unicode-math (10sep15)

git-svn-id: svn://tug.org/texlive/trunk@38337 c570f23f-e606-0410-a88d-b1316a301751

8 files changed, 92 insertions, 147 deletions

diff --git a/Master/texmf-dist/doc/latex/unicode-math/README b/Master/texmf-dist/doc/latex/unicode-math/README.md
index 59104c0f330..7ee21e0946b 100644
--- a/Master/texmf-dist/doc/latex/unicode-math/README
+++ b/Master/texmf-dist/doc/latex/unicode-math/README.md
@@ -14,7 +14,7 @@ interface and functionality should not be considered completely stable. But
 the more the package is used the more stable it will become. (Things are
 generally working now; it is only minutiae that may change in the future.)
 
-Unicode maths is currently supported by the fonts
+Unicode maths is currently supported by the following fonts:
 
  - [Cambria Math][CM] (Microsoft),
  - [Minion Math][MM] (Johannes Küster, typoma GmbH)
@@ -59,9 +59,7 @@ Furthermore, it will be in a different font.
 REQUIREMENTS
 ------------
 
-As well as running XeTeX or LuaTeX, this package requires recent versions of
-the `fontspec`, `expl3`, `xpackages`, `catchfile`, `trimspaces`,
-`filehook`, and `lualatex-math` packages.
+As well as running XeTeX or LuaTeX, this package requires recent versions of the `fontspec`, `expl3`, `xpackages`, `filehook`, `ucharcat`, and `lualatex-math` packages.
 
 
 MAINTENANCE
@@ -70,8 +68,7 @@ MAINTENANCE
 The current release version is available from CTAN:
 > <http://tug.ctan.org/pkg/unicode-math>
 
-Latest developmental and archived historical versions are
-available from Github:
+Latest developmental and archived historical versions are available from Github:
 > <http://github.com/wspr/unicode-math>
 
 Please file bug reports with minimal examples:
@@ -82,6 +79,10 @@ Please file bug reports with minimal examples:
 CHANGE HISTORY
 --------------
 
+- v0.8b (2015/09/09)
+
+  * Bug fix: Use the "ucharcat" package to simplify some code that caused some headaches with \tl_rescan:nn.
+
 - v0.8a (2015/08/06)
 
   * Fix bug with \vert, \|, \(l/r)vert, etc., displaying with the wrong characters.
diff --git a/Master/texmf-dist/doc/latex/unicode-math/unicode-math.pdf b/Master/texmf-dist/doc/latex/unicode-math/unicode-math.pdf
index ae835ea73f3..52dcd15aebd 100644
--- a/Master/texmf-dist/doc/latex/unicode-math/unicode-math.pdf
+++ b/Master/texmf-dist/doc/latex/unicode-math/unicode-math.pdf
diff --git a/Master/texmf-dist/doc/latex/unicode-math/unimath-symbols.pdf b/Master/texmf-dist/doc/latex/unicode-math/unimath-symbols.pdf
index bad02fc07cc..438daaa27df 100644
--- a/Master/texmf-dist/doc/latex/unicode-math/unimath-symbols.pdf
+++ b/Master/texmf-dist/doc/latex/unicode-math/unimath-symbols.pdf
diff --git a/Master/texmf-dist/source/latex/unicode-math/unicode-math-compat.dtx b/Master/texmf-dist/source/latex/unicode-math/unicode-math-compat.dtx
index 6ab6f351241..f7768095976 100644
--- a/Master/texmf-dist/source/latex/unicode-math/unicode-math-compat.dtx
+++ b/Master/texmf-dist/source/latex/unicode-math/unicode-math-compat.dtx
@@ -217,7 +217,7 @@
       && \int_compare_p:nNn { \leftroot@ } = { \c_zero }
      }
      {
-      \luatexUroot \l_@@_radical_sqrt_tl { #1 } { #2 }
+        \Uroot \l_@@_radical_sqrt_tl { #1 } { #2 }
      }
      {
       \hbox_set:Nn \rootbox
@@ -258,7 +258,7 @@
       \mskip \uproot@ mu
       \c_math_toggle_token
      }
-    \luatexUroot \l_@@_radical_sqrt_tl
+      \Uroot \l_@@_radical_sqrt_tl
      {
       \box_move_up:nn { \box_wd:N \l_tmpa_box }
        {
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 848935c481b..3f4faf47fe0 100644
--- a/Master/texmf-dist/source/latex/unicode-math/unicode-math.dtx
+++ b/Master/texmf-dist/source/latex/unicode-math/unicode-math.dtx
@@ -69,7 +69,7 @@ This work is "maintained" by Will Robertson.
