summaryrefslogtreecommitdiff
path: root/macros/latex/contrib/unicode-math/um-code-main.dtx
blob: ff132044e051d29c39b5fd2c377bd7e10fd48f67 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
%%^^A%% um-code-main.dtx -- part of UNICODE-MATH <wspr.io/unicode-math>
%%^^A%% Definition of `\setmainfont`.

% \section{The main \cs{setmathfont} macro}
%
%    \begin{macrocode}
%<*package>
%    \end{macrocode}
%
% \begin{macro}{\@@_setmathfont:nn}
% \darg{keyval options}
% \darg{font name/file}
%    \begin{macrocode}
\@@_cs_new:Nn \@@_setmathfont:nn
  {
%    \end{macrocode}
% \begin{itemize}
% \item Initialise all local variables.
% \item
% Erase any conception \LaTeX\ has of previously defined math symbol fonts;
% this allows \cmd\DeclareSymbolFont\ at any point in the document.
% \item
% Grab the current size information:
% (is this robust enough? Maybe it should be preceded by \cmd\normalsize).
% The macro \cmd\S@\meta{size}
% contains the definitions of the sizes used for maths letters, subscripts and subsubscripts in
% \cmd\tf@size, \cmd\sf@size, and \cmd\ssf@size, respectively.
% \end{itemize}
%    \begin{macrocode}

    \@@_init:n {#2}
    \cs_set_eq:NN \glb@currsize \scan_stop:
    \cs_if_exist:cF { S@ \f@size } { \calculate@math@sizes }
    \use:c { S@ \f@size }

    \keys_set_known:nnN {unicode-math} {#1} \l_@@_unknown_keys_clist

    \bool_if:NT \g_@@_init_bool \@@_fontspec_trial_font:
    \bool_if:NT \g_@@_init_bool \@@_declare_math_sizes:

    \@@_fontspec_select_font:
    \@@_setup_math_fam:
    \bool_if:NT \g_@@_init_bool
      {
        \@@_setup_legacy_fam_two:
        \@@_setup_legacy_fam_three:
      }

    \@@_input_math_symbol_table:

%    \end{macrocode}
% \begin{itemize}
% \item the `once-off' setup that doesn't need to be per-font
% \item remap symbols that don't take their natural mathcode;
% \item activate any symbols that need to be math-active;
% \item assign delimiter codes for symbols that need to grow;
% \item setup the maths alphabets (\cs{symbf} etc.) ---
%       this is an extensive part of the code; see Section~\ref{sec:mathmap};
% \end{itemize}
%    \begin{macrocode}
    \bool_if:NT \g_@@_init_bool \@@_onceoff_setup:
    \@@_remap_symbols:
    \@@_setup_mathactives:
    \@@_setup_delcodes:
    \@@_setup_alphabets:

    %% TODO: what of the above should only be run for the "default"/"main" font?

    \bool_if:NTF \g_@@_init_bool
      {
        \bool_gset_true:N \g_@@_main_font_defined_bool
%<LU>   \@@_mathparam_store:
        \@@_log:n {default-math-font}
      }
      {
%<LU>   \@@_mathparam_restore:
      }
  }
%    \end{macrocode}
% \end{macro}
%
% \paragraph{Fall-back font}
%
% Want to load Latin Modern Math if nothing else.
% This needs to happen early so that all of the font-loading machinery executes before
% the other `AtBeginDocument' code.
%    \begin{macrocode}
\AtBeginDocument { \bool_if:NF \g_@@_main_font_defined_bool \@@_load_lm: }
\@@_cs_new:Nn \@@_load_lm:
  {
    \setmathfont{latinmodern-math.otf}[BoldFont={latinmodern-math.otf}]
  }
%    \end{macrocode}
%
% \begin{macro}{\@@_init:n}
% Reset local variables.
% Default to defining the font for every math symbol character.
%    \begin{macrocode}
\@@_cs_new:Nn \@@_init:n
  {
    \tl_set:Nn \l_@@_fontname_tl {#1}
    \bool_gset_true:N  \g_@@_ot_math_bool
    \tl_set:Nn \l_@@_mversion_tl      {normal}
    \tl_set:Nn \l_@@_symfont_label_tl {operators}

