numeratorfontchange: {\tex_fam:D \xfrac_numeratorfont: }
+ \cs_set:Npx \xfrac_denominatorfontchange: {\tex_fam:D \xfrac_denominatorfont: }
+ }{
+ \cs_set_eq:NN \xfrac_textormath: \mbox
+ \cs_set:Npn\xfrac_slashfontchange: {
+ \fontfamily{\xfrac_slashsymbolfont: }\selectfont}
+ \cs_set:Npn\xfrac_numeratorfontchange: {
+ \fontfamily{\xfrac_numeratorfont: }\selectfont}
+ \cs_set:Npn\xfrac_denominatorfontchange: {
+ \fontfamily{\xfrac_denominatorfont: }\selectfont}
}
- {
- \AssignTemplateKeys
- \mode_if_math:TF
+ \xfrac_textormath: {
+ \m@th
+ \sbox\l_xfrac_temp_box {\xfrac_math: {\vphantom{(}}}
+ \sbox\l_xfrac_slash_box {
+ \xfrac_math: {
+ \xfrac_slashsymbolformat:n {
+ \xfrac_math: {
+ \xfrac_slashfontchange:
+ \IfValueTF{#2}{#2}{\xfrac_slashsymbol: }
+ }
+ }
+ }
+ }
+ \dim_compare:nNnTF \l_xfrac_numeratortopsep_fdim = \c_max_dim
+ {
+ \dim_compare:nNnTF \l_xfrac_numeratorbotsep_fdim = \c_max_dim
{
- \cs_set_eq:NN \xfrac_text_or_math:n \text
- \cs_set_nopar:Npx \xfrac_denominator_font_change:
- { \tex_fam:D \l_xfrac_denominator_font_tl }
- \cs_set_nopar:Npx \xfrac_numerator_font_change:
- { \tex_fam:D \l_xfrac_numerator_font_tl }
- \cs_set_nopar:Npx \xfrac_slash_symbol_font_change:
- { \tex_fam:D \l_xfrac_slash_symbol_font_tl }
+ \cs_set:Npn\xfrac_next: {\raisebox{\box_ht:N\l_xfrac_slash_box
+ -\box_dp:N\l_xfrac_slash_box-\height}}
+ }{
+ \cs_set:Npn\xfrac_next: {\raisebox{\l_xfrac_numeratorbotsep_fdim }}
}
+ }
+ {
+ \dim_compare:nNnTF \l_xfrac_numeratorbotsep_fdim = \c_max_dim
{
- \cs_set_eq:NN \xfrac_text_or_math:n \mbox
- \cs_set_nopar:Npn \xfrac_denominator_font_change:
- {
- \fontfamily { \l_xfrac_denominator_font_tl }
- \selectfont
- }
- \cs_set_nopar:Npn \xfrac_numerator_font_change:
- {
- \fontfamily { \l_xfrac_numerator_font_tl }
- \selectfont
- }
- \cs_set_nopar:Npn \xfrac_slash_symbol_font_change:
- {
- \fontfamily { \l_xfrac_slash_symbol_font_tl }
- \selectfont
+ \cs_set:Npn\xfrac_next: {
+ \raisebox{
+ \box_ht:N\l_xfrac_slash_box - \l_xfrac_numeratortopsep_fdim
+ - \height
}
+ }
}
- \xfrac_text_or_math:n
{
- \m@th
- \hbox_set:Nn \l_xfrac_tmp_box
- { \xfrac_math:n { \vphantom { ( ) } } }
- \hbox_set:Nn \l_xfrac_slash_box
- {
- \xfrac_math:n
- {
- \xfrac_slash_symbol_format:n
- {
- \xfrac_math:n
- {
- \xfrac_slash_symbol_font_change:
- \IfNoValueTF {#2}
- { \l_xfrac_slash_symbol_tl } {#2}
- }
- }