 %<preamble&XE>\ProvidesPackage{unicode-math-xetex}
 %<preamble&LU>\ProvidesPackage{unicode-math-luatex}
 %<*preamble>
-  [2014/08/06 v0.8a Unicode maths in XeLaTeX and LuaLaTeX]
+  [2015/09/09 v0.8b Unicode maths in XeLaTeX and LuaLaTeX]
 %</preamble>
 %<*internal>
 \def\DOCUMENTEND{F}
@@ -136,6 +136,7 @@ This work is "maintained" by Will Robertson.
 % \paragraph{Packages}
 %    \begin{macrocode}
 \RequirePackage{expl3}[2015/03/01]
+\RequirePackage{ucharcat}
 \RequirePackage{xparse}
 \RequirePackage{l3keys2e}
 \RequirePackage{fontspec}[2015/03/14]
@@ -148,6 +149,11 @@ This work is "maintained" by Will Robertson.
 \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}
@@ -370,7 +376,7 @@ This work is "maintained" by Will Robertson.
 %
 % Rather than `readable', in the end, this makes the code more extensible.
 %    \begin{macrocode}
-\cs_new:Nn \usv_set:nnn 
+\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 } }
@@ -637,7 +643,7 @@ This work is "maintained" by Will Robertson.
      }
     \use:c {@@_setup_active_frac:}
    }
-   
+
    {normalsize}
    {
     \bool_set_false:N \l_@@_smallfrac_bool
@@ -845,9 +851,9 @@ This work is "maintained" by Will Robertson.
     \@@_char_gmake_mathactive:n {#3}
     \@@_active_char_set:wc #3 \q_nil { \cs_to_str:N #2 _sym }
   \group_end:
-  
+
   \@@_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   }
@@ -958,18 +964,18 @@ This work is "maintained" by Will Robertson.
 \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
    {
@@ -1001,7 +1007,7 @@ This work is "maintained" by Will Robertson.
 %
 % \subsubsection{Text font}
 %    \begin{macrocode}
-\cs_generate_variant:Nn \tl_if_eq:nnT {o} 
+\cs_generate_variant:Nn \tl_if_eq:nnT {o}
 \cs_set:Nn \__fontspec_setmainfont:nn
  {
   \fontspec_set_family:Nnn \rmdefault {#1}{#2}
@@ -1122,7 +1128,7 @@ This work is "maintained" by Will Robertson.
   \bool_if:nT { \l_@@_ot_math_bool && !\g_@@_mainfont_already_set_bool }
    {
     \@@_declare_math_sizes:
-    \@@_fontspec_select_font: 
+    \@@_fontspec_select_font:
    }
 %    \end{macrocode}
 % Now define |\@@_symfont_tl| as the \LaTeX\ math font to access everything:
@@ -1523,7 +1529,7 @@ This work is "maintained" by Will Robertson.
   % ensure \left. and \right. work:
   \@@_set_delcode:nnn \@@_symfont_tl {`\.} {\c_zero}
   % this is forcefully done to fix a bug -- indicates a larger problem!
-  
+
   \@@_assign_delcode:nn {`\/}   {\g_@@_slash_delimiter_usv}
   \@@_assign_delcode:nn {"2044} {\g_@@_slash_delimiter_usv} % fracslash
   \@@_assign_delcode:nn {"2215} {\g_@@_slash_delimiter_usv} % divslash
@@ -1665,12 +1671,16 @@ This work is "maintained" by Will Robertson.
