1 files changed, 40 insertions, 19 deletions
diff --git a/Master/texmf-dist/source/latex/unicode-math/unicode-math.dtx b/Master/texmf-dist/source/latex/unicode-math/unicode-math.dtx
index ceaca6ea596..76fb00e32b6 100644
--- a/Master/texmf-dist/source/latex/unicode-math/unicode-math.dtx
+++ b/Master/texmf-dist/source/latex/unicode-math/unicode-math.dtx
@@ -31,7 +31,7 @@ This work is "author-maintained" by Will Robertson.
 %</internal>
 %<preamble>\ProvidesPackage{unicode-math}
 %<*preamble>
-  [2010/09/19 v0.5b Unicode maths in XeLaTeX and LuaLaTeX]
+  [2010/09/27 v0.5b Unicode maths in XeLaTeX and LuaLaTeX]
 %</preamble>
 %<*internal>
 \documentclass{ltxdoc}
@@ -266,6 +266,13 @@ This work is "author-maintained" by Will Robertson.
 % the same math type, such as \cs{mathopen}, or complete math alphabets such as \cs{mathbb}.
 % (Only numerical slots, however, can be used in ranged declarations.)
 %
+% \paragraph{\XeTeX\ users only}
+% \XeTeX\ uses the first maths font selected for choosing various parameters
+% such as the thickness of fraction rules and so on.
+% (In \LuaTeX, they are chosen automatically based on the current font.)
+% To select a new font for these parameters use \cs{resetmathfont},
+% which behaves identically to \cs{setmathfont}.
+%
 % \subsubsection{Control over maths alphabets}
 %
 % Exact control over maths alphabets can be somewhat involved.
@@ -1054,6 +1061,7 @@ This work is "author-maintained" by Will Robertson.
 \bool_new:N \l_um_ot_math_bool
 \bool_new:N \l_um_init_bool
 \bool_new:N \l_um_implicit_alph_bool
+\bool_new:N \g_um_mainfont_set_bool
 %    \end{macrocode}
 % For \opt{math-style}:
 %    \begin{macrocode}
@@ -2255,18 +2263,14 @@ This work is "author-maintained" by Will Robertson.
   \keys_set:nn {unicode-math} {#1}
   \um_fontspec_select_font:n {#2}
 %    \end{macrocode}
-% Check for the correct number of \cs{fontdimen}s:
-%    \begin{macrocode}
-%%  \ifdim \dimexpr\fontdimen9\l_um_font*65536\relax =65pt\relax
-%%    \bool_set_true:N \l_um_ot_math_bool
-%%  \else
-%%    \bool_set_false:N \l_um_ot_math_bool
-%%    \PackageWarningNoLine{unicode-math}{
-%%      The~ font~ '#2' ~is~ not~ a~ valid~ OpenType~ maths~ font.~
-%%      Some~ maths~ features~ will~ not~ be~ available~ or~ behave~
-%%      in~ a~ substandard~ manner
-%%    }
-%%  \fi
+% Check whether we're using a real maths font:
+%    \begin{macrocode}
+  \group_begin:
+    \fontfamily{\zf@family}\selectfont
+    \fontspec_if_script:nTF {math}
+      {\bool_gset_true:N  \l_um_ot_math_bool}
+      {\bool_gset_false:N \l_um_ot_math_bool}
+  \group_end:
 %    \end{macrocode}
 % If we're defining the full Unicode math repetoire, then we skip all
 % the parsing processing needed if we're only defining a subset.
@@ -2299,6 +2303,13 @@ This work is "author-maintained" by Will Robertson.
 %    \begin{macrocode}
   \DeclareSymbolFont{\um_symfont_tl}
     {\encodingdefault}{\zf@family}{\mddefault}{\updefault}
+  \bool_if:nT {\l_um_ot_math_bool && !\g_um_mainfont_set_bool} {
+    \bool_set_true:N \g_um_mainfont_set_bool
+    \DeclareSymbolFont{symbols}
+      {\encodingdefault}{\zf@family}{\mddefault}{\updefault}
+    \DeclareSymbolFont{largesymbols}
+      {\encodingdefault}{\zf@family}{\mddefault}{\updefault}
+  }
 %    \end{macrocode}
 % And now we input every single maths char.
 %    \begin{macrocode}
@@ -2325,6 +2336,16 @@ This work is "author-maintained" by Will Robertson.
 % \end{macro}
 %
 %
+% \begin{macro}{\resetmathfont}
+%    \begin{macrocode}
+\DeclareDocumentCommand \resetmathfont { O{} m } {
+  \bool_set_false:N \g_um_mainfont_set_bool
+  \setmathfont[#1]{#2}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+%
 % \begin{macro}{\um_fontspec_select_font:}
 % Select the font with \cs{fontspec} and define \cs{l_um_font} from it.
 %    \begin{macrocode}
@@ -2630,11 +2651,11 @@ This work is "author-maintained" by Will Robertson.
 % \subsection{OpenType maths font features}
 %    \begin{macrocode}
 \xetex_or_luatex:nnn { \um@zf@feature {ScriptStyle} }
-  { \zf@update@ff{+ssty=0} }
-  { \zf@update@ff{+ssty=1} }
+  { \fontspec_update_featstr:n {+ssty=0} }
+  { \fontspec_update_featstr:n {+ssty=1} }
 \xetex_or_luatex:nnn { \um@zf@feature {ScriptScriptStyle} }
-  { \zf@update@ff{+ssty=1} }
-  { \zf@update@ff{+ssty=2} }
+  { \fontspec_update_featstr:n {+ssty=1} }
+  { \fontspec_update_featstr:n {+ssty=2} }
 %    \end{macrocode}
 %
 % \subsection{Script and scriptscript font options}
@@ -3130,7 +3151,7 @@ This work is "author-maintained" by Will Robertson.
 %    \begin{macrocode}
   \clist_map_inline:nn {#2} {
     \cs_if_exist:cT {um_config_ \l_um_style_tl _##1:n} {
-      \tl_if_eq:nnTF {##1}{misc} {
+      \str_if_eq:nnTF {##1}{misc} {
         \um_maybe_init_alphabet:V \l_um_style_tl
         \clist_map_break:
       }{
@@ -3146,7 +3167,7 @@ This work is "author-maintained" by Will Robertson.
 %    \begin{macrocode}
   \clist_map_inline:nn {#2} {
     \cs_if_exist:cT {um_config_ \l_um_style_tl _##1:n} {
-      \tl_if_eq:nnTF {##1}{misc} {
+      \str_if_eq:nnTF {##1}{misc} {
         \um_trace:nx {setup-alph} {math \l_um_style_tl~(##1)}
         \use:c {um_config_ \l_um_style_tl _##1:n} {#3}
       }{