- }
- }
- \cs_set_nopar:Npn \xfrac_tmp:w
- {
- \raisebox
- {
- \box_ht:N \l_xfrac_slash_box
- - \box_dp:N \l_xfrac_slash_box
- - \height
- }
- }
- \dim_compare:nNnTF
- { \l_xfrac_numerator_top_sep_dim } = { \c_max_dim }
- {
- \dim_compare:nNnF
- { \l_xfrac_numerator_bot_sep_dim } = { \c_max_dim }
- {
- \cs_set_nopar:Npn \xfrac_tmp:w
- {
- \raisebox
- { \dim_use:N \l_xfrac_numerator_bot_sep_dim }
- }
- }
- }
- {
- \dim_compare:nNnTF
- { \l_xfrac_numerator_bot_sep_dim } = { \c_max_dim }
- {
- \cs_set_nopar:Npn \xfrac_tmp:w
- {
- \raisebox
- {
- \box_ht:N \l_xfrac_slash_box
- - \dim_use:N \l_xfrac_numerator_top_sep_dim
- - \height
- }
- }
- }
- {
- \msg_error:nn { xfrac }
- { over-specified-numerator-sep }
- }
- }
- \xfrac_tmp:w
- {
- \xfrac_fontscale:
- \xfrac_numerator_format:n
- {
- \scalebox { \l_xfrac_hscale_tl } [ \l_xfrac_vscale_tl ]
- {
- \xfrac_math:n
- {
- \xfrac_numerator_font_change:
- {
- \vphantom { \l_xfrac_phantom_tl }
- #1
- }
- }
- }
- }
- }
- \xfrac_math:n
- { % THIS IS JUST WRONG!
- \mode_if_math:TF
- { \tex_mskip:D \l_xfrac_slash_right_msep_tl }
- { \tex_hskip:D \l_xfrac_slash_right_sep_dim }
- }
- \box_use:N \l_xfrac_slash_box
- \xfrac_math:n
- {
- \mode_if_math:TF
- { \tex_mskip:D \l_xfrac_slash_left_msep_tl }
- { \tex_hskip:D \l_xfrac_slash_left_sep_dim }
- }
- \dim_compare:nNnTF
- { \l_xfrac_denominator_bot_sep_dim } = { \c_max_dim }
- {
- \cs_set_nopar:Npn \xfrac_tmp:w
- { \raisebox { - \box_dp:N \l_xfrac_slash_box } }
- }
- {
- \cs_set_nopar:Npn \xfrac_tmp:w
- {
- \raisebox
- { \dim_use:N \l_xfrac_denominator_bot_sep_dim }
- }
- }
- \xfrac_tmp:w
- {
- \xfrac_fontscale:
- \xfrac_denominator_format:n
- {
- \scalebox { \l_xfrac_hscale_tl } [ \l_xfrac_vscale_tl ]
- {
- \xfrac_math:n
- {
- \xfrac_denominator_font_change:
- {
- \vphantom { \l_xfrac_phantom_tl }
- #3
- }
- }
- }
- }
- }
+ \PackageError{xfrac}
+ {You~ have~ specified~ both~ numerator-top-sep~ and~
+ numerator-bot-sep}
+ {I~ will~ pretend~ you~ didn't~ specify~ any~ of ~them}
+ \cs_set:Npn\xfrac_next: {\raisebox{\box_ht:N\l_xfrac_slash_box
+ -\box_dp:N\l_xfrac_slash_box-\height}}
+ }
+ }
+ \xfrac_next: {
+ \xfrac_fontscale:
+ \xfrac_numeratorformat:n {
+ \scalebox{\xfrac_hscale: }[\xfrac_vscale: ]
+ { \xfrac_math:{ \xfrac_numeratorfontchange:
+ {\vphantom{\xfrac_phantom: }#1} } }
}
+ }
+ \xfrac_math: { % THIS IS JUST WRONG!