 % \begin{macro}{\@@_new_cramped_style:N}
 % \darg{command}
 % Define \meta{command} as a new cramped style switch.
-% For \LuaTeX, simply rename the correspronding primitive.
+% For \LuaTeX, simply rename the correspronding primitive if it is not
+% already defined.
 % For \XeTeX, define \meta{command} as a new quark.
 %    \begin{macrocode}
 \cs_new_protected_nopar:Nn \@@_new_cramped_style:N
 %<XE>  { \quark_new:N #1 }
-%<LU>  { \cs_new_eq:Nc #1 { luatex \cs_to_str:N #1 } }
+%<LU>  {
+%<LU>    \cs_if_exist:NF #1
+%<LU>      { \cs_new_eq:Nc #1 { luatex \cs_to_str:N #1 } }
+%<LU>  }
 %    \end{macrocode}
 % \end{macro}
 %
@@ -2011,24 +2021,24 @@ This work is "maintained" by Will Robertson.
 %    \begin{macrocode}
 \prg_new_conditional:Nnn \@@_if_mathalph_decl:n {TF}
  {
-  \tl_set:Nn  \l_@@_tmpa_tl {#1}  
+  \tl_set:Nn  \l_@@_tmpa_tl {#1}
   \tl_clear:N \l_@@_tmpb_tl
   \tl_clear:N \l_@@_tmpc_tl
-  
+
   \tl_if_in:NnT \l_@@_tmpa_tl {->}
    { \exp_after:wN \@@_split_arrow:w \l_@@_tmpa_tl \q_nil }
-   
+
   \tl_if_in:NnT \l_@@_tmpa_tl {/}
    { \exp_after:wN \@@_split_slash:w \l_@@_tmpa_tl \q_nil }
-  
-  \tl_set:Nx \l_@@_tmpa_tl { \tl_to_str:N \l_@@_tmpa_tl }  
+
+  \tl_set:Nx \l_@@_tmpa_tl { \tl_to_str:N \l_@@_tmpa_tl }
   \exp_args:NNx \tl_remove_all:Nn \l_@@_tmpa_tl { \token_to_str:N \math }
   \exp_args:NNx \tl_remove_all:Nn \l_@@_tmpa_tl { \token_to_str:N \sym }
   \tl_trim_spaces:N \l_@@_tmpa_tl
 
   \tl_if_empty:NT \l_@@_tmpc_tl
    { \tl_set_eq:NN \l_@@_tmpc_tl \l_@@_tmpa_tl }
-  
+
   \seq_if_in:NVTF \g_@@_named_ranges_seq \l_@@_tmpa_tl
    { \prg_return_true: } { \prg_return_false: }
  }
@@ -2326,7 +2336,7 @@ This work is "maintained" by Will Robertson.
 \clist_set:Nn \g_@@_named_ranges_clist
  {
   up, it, tt, bfup, bfit, bb , bbit, scr, bfscr, cal, bfcal,
-  frak, bffrak, sfup, sfit, bfsfup, bfsfit, bfsf 
+  frak, bffrak, sfup, sfit, bfsfup, bfsfit, bfsf
  }
 \clist_map_inline:Nn \g_@@_named_ranges_clist
  { \@@_new_named_range:n {#1} }
@@ -2427,7 +2437,7 @@ This work is "maintained" by Will Robertson.
 % The following are alphabets which do not have a math/text ambiguity.
 %    \begin{macrocode}
 \clist_map_inline:nn
- { 
+ {
    normal, bb , bbit, scr, bfscr, cal, bfcal, frak, bffrak, tt,
    bfup, bfit, sfup, sfit, bfsfup, bfsfit, bfsf
  }
@@ -2477,7 +2487,7 @@ This work is "maintained" by Will Robertson.