    \tl_set:Nn    \l_@@_script_features_tl  {Style=MathScript}
    \tl_set:Nn    \l_@@_sscript_features_tl {Style=MathScriptScript}
    \tl_set_eq:NN \l_@@_script_font_tl      \l_@@_fontname_tl
    \tl_set_eq:NN \l_@@_sscript_font_tl     \l_@@_fontname_tl

    \bool_gset_true:N \g_@@_init_bool
    \seq_gclear:N    \g_@@_char_range_seq
    \clist_clear:N   \l_@@_mathmap_charints_clist
    \seq_gclear:N    \g_@@_mathalph_seq
    \seq_clear:N     \l_@@_missing_alph_seq

    \cs_set_eq:NN \_@@_sym:nnn                  \@@_process_symbol_noparse:nnn
    \cs_set_eq:NN \@@_remap_symbol:nnn          \@@_remap_symbol_noparse:nnn
    \cs_set_eq:NN \@@_maybe_init_alphabet:n     \@@_init_alphabet:n
    \cs_set_eq:NN \@@_assign_delcode:nn         \@@_assign_delcode_noparse:nn
    \cs_set_eq:NN \@@_make_mathactive:nNN       \@@_make_mathactive_noparse:nNN
  }
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_declare_math_sizes:}
% Set the math sizes according to the recommended font parameters.
%    \begin{macrocode}
\tl_new:N \g_@@_main_font_cmd_tl
\cs_new:Nn \@@_sf_size:  { \@@_fontdimen_pc_to_pt:nN {10} \g_@@_trial_font }
\cs_new:Nn \@@_ssf_size: { \@@_fontdimen_pc_to_pt:nN {11} \g_@@_trial_font }
\@@_cs_new:Nn \@@_declare_math_sizes:
  {
    \fp_gset:Nn \g_@@_size_tfsf_fp   { (\f@size + \@@_sf_size: )/2 }
    \fp_gset:Nn \g_@@_size_sfssf_fp  { (\@@_sf_size: + \@@_ssf_size:)/2 }

    \dim_compare:nF { \fontdimen 10 \g_@@_trial_font == 0pt }
      {
        \DeclareMathSizes { \f@size } { \f@size } { \@@_sf_size: } { \@@_ssf_size: }
      }
  }
%    \end{macrocode}
% \end{macro}
%
%
%
% \begin{macro}{\@@_fontspec_trial_font:}
%    \begin{macrocode}
\@@_cs_new:Nn \@@_fontspec_trial_font:
  {
    \tl_set:Nx \l_@@_font_keyval_tl
      {
%<LU>   Renderer = Basic,
        BoldItalicFont = {}, ItalicFont = {}, SmallCapsFont = {},
        Script = Math,
%<LU>   FontAdjustment = { \@@_luatex_copy_fontdimens: },
        \l_@@_unknown_keys_clist
      }

    \fontspec_set_family:Nxn \l_@@_trial_family_tl {\l_@@_font_keyval_tl} {\l_@@_fontname_tl}

    \group_begin:
      \fontfamily { \l_@@_trial_family_tl } \selectfont
      \exp_last_unbraced:NNo \@@_fontface_gset_eq:NN \g_@@_trial_font \font@name
      \fontspec_if_script:nF {math}
        {
          \@@_warning:n {not-ot-math}
          \bool_gset_false:N \g_@@_ot_math_bool
          \bool_gset_false:N \g_@@_init_bool
        }
    \group_end:

  }
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_fontspec_select_font:}
%    \begin{macrocode}
\@@_cs_new:Nn \@@_fontspec_select_font:
  {
    \tl_set:Nx \l_@@_font_keyval_tl
      {
%<LU>   Renderer = Basic,
        BoldItalicFont = {}, ItalicFont = {}, SmallCapsFont = {},
        Script = Math,
        SizeFeatures =
          {
            {
              Size = \fp_use:N \g_@@_size_tfsf_fp -
            } ,
            {
              Size = \fp_use:N \g_@@_size_sfssf_fp - \fp_use:N \g_@@_size_tfsf_fp ,
              Font = \l_@@_script_font_tl ,
              \l_@@_script_features_tl
            } ,
            {
              Size = - \fp_use:N \g_@@_size_sfssf_fp ,
              Font = \l_@@_sscript_font_tl ,
              \l_@@_sscript_features_tl
            }
          } ,
%<LU>   FontAdjustment = { \@@_luatex_copy_fontdimens: },
        \l_@@_unknown_keys_clist
      }

    \fontspec_set_family:Nxn \l_@@_family_tl {\l_@@_font_keyval_tl} {\l_@@_fontname_tl}

    \int_gincr:N \g_@@_fonts_used_int
    \group_begin:
      \fontfamily { \l_@@_family_tl } \selectfont
      \exp_last_unbraced:Nno \@@_fontface_gset_eq:cN {g_@@_mathfont_ \int_use:N \g_@@_fonts_used_int _font} \font@name
      \tl_gset:Nx \g_@@_curr_font_cmd_tl { \exp_not:c {g_@@_mathfont_ \int_use:N \g_@@_fonts_used_int _font} }
      \bool_if:NT \g_@@_init_bool
				{
					\exp_last_unbraced:NNo \@@_fontface_gset_eq:NN \l_@@_font \font@name
				}
    \group_end:
  }
%    \end{macrocode}
% \end{macro}
%
%    \begin{macrocode}
\tl_gset:Nn \g_@@_main_font_cmd_tl  { \l_@@_font }
\tl_gset:Nn \g_@@_sqrt_font_cmd_tl  { \l_@@_font }
\tl_gset:Nn \g_@@_prime_font_cmd_tl { \l_@@_font }
%    \end{macrocode}
%
% \begin{macro}{\@@_luatex_copy_fontdimens:}
% This performs a once-off copy of the LuaTeX math params into XeTeX-like fontdimens.
% While the list is somewhat comprehensive, these are really only for backwards compatibility
% and to allow a little shared code. They shouldn't be relied upon, since LuaTeX users
% might change the math params, which wouldn't be reflected in the fontdimens.
%    \begin{macrocode}
%<*LU>
\@@_cs_new:Nn \@@_luatex_copy_fontdimens:
  {
    \@@_fontdimen_from_param:nn {10} {ScriptPercentScaleDown}
    \@@_fontdimen_from_param:nn {11} {ScriptScriptPercentScaleDown}
    \@@_fontdimen_from_param:nn {15} {AxisHeight}
    \@@_fontdimen_from_param:nn {18} {SubscriptShiftDown}
    \@@_fontdimen_from_param:nn {20} {SubscriptBaselineDropMin}
    \@@_fontdimen_from_param:nn {21} {SuperscriptShiftUp}
    \@@_fontdimen_from_param:nn {22} {SuperscriptShiftUpCramped}
    \@@_fontdimen_from_param:nn {24} {SuperscriptBaselineDropMax}
    \@@_fontdimen_from_param:nn {28} {UpperLimitGapMin}
    \@@_fontdimen_from_param:nn {29} {UpperLimitBaselineRiseMin}
    \@@_fontdimen_from_param:nn {30} {LowerLimitGapMin}