+ \mode_if_math:TF { \mskip \l_xfrac_slashrightmsep_fmu }
+ {\hskip \l_xfrac_slashrightsep_fdim}
+ }
+ \usebox\l_xfrac_slash_box
+ \xfrac_math: {
+ \mode_if_math:TF {
+ \mskip \l_xfrac_slashleftmsep_fmu
+ }{
+ \hskip \l_xfrac_slashleftsep_fdim
+ } }
+ \dim_compare:nNnTF \l_xfrac_denominatorbotsep_fdim=\c_max_dim
+ { \raisebox{-\box_dp:N \l_xfrac_slash_box} }
+ {
+ \raisebox{\l_xfrac_denominatorbotsep_fdim}
+ }
+ {
+ \xfrac_fontscale:
+ \xfrac_denominatorformat:n {
+ \scalebox{\xfrac_hscale:}[\xfrac_vscale:]
+ { \xfrac_math: { \xfrac_denominatorfontchange:
+ {\vphantom{\xfrac_phantom: }#3} } }
+ }
+ }
}
-\DeclareRestrictedTemplate { xfrac } { text } { math } {
- numerator-font = \number \fam ,
- slash-symbol = / ,
- slash-symbol-font = \number \fam ,
- denominator-font = \number \fam ,
- scale-factor = 0.7 ,
- scale-relative = false ,
- scaling = true ,
- numerator-top-sep = 0 pt ,
- denominator-bot-sep = 0 pt ,
- math-mode = true ,
- phantom = (
}
-\DeclareInstance { xfrac } { default } { text } { }
-\DeclareInstance { xfrac } { mathdefault } { math } { }
-\DeclareCollectionInstance { plainmath } { xfrac } { mathdefault }
- { math }{
- denominator-bot-sep = 0 pt ,
- numerator-bot-sep = 0 pt ,
- numerator-top-sep = \c_max_dim ,
- scale-factor = 1 ,
- scale-relative = false ,
- scaling = true ,
- slash-right-mkern = 0mu ,
- slash-left-mkern = 0mu
+\DeclareRestrictedTemplate{xfrac}{math}{text}{
+ numerator-font = \number\fam,
+ slash-symbol = /,
+ slash-symbol-font = \number\fam,
+ denominator-font = \number\fam,
+ scale-factor = 0.7,
+ scale-relative = false,
+ scaling = true,
+ numerator-top-sep = 0pt,
+ denominator-bot-sep = 0pt,
+ math-mode = true,
+ phantom = (,
}
-\DeclareInstance { xfrac } { cmr } { text } {
- denominator-bot-sep = 0 pt ,
- numerator-top-sep = 0.2 ex ,
- slash-left-kern = -0.1 em ,
- slash-right-kern = -0.1 em
+\DeclareInstance{xfrac}{default}{text}{ }
+\DeclareInstance{xfrac}{mathdefault}{math}{ }
+\DeclareCollectionInstance{plainmath}{xfrac}{mathdefault}{math}{
+ denominator-bot-sep=0pt,
+ numerator-bot-sep=0pt,
+ numerator-top-sep=\c_max_dim,
+ scale-factor = 1,
+ scale-relative = false,
+ scaling = true,
+ slash-right-mkern=0mu,
+ slash-left-mkern=0mu,
}
-\DeclareInstance { xfrac } { cmss } { text } {
- denominator-bot-sep = 0 pt ,
- numerator-top-sep = 0.2 ex ,
- slash-left-kern = -0.1 em ,
- slash-right-kern = -0.1 em
+\DeclareInstance{xfrac}{cmr}{text}{
+ denominator-bot-sep=0pt,
+ numerator-top-sep=\DelayEvaluation{.2ex},
+ slash-left-kern=\DelayEvaluation{-.1em},
+ slash-right-kern=\DelayEvaluation{-.1em},
}
-\DeclareInstance { xfrac } { cmtt } { text } {
- denominator-bot-sep = 0 pt ,
- numerator-top-sep = 0.2 ex ,