 %    \begin{document}
 %    \makeatletter
 %    ${\operator@font Mod}\, x$
-%    
+%
 %    \def\operator@font{%
 %      \let \math@bgroup \relax
 %      \def \math@egroup {\let \math@bgroup \@@math@bgroup
@@ -2496,7 +2506,7 @@ This work is "maintained" by Will Robertson.
 %    \begin{document}
 %    \makeatletter
 %    ${\operator@font Mod}\, x$
-%    
+%
 %    \def\operator@font{\mathgroup\symfoo}
 %    ${\operator@font Mod}\, x$
 %    \end{document}
@@ -2560,7 +2570,7 @@ This work is "maintained" by Will Robertson.
       \prop_get:cnN { g_@@_named_range_ \l_@@_style_tl _prop }
        { default-alpha } \l_@@_alphabet_clist
      }
-    
+
     \@@_setup_math_alphabet:
    }
   \seq_if_empty:NF \l_@@_missing_alph_seq { \@@_log:n { missing-alphabets } }
@@ -2980,10 +2990,17 @@ This work is "maintained" by Will Robertson.
 %
 % \section{Definitions of the active math characters}
 %
-% Here we define every Unicode math codepoint an equivalent macro name.
-% The two are equivalent, in a |\let\xyz=^^^^1234| kind of way.
-%
 % \begin{macro}{\@@_cs_set_eq_active_char:Nw}
+% This macro is used to give each Unicode math codepoint an equivalent macro name.
+% The two are equivalent, in a |\let\xyz=^^^^1234| kind of way. (For now!!)
+%    \begin{macrocode}
+\cs_set:Npn \@@_cs_set_eq_active_char:Nw #1 = "#2 \q_nil
+  {
+    \exp_last_unbraced:NNx \cs_gset_eq:NN #1 { \Ucharcat "#2 ~ 12 ~ }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
 % \begin{macro}{\@@_active_char_set:wc}
 % We need to do some trickery to transform the |\_@@_sym:nnn| argument
 % |"ABCDEF| into the \XeTeX\ `caret input' form |^^^^^abcdef|. It is \emph{very important}
@@ -2995,30 +3012,6 @@ This work is "maintained" by Will Robertson.
 %    \begin{macrocode}
 \group_begin:
   \char_set_catcode_other:N \^
-  \cs_gset:Npn \@@_cs_set_eq_active_char:Nw #1 = "#2 \q_nil
-   {
-    \tex_lowercase:D
-     {
-      \tl_rescan:nn
-       {
-        \ExplSyntaxOn
-        \char_set_catcode_other:N \{
-        \char_set_catcode_other:N \}
-        \char_set_catcode_other:N \&
-        \char_set_catcode_other:N \%
-        \char_set_catcode_other:N \$
-       }
-       {
-        \cs_gset_eq:NN #1 ^^^^^#2
-       }
-     }
-   }
-%    \end{macrocode}
-% Making |^| the right catcode isn't strictly necessary right now but it helps
-% to future proof us with, e.g., breqn.
-% Because we're inside a |\tl_rescan:nn|, use plain old \TeX\ syntax to avoid
-% any catcode problems.
-%    \begin{macrocode}
   \cs_new:Npn \@@_active_char_set:wc "#1 \q_nil #2
    {
     \tex_lowercase:D
@@ -3029,7 +3022,10 @@ This work is "maintained" by Will Robertson.
    }
 \group_end:
 %    \end{macrocode}
-% \end{macro}
+% Could be defined simply as the following if Ucharcar allowed active chars!
+% \begin{Verbatim}
+% \exp_last_unbraced:Nx \cs_gset_protected_nopar:Npx { \Ucharcat "#2 ~ 13 ~ } { \exp_not:c {#2} }
+% \end{Verbatim}
 % \end{macro}
 %
 % Now give \cmd\_@@_sym:nnn\ a definition in terms of \cmd\@@_cs_set_eq_active_char:Nw\
@@ -3045,7 +3041,7 @@ This work is "maintained" by Will Robertson.