    \@@_fontdimen_from_param:nn {31} {LowerLimitBaselineDropMin}
    \@@_fontdimen_from_param:nn {32} {StackTopShiftUp}
    \@@_fontdimen_from_param:nn {42} {FractionNumeratorShiftUp}
    \@@_fontdimen_from_param:nn {43} {FractionNumeratorDisplayStyleShiftUp}
    \@@_fontdimen_from_param:nn {44} {FractionDenominatorShiftDown}
    \@@_fontdimen_from_param:nn {45} {FractionDenominatorDisplayStyleShiftDown}
    \@@_fontdimen_from_param:nn {48} {FractionRuleThickness}
  }
%</LU>
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_setup_math_fam:}
%    \begin{macrocode}
\@@_cs_new:Nn \@@_setup_math_fam:
  {
    \cs_if_exist:cF { sym \l_@@_symfont_label_tl }
      {
        \DeclareSymbolFont{\l_@@_symfont_label_tl}
          {\encodingdefault}{\l_@@_family_tl}{\mddefault}{\shapedefault}
      }
    \SetSymbolFont{\l_@@_symfont_label_tl}{\l_@@_mversion_tl}
      {\encodingdefault}{\l_@@_family_tl}{\mddefault}{\shapedefault}
%    \end{macrocode}
% Set the bold math version.
%    \begin{macrocode}
    \str_if_eq:eeT {\l_@@_mversion_tl} {normal}
      {
        \SetSymbolFont{\l_@@_symfont_label_tl}{bold}
          {\encodingdefault}{\l_@@_family_tl}{\bfdefault}{\shapedefault}
      }
  }
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_setup_legacy_fam_two:}
% \TeX\ won't load the same font twice at the same scale, so we need to magnify this one by an imperceptable amount.
% Note that for extreme font sizes, this scaling value might need to be adjusted.
% 1.0001 should be enough for reasonable use cases however.
%    \begin{macrocode}
\@@_cs_new:Nn \@@_setup_legacy_fam_two:
  {
    \fontspec_set_family:Nxn \l_@@_fam_two_tl
      {
        \l_@@_font_keyval_tl,
        ScaleAgain = 1.0001,
        FontAdjustment =
          {
            \@@_copy_fontdimen:nnN { 8} {43} \g_@@_main_font_cmd_tl
            \@@_copy_fontdimen:nnN { 9} {42} \g_@@_main_font_cmd_tl
            \@@_copy_fontdimen:nnN {10} {32} \g_@@_main_font_cmd_tl
            \@@_copy_fontdimen:nnN {11} {45} \g_@@_main_font_cmd_tl
            \@@_copy_fontdimen:nnN {12} {44} \g_@@_main_font_cmd_tl
            \@@_copy_fontdimen:nnN {13} {21} \g_@@_main_font_cmd_tl
            \@@_copy_fontdimen:nnN {14} {21} \g_@@_main_font_cmd_tl
            \@@_copy_fontdimen:nnN {15} {22} \g_@@_main_font_cmd_tl
            \@@_copy_fontdimen:nnN {16} {18} \g_@@_main_font_cmd_tl
            \@@_copy_fontdimen:nnN {17} {18} \g_@@_main_font_cmd_tl
            \@@_copy_fontdimen:nnN {18} {24} \g_@@_main_font_cmd_tl
            \@@_copy_fontdimen:nnN {19} {20} \g_@@_main_font_cmd_tl
            \@@_copy_fontdimen:nnN {22} {15} \g_@@_main_font_cmd_tl
            \@@_zero_fontdimen:n   {20} % delim1 = FractionDelimiterDisplaySize
            \@@_zero_fontdimen:n   {21} % delim2 = FractionDelimiterSize
         }
      } {\l_@@_fontname_tl}

    \SetSymbolFont{symbols}{\l_@@_mversion_tl}
      {\encodingdefault}{\l_@@_fam_two_tl}{\mddefault}{\shapedefault}

    \str_if_eq:eeT {\l_@@_mversion_tl} {normal}
      {
        \SetSymbolFont{symbols}{bold}
          {\encodingdefault}{\l_@@_fam_two_tl}{\bfdefault}{\shapedefault}
      }
  }
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_setup_legacy_fam_three:}
% Similarly, this font is shrunk by an imperceptable amount for \TeX\ to load it again.
%    \begin{macrocode}
\@@_cs_new:Nn \@@_setup_legacy_fam_three:
  {
    \fontspec_set_family:Nxn \l_@@_fam_three_tl
      {
        \l_@@_font_keyval_tl,
        ScaleAgain = 0.9999,
        FontAdjustment = {
          \@@_copy_fontdimen:nnN { 8} {48} \g_@@_main_font_cmd_tl
          \@@_copy_fontdimen:nnN { 9} {28} \g_@@_main_font_cmd_tl
          \@@_copy_fontdimen:nnN {10} {30} \g_@@_main_font_cmd_tl
          \@@_copy_fontdimen:nnN {11} {29} \g_@@_main_font_cmd_tl
          \@@_copy_fontdimen:nnN {12} {31} \g_@@_main_font_cmd_tl
          \@@_zero_fontdimen:n   {13}
       }
      } {\l_@@_fontname_tl}

    \SetSymbolFont{largesymbols}{\l_@@_mversion_tl}
      {\encodingdefault}{\l_@@_fam_three_tl}{\mddefault}{\shapedefault}

    \str_if_eq:eeT {\l_@@_mversion_tl} {normal}
      {
        \SetSymbolFont{largesymbols}{bold}
          {\encodingdefault}{\l_@@_fam_three_tl}{\bfdefault}{\shapedefault}
      }
  }
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_onceoff_setup:}
%    \begin{macrocode}
\@@_cs_new:Nn \@@_onceoff_setup:
  {
    \@@_set_delcode:nnn {operators} {`\.} {0}
  }
%    \end{macrocode}
% \end{macro}
%
% \subsection{Functions for setting up symbols with mathcodes}
% \seclabel{mathsymbol}
%
% \begin{macro}{\@@_process_symbol_noparse:nnn}
% \begin{macro}{\@@_process_symbol_parse:nnn}
% If the \feat{range} font feature has been used, then only
% a subset of the Unicode glyphs are to be defined.
% See \secref{rangeproc} for the code that enables this.
%    \begin{macrocode}
\cs_set:Nn \@@_process_symbol_noparse:nnn
  {
    \@@_set_mathsymbol:nNNn {\l_@@_symfont_label_tl} #2 #3 {#1}
  }
%    \end{macrocode}
%    \begin{macrocode}
\cs_set:Nn \@@_process_symbol_parse:nnn
  {
    \@@_if_char_spec:nNT {#1} {#3}
      {
        \@@_process_symbol_noparse:nnn {#1} {#2} {#3}
      }
  }
%    \end{macrocode}
% \end{macro}
% \end{macro}
%
% \begin{macro}{\@@_remap_symbols:}
% This function is used to define the mathcodes for those chars which should
% be mapped to a different glyph than themselves.
%    \begin{macrocode}
\@@_cs_new:Nn \@@_remap_symbols:
  {
    \@@_remap_symbol:nnn {`\-} {\mathbin} {"2212}
    \@@_remap_symbol:nnn {`\*} {\mathbin} {"02217}% text asterisk to "centred asterisk"
    \bool_if:NF \g_@@_literal_colon_bool
      {
        \@@_remap_symbol:nnn {`\:} {\mathrel} {"02236}% colon to ratio (i.e., punct to rel)
      }
  }
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_remap_symbol_noparse:nnn}
% \begin{macro}{\@@_remap_symbol_parse:nnn}
% Where |\@@_remap_symbol:nnn| is defined to be one of these two, depending
% on the range setup:
%    \begin{macrocode}
\cs_new:Nn \@@_remap_symbol_parse:nnn
  {
    \@@_if_char_spec:nNT {#3} {#2}
      { \@@_remap_symbol_noparse:nnn {#1} {#2} {#3} }
  }
\cs_new:Nn \@@_remap_symbol_noparse:nnn
  {
    \clist_map_inline:nn {#1}
      { \@@_set_mathcode:nnnn {##1} {#2} {\l_@@_symfont_label_tl} {#3} }
  }
%    \end{macrocode}
% \end{macro}
% \end{macro}
%
% \subsection{Active math characters}
%
% There are more math active chars later in the subscript/superscript section.
% But they don't need to be able to be typeset directly.
%
% \begin{macro}{\@@_setup_mathactives:}
% TODO: if not an OpenType math font, we should ignore doing anything with primes.
% This needs a revamped `range` feature, I think.
%    \begin{macrocode}
\@@_cs_new:Nn \@@_setup_mathactives:
  {
		\@@_make_mathactive:nNN {"2032} \@@_prime_single_mchar \mathord
		\@@_make_mathactive:nNN {"2033} \@@_prime_double_mchar \mathord
		\@@_make_mathactive:nNN {"2034} \@@_prime_triple_mchar \mathord
		\@@_make_mathactive:nNN {"2057} \@@_prime_quad_mchar   \mathord
		\@@_make_mathactive:nNN {"2035} \@@_backprime_single_mchar \mathord
		\@@_make_mathactive:nNN {"2036} \@@_backprime_double_mchar \mathord
		\@@_make_mathactive:nNN {"2037} \@@_backprime_triple_mchar \mathord
    \@@_make_mathactive:nNN {`\'} \mathstraightquote \mathord
    \@@_make_mathactive:nNN {`\`} \mathbacktick      \mathord
  }
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_make_mathactive:nNN}
% Makes |#1| a mathactive char, and gives cs |#2| the meaning of mathchar |#1|
% with class |#3|.
% You are responsible for giving active |#1| a particular meaning!
%    \begin{macrocode}
\cs_new:Nn \@@_make_mathactive_parse:nNN
  {
    \@@_if_char_spec:nNT {#1} #3
      { \@@_make_mathactive_noparse:nNN {#1} #2 #3 }
  }
%    \end{macrocode}
%
%    \begin{macrocode}
\cs_new:Nn \@@_make_mathactive_noparse:nNN
  {
    \@@_set_mathchar:NNnn #2 #3 {\l_@@_symfont_label_tl} {#1}
    \@@_char_gmake_mathactive:n {#1}
  }
%    \end{macrocode}
% \end{macro}
%
%
% \subsection{Delimiter codes}
%
% \begin{macro}{\@@_assign_delcode:nn}
%    \begin{macrocode}
\cs_new:Nn \@@_assign_delcode_noparse:nn
  {
    \@@_set_delcode:nnn \l_@@_symfont_label_tl {#1} {#2}
  }
%    \end{macrocode}
%
%    \begin{macrocode}
\cs_new:Nn \@@_assign_delcode_parse:nn
  {
    \@@_if_char_spec:nNT {#2} \@nil
      {
        \@@_assign_delcode_noparse:nn {#1} {#2}
      }
  }
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_assign_delcode:n}
% Shorthand.
%    \begin{macrocode}
\cs_new:Nn \@@_assign_delcode:n { \@@_assign_delcode:nn {#1} {#1} }
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_setup_delcodes:}
% Some symbols that aren't mathopen/mathclose still need to have delimiter codes assigned.
% The list of vertical arrows may be incomplete.
% On the other hand, many fonts won't support them all being stretchy.
% And some of them are probably not meant to stretch, either. But adding them here doesn't hurt.
%    \begin{macrocode}
\@@_cs_new:Nn \@@_setup_delcodes:
  {
    \@@_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
    \@@_assign_delcode:n {"005C} % backslash
    \@@_assign_delcode:nn {`\<} {"27E8} % angle brackets with ascii notation
    \@@_assign_delcode:nn {`\>} {"27E9} % angle brackets with ascii notation
    \@@_assign_delcode:n {"2191} % up arrow
    \@@_assign_delcode:n {"2193} % down arrow
    \@@_assign_delcode:n {"2195} % updown arrow
    \@@_assign_delcode:n {"219F} % up arrow twohead
    \@@_assign_delcode:n {"21A1} % down arrow twohead
    \@@_assign_delcode:n {"21A5} % up arrow from bar
    \@@_assign_delcode:n {"21A7} % down arrow from bar
    \@@_assign_delcode:n {"21A8} % updown arrow from bar
    \@@_assign_delcode:n {"21BE} % up harpoon right
    \@@_assign_delcode:n {"21BF} % up harpoon left
    \@@_assign_delcode:n {"21C2} % down harpoon right
    \@@_assign_delcode:n {"21C3} % down harpoon left
    \@@_assign_delcode:n {"21C5} % arrows up down
    \@@_assign_delcode:n {"21F5} % arrows down up
    \@@_assign_delcode:n {"21C8} % arrows up up
    \@@_assign_delcode:n {"21CA} % arrows down down
    \@@_assign_delcode:n {"21D1} % double up arrow
    \@@_assign_delcode:n {"21D3} % double down arrow
    \@@_assign_delcode:n {"21D5} % double updown arrow
    \@@_assign_delcode:n {"21DE} % up arrow double stroke
    \@@_assign_delcode:n {"21DF} % down arrow double stroke
    \@@_assign_delcode:n {"21E1} % up arrow dashed
    \@@_assign_delcode:n {"21E3} % down arrow dashed
    \@@_assign_delcode:n {"21E7} % up white arrow
    \@@_assign_delcode:n {"21E9} % down white arrow
    \@@_assign_delcode:n {"21EA} % up white arrow from bar
    \@@_assign_delcode:n {"21F3} % updown white arrow
  }
%    \end{macrocode}
% \end{macro}
%
% \subsection{(Big) operators}
%
% The engine does what is necessary to deal with big operators for us
% automatically with \cmd\Umathchardef.
% However, the limits aren't set automatically; that is, we want to define,
% a la Plain \TeX\ \etc, |\def\int{\intop\nolimits}|, so there needs to be a
% transformation from \cmd\int\ to \cmd\intop\ during the expansion of
% \cmd\_@@_sym:nnn\ in the appropriate contexts.
%
% \begin{macro}{\l_@@_nolimits_tl}
% This macro is a sequence containing those maths operators that require a
% \cmd\nolimits\ suffix.
% This list is used when processing |unicode-math-table.tex| to define such
% commands automatically (see the macro \cs{@@_set_mathsymbol:nNNn}).
% I've chosen essentially just the operators that look like integrals;
% hopefully a better mathematician can help me out here.
% I've a feeling that it's more useful \emph{not} to include the multiple
% integrals such as $\iiiint$, but that might be a matter of preference.
%    \begin{macrocode}
\tl_set:Nn \l_@@_nolimits_tl
  {
    \int\iint\iiint\iiiint\oint\oiint\oiiint
    \intclockwise\varointclockwise\ointctrclockwise\sumint
    \intbar\intBar\fint\cirfnint\awint\rppolint
    \scpolint\npolint\pointint\sqint\intlarhk\intx
    \intcap\intcup\upint\lowint
  }
%    \end{macrocode}
% \end{macro}
%
% \subsection{Radicals}
%
% \begin{macro}{\l_@@_radicals_tl}
% The radicals are organised in \cs{@@_set_mathsymbol:nNNn}.
% We organise radicals in the same way as nolimits-operators.
% (\cs{cuberoot} and \cs{fourthroot}, don't seem to behave as proper radicals.)
%    \begin{macrocode}
\tl_set:Nn \l_@@_radicals_tl {\sqrt \longdivision \cuberoot \fourthroot}
%    \end{macrocode}
% \end{macro}
%
% \subsection{Fontdimens}
%
%    \begin{macrocode}
%<*LU>
%    \end{macrocode}
%
% \begin{macro}{\@@_mathparam_restore:}
% \cs{glb@settings} might not be necessary but is included for symmetry.
% If the maths font were to be loaded later it would clobber our mathparam settings, so
% this seems like a sensible move.
%    \begin{macrocode}
\@@_cs_new:Nn \@@_mathparam_restore:
  {
    \glb@settings
    \tl_use:N \g_@@_mathparam_settings_tl
  }
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\@@_mathparam_store:}
% \cs{glb@settings} is called to force maths fonts loading \emph{now} so the mathparams
% are up-to-date.
%    \begin{macrocode}
\@@_cs_new:Nn \@@_mathparam_store:
  {
    \glb@settings
    \tl_gset:Nx \g_@@_mathparam_settings_tl
      {
        \@@_mathparam_store_aux:N \displaystyle
        \@@_mathparam_store_aux:N \textstyle
        \@@_mathparam_store_aux:N \scriptstyle
        \@@_mathparam_store_aux:N \scriptscriptstyle
      }
  }
%    \end{macrocode}
%
%    \begin{macrocode}
\cs_set:Nn \@@_mathparam_store_aux:N
  {
    \Umathquad                #1 = \the \Umathquad                #1 \scan_stop:
    \Umathaxis                #1 = \the \Umathaxis                #1 \scan_stop:
    \Umathoperatorsize        #1 = \the \Umathoperatorsize        #1 \scan_stop:
    \Umathoverbarkern         #1 = \the \Umathoverbarkern         #1 \scan_stop:
    \Umathoverbarrule         #1 = \the \Umathoverbarrule         #1 \scan_stop:
    \Umathoverbarvgap         #1 = \the \Umathoverbarvgap         #1 \scan_stop:
    \Umathunderbarkern        #1 = \the \Umathunderbarkern        #1 \scan_stop:
    \Umathunderbarrule        #1 = \the \Umathunderbarrule        #1 \scan_stop:
    \Umathunderbarvgap        #1 = \the \Umathunderbarvgap        #1 \scan_stop:
    \Umathradicalkern         #1 = \the \Umathradicalkern         #1 \scan_stop:
    \Umathradicalrule         #1 = \the \Umathradicalrule         #1 \scan_stop:
    \Umathradicalvgap         #1 = \the \Umathradicalvgap         #1 \scan_stop:
    \Umathradicaldegreebefore #1 = \the \Umathradicaldegreebefore #1 \scan_stop:
    \Umathradicaldegreeafter  #1 = \the \Umathradicaldegreeafter  #1 \scan_stop:
    \Umathradicaldegreeraise  #1 = \the \Umathradicaldegreeraise  #1 \scan_stop:
    \Umathstackvgap           #1 = \the \Umathstackvgap           #1 \scan_stop:
    \Umathstacknumup          #1 = \the \Umathstacknumup          #1 \scan_stop:
    \Umathstackdenomdown      #1 = \the \Umathstackdenomdown      #1 \scan_stop:
    \Umathfractionrule        #1 = \the \Umathfractionrule        #1 \scan_stop:
    \Umathfractionnumvgap     #1 = \the \Umathfractionnumvgap     #1 \scan_stop:
    \Umathfractionnumup       #1 = \the \Umathfractionnumup       #1 \scan_stop:
    \Umathfractiondenomvgap   #1 = \the \Umathfractiondenomvgap   #1 \scan_stop:
    \Umathfractiondenomdown   #1 = \the \Umathfractiondenomdown   #1 \scan_stop:
    \Umathfractiondelsize     #1 = \the \Umathfractiondelsize     #1 \scan_stop:
    \Umathlimitabovevgap      #1 = \the \Umathlimitabovevgap      #1 \scan_stop:
    \Umathlimitabovebgap      #1 = \the \Umathlimitabovebgap      #1 \scan_stop:
    \Umathlimitabovekern      #1 = \the \Umathlimitabovekern      #1 \scan_stop:
    \Umathlimitbelowvgap      #1 = \the \Umathlimitbelowvgap      #1 \scan_stop:
    \Umathlimitbelowbgap      #1 = \the \Umathlimitbelowbgap      #1 \scan_stop:
    \Umathlimitbelowkern      #1 = \the \Umathlimitbelowkern      #1 \scan_stop:
    \Umathoverdelimitervgap   #1 = \the \Umathoverdelimitervgap   #1 \scan_stop:
    \Umathoverdelimiterbgap   #1 = \the \Umathoverdelimiterbgap   #1 \scan_stop:
    \Umathunderdelimitervgap  #1 = \the \Umathunderdelimitervgap  #1 \scan_stop:
    \Umathunderdelimiterbgap  #1 = \the \Umathunderdelimiterbgap  #1 \scan_stop:
    \Umathsubshiftdrop        #