- slash-left-kern = -0.1 em ,
- slash-right-kern = -0.1 em
+\DeclareInstance{xfrac}{cmss}{text}{
+ denominator-bot-sep=0pt,
+ numerator-top-sep=\DelayEvaluation{.2ex},
+ slash-left-kern=\DelayEvaluation{-.1em},
+ slash-right-kern=\DelayEvaluation{-.1em},
}
-\bool_if:NF \l_xfrac_cm_std_bool
- {
- \DeclareInstance { xfrac } { cmr } { text }
- { slash-symbol-font = ptm }
- \DeclareInstance { xfrac } { cmss } { text }
- { slash-symbol-font = ptm }
- \DeclareInstance { xfrac } { cmtt } { text }
- { slash-symbol-font = ppl }
- }
-\DeclareInstance { xfrac } { lmr } { text } {
- denominator-bot-sep = 0 pt ,
- numerator-top-sep = 0.1 ex ,
- slash-left-kern = -0.15 em ,
- slash-right-kern = -0.15 em
+\DeclareInstance{xfrac}{cmtt}{text}{
+ denominator-bot-sep=0pt,
+ numerator-top-sep=\DelayEvaluation{.2ex},
+ slash-left-kern=\DelayEvaluation{-.1em},
+ slash-right-kern=\DelayEvaluation{-.1em},
}
-\DeclareInstance { xfrac } { lmss } { text } {
- denominator-bot-sep = 0 pt ,
- numerator-top-sep = 0 pt ,
- slash-left-kern = -0.15 em ,
- slash-right-kern = -0.15 em
+\DeclareCollectionInstance{cm-recommended}{xfrac}{cmr}{text}{
+ slash-symbol-font = ptm,
}
-\DeclareInstance { xfrac } { lmtt } { text } {
- denominator-bot-sep = 0 pt ,
- numerator-top-sep = 0 pt ,
- slash-left-kern = -0.15 em ,
- slash-right-kern = -0.15 em
+\DeclareCollectionInstance{cm-recommended}{xfrac}{cmss}{text}{
+ slash-symbol-font = ptm,
}
-\msg_new:nnnn { xfrac } { over-specified-numerator-sep }
- {You have specified both numerator-top-sep and numerator-bot-sep}
- {I will pretend that you didn't specify either of them}
-\NewDocumentCommand \sfrac { o m o m } {
+\DeclareCollectionInstance{cm-recommended}{xfrac}{cmtt}{text}{
+ slash-symbol-font = ppl,
+}
+\bool_if:NT \g_cm_recommended_bool
+ {\UseCollection{xfrac}{cm-recommended}}
+\DeclareDocumentCommand \sfrac {o mom}{
\mode_if_math:TF
- {
- \IfInstanceExistTF { xfrac } { mathfam \number \fam }
- { \UseInstance { xfrac } { mathfam \number \fam } }
- { \UseInstance { xfrac } { mathdefault } }
- {#2} {#3} {#4}
- }
- {
- \IfInstanceExistTF { xfrac } {#1}
- { \UseInstance { xfrac } {#1} }
- {
- \IfInstanceExistTF { xfrac } { \f@family }
- { \UseInstance { xfrac } { \f@family } }
- { \UseInstance { xfrac } { default } }
- }
- {#2} {#3} {#4}
+{
+ \cs_set:Npx \xfrac_next: {mathfam\number\fam}
+ \IfExistsInstanceTF{xfrac}{\xfrac_next: }
+ {\UseInstance{xfrac}{\xfrac_next: }}
+ {\UseInstance{xfrac}{mathdefault}}
+ {#2}{#3}{#4}
+}
+{
+ \IfExistsInstanceTF{xfrac}{#1}
+ {\UseInstance{xfrac}{#1}{#2}{#3}{#4}}
+ {\IfExistsInstanceTF{xfrac}{\f@family}
+ {\UseInstance{xfrac}{\f@family}}
+ {\UseInstance{xfrac}{default}}
+ {#2}{#3}{#4}
}
+ }
}
\endinput
%%