     \char_set_catcode_math_superscript:N \^
     \cs_set:Npn \_@@_sym:nnn ##1##2##3
      {
-      \tl_if_in:nnT 
+      \tl_if_in:nnT
        { \mathord \mathalpha \mathbin \mathrel \mathpunct \mathop \mathfence }
        {##3}
       {
@@ -3057,22 +3053,6 @@ This work is "maintained" by Will Robertson.
   \group_end:
  }
 %    \end{macrocode}
-% Fix \cs{backslash}, which is defined as the escape char character
-% above:
-%    \begin{macrocode}
-\group_begin:
-  \lccode`\*=`\\
-  \char_set_catcode_escape:N \|
-  \char_set_catcode_other:N \\
-  |lowercase
-   {
-    |AtBeginDocument
-     {
-      |let|backslash=*
-     }
-   }
-|group_end:
-%    \end{macrocode}
 %
 % \section{Fall-back font}
 %
@@ -3261,7 +3241,7 @@ This work is "maintained" by Will Robertson.
 \cs_new:Nn \@@_scanprime_collect:N
  {
   \int_incr:N \l_@@_primecount_int
-  \peek_meaning_remove:NTF ' 
+  \peek_meaning_remove:NTF '
    { \@@_scanprime_collect:N #1 }
    {
     \peek_meaning_remove:NTF \@@_scan_prime:
@@ -3442,6 +3422,15 @@ This work is "maintained" by Will Robertson.
 %
 % \subsection{Unicode radicals}
 %
+% Make sure \cs{Uroot} is defined in the case where the \LaTeX{}
+% kernel doesn't make it available with its native name.
+%    \begin{macrocode}
+%<*LU>
+\cs_if_exist:NF \Uroot
+  { \cs_new_eq:NN \Uroot \luatexUroot }
+%</LU>
+%    \end{macrocode}
+%
 %    \begin{macrocode}
 \AtBeginDocument{\@@_redefine_radical:}
 \cs_new:Nn \@@_redefine_radical:
@@ -3493,7 +3482,7 @@ This work is "maintained" by Will Robertson.
 %    \begin{macrocode}
     \cs_set:Npn \root ##1 \of ##2
      {
-      \luatexUroot \l_@@_radical_sqrt_tl { ##1 } { ##2 }
+       \Uroot \l_@@_radical_sqrt_tl { ##1 } { ##2 }
      }
 %    \end{macrocode}
 % \end{macro}
@@ -3820,7 +3809,7 @@ This work is "maintained" by Will Robertson.
 %    \end{macrocode}
 % These are names that are `frozen' in HTML but have dumb names:
 %    \begin{macrocode}
-\def\dbkarow {\dbkarrow} 
+\def\dbkarow {\dbkarrow}
 \def\drbkarow{\drbkarrow}
 \def\hksearow{\hksearrow}
 \def\hkswarow{\hkswarrow}
diff --git a/Master/texmf-dist/tex/latex/unicode-math/unicode-math-luatex.sty b/Master/texmf-dist/tex/latex/unicode-math/unicode-math-luatex.sty
index 1866de6a515..06bf4687261 100644
--- a/Master/texmf-dist/tex/latex/unicode-math/unicode-math-luatex.sty
+++ b/Master/texmf-dist/tex/latex/unicode-math/unicode-math-luatex.sty
@@ -530,7 +530,10 @@
 \tl_new:N \l__um_radicals_tl
 \tl_set:Nn \l__um_radicals_tl {\sqrt \longdivision}
 \cs_new_protected_nopar:Nn \__um_new_cramped_style:N
-  { \cs_new_eq:Nc #1 { luatex \cs_to_str:N #1 } }
+  {
+    \cs_if_exist:NF #1
+      { \cs_new_eq:Nc #1 { luatex \cs_to_str:N #1 } }
+  }
 \__um_new_cramped_style:N \crampeddisplaystyle
 \__um_new_cramped_style:N \crampedtextstyle
 \__um_new_cramped_style:N \crampedscriptstyle
@@ -1160,26 +1163,12 @@
  }
 \CatchFileEdef \g__um_mathtable_tl {unicode-math-table.tex} {\__um_symbol_setup:}
 \cs_new:Nn \__um_input_math_symbol_table: {\g__um_mathtable_tl}
+\cs_set:Npn \__um_cs_set_eq_active_char:Nw #1 = "#2 \q_nil
+  {
+    \exp_last_unbraced:NNx \cs_gset_eq:NN #1 { \Ucharcat "#2 ~ 12 ~ }
+  }
 \group_begin:
   \char_set_catcode_other:N \^
-  \cs_gset:Npn \__um_cs_set_eq_active_char:Nw #1 = "#2 \q_nil
-   {
-    \tex_lowercase:D
-     {
-      \tl_rescan:nn
-       {
-        \ExplSyntaxOn
-        \char_set_catcode_other:N \{
-        \char_set_catcode_other:N \}
-        \char_set_catcode_other:N \&
-        \char_set_catcode_other:N \%
-        \char_set_catcode_other:N \$
-       }
-       {
-        \cs_gset_eq:NN #1 ^^^^^#2
-       }
-     }
-   }
   \cs_new:Npn \__um_active_char_set:wc "#1 \q_nil #2
    {
     \tex_lowercase:D
@@ -1207,18 +1196,6 @@
     \__um_input_math_symbol_table:
   \group_end:
  }
-\group_begin:
-  \lccode`\*=`\\
-  \char_set_catcode_escape:N \|
-  \char_set_catcode_other:N \\
-  |lowercase
-   {
-    |AtBeginDocument
-     {
-      |let|backslash=*
-     }
-   }
-|group_end:
 \AtBeginDocument { \__um_load_lm_if_necessary: }
 \cs_new:Nn \__um_load_lm_if_necessary:
   {
@@ -1510,6 +1487,8 @@
     \cs_set_eq:NN ^^^^2037 \__um_scan_sup_backtrprime:
    }
 \group_end:
+\cs_if_exist:NF \Uroot
+  { \cs_new_eq:NN \Uroot \luatexUroot }
 \AtBeginDocument{\__um_redefine_radical:}
 \cs_new:Nn \__um_redefine_radical:
  {
@@ -1517,7 +1496,7 @@
    {
     \cs_set:Npn \root ##1 \of ##2
      {
-      \luatexUroot \l__um_radical_sqrt_tl { ##1 } { ##2 }
+       \Uroot \l__um_radical_sqrt_tl { ##1 } { ##2 }
      }
    }
  }
@@ -1869,7 +1848,7 @@
       && \int_compare_p:nNn { \leftroot@ } = { \c_zero }
      }
      {
-      \luatexUroot \l__um_radical_sqrt_tl { #1 } { #2 }
+        \Uroot \l__um_radical_sqrt_tl { #1 } { #2 }
      }
      {
       \hbox_set:Nn \rootbox
@@ -1910,7 +1889,7 @@
       \mskip \uproot@ mu
       \c_math_toggle_token
      }
-    \luatexUroot \l__um_radical_sqrt_tl
+      \Uroot \l__um_radical_sqrt_tl
      {
       \box_move_up:nn { \box_wd:N \l_tmpa_box }
        {
diff --git a/Master/texmf-dist/tex/latex/unicode-math/unicode-math-xetex.sty b/Master/texmf-dist/tex/latex/unicode-math/unicode-math-xetex.sty
index b7b7113ee80..a5cac59aec8 100644
--- a/Master/texmf-dist/tex/latex/unicode-math/unicode-math-xetex.sty
+++ b/Master/texmf-dist/tex/latex/unicode-math/unicode-math-xetex.sty
@@ -1188,26 +1188,12 @@
  }
 \CatchFileEdef \g__um_mathtable_tl {unicode-math-table.tex} {\__um_symbol_setup:}
 \cs_new:Nn \__um_input_math_symbol_table: {\g__um_mathtable_tl}
+\cs_set:Npn \__um_cs_set_eq_active_char:Nw #1 = "#2 \q_nil
+  {
+    \exp_last_unbraced:NNx \cs_gset_eq:NN #1 { \Ucharcat "#2 ~ 12 ~ }
+  }
 \group_begin:
   \char_set_catcode_other:N \^
-  \cs_gset:Npn \__um_cs_set_eq_active_char:Nw #1 = "#2 \q_nil
-   {
-    \tex_lowercase:D
-     {
-      \tl_rescan:nn
-       {
-        \ExplSyntaxOn
-        \char_set_catcode_other:N \{
-        \char_set_catcode_other:N \}
-        \char_set_catcode_other:N \&
-        \char_set_catcode_other:N \%
-        \char_set_catcode_other:N \$
-       }
-       {
-        \cs_gset_eq:NN #1 ^^^^^#2
-       }
-     }
-   }
   \cs_new:Npn \__um_active_char_set:wc "#1 \q_nil #2
    {
     \tex_lowercase:D
@@ -1235,18 +1221,6 @@
     \__um_input_math_symbol_table:
   \group_end:
  }
-\group_begin:
-  \lccode`\*=`\\
-  \char_set_catcode_escape:N \|
-  \char_set_catcode_other:N \\
-  |lowercase
-   {
-    |AtBeginDocument
-     {
-      |let|backslash=*
-     }
-   }
-|group_end:
 \AtBeginDocument { \__um_load_lm_if_necessary: }
 \cs_new:Nn \__um_load_lm_if_necessary:
   {
@@ -1968,7 +1942,7 @@
       && \int_compare_p:nNn { \leftroot@ } = { \c_zero }
      }
      {
-      \luatexUroot \l__um_radical_sqrt_tl { #1 } { #2 }
+        \Uroot \l__um_radical_sqrt_tl { #1 } { #2 }
      }
      {
       \hbox_set:Nn \rootbox
@@ -2009,7 +1983,7 @@
       \mskip \uproot@ mu
       \c_math_toggle_token
      }
-    \luatexUroot \l__um_radical_sqrt_tl
+      \Uroot \l__um_radical_sqrt_tl
      {
       \box_move_up:nn { \box_wd:N \l_tmpa_box }
        {
diff --git a/Master/texmf-dist/tex/latex/unicode-math/unicode-math.sty b/Master/texmf-dist/tex/latex/unicode-math/unicode-math.sty
index ff499293d04..584b03f79e7 100644
--- a/Master/texmf-dist/tex/latex/unicode-math/unicode-math.sty
+++ b/Master/texmf-dist/tex/latex/unicode-math/unicode-math.sty
@@ -19,7 +19,7 @@
 %% 
 %% This work is "maintained" by Will Robertson.
 \ProvidesPackage{unicode-math}
-  [2014/08/06 v0.8a Unicode maths in XeLaTeX and LuaLaTeX]
+  [2015/09/09 v0.8b Unicode maths in XeLaTeX and LuaLaTeX]
 \usepackage{ifxetex,ifluatex}
 \ifxetex
   \ifdim\number\XeTeXversion\XeTeXrevision in<0.9998in%
@@ -42,6 +42,7 @@
   }\@ehd
 \fi\fi
 \RequirePackage{expl3}[2015/03/01]
+\RequirePackage{ucharcat}
 \RequirePackage{xparse}
 \RequirePackage{l3keys2e}
 \RequirePackage{fontspec}[2015/03/14]
@@ -49,6 +50,7 @@
 \RequirePackage{fix-cm} % avoid some warnings
 \RequirePackage{filehook}
 \ExplSyntaxOn
+\cs_set_protected_nopar:Npn \exp_last_unbraced:NNx { \::N \::x_unbraced \::: }
 \cs_generate_variant:Nn \fontspec_set_family:Nnn {Nx}
 \cs_generate_variant:Nn \fontspec_set_fontface:NNnn {NNx}
 \bool_new:N \l__um_ot_math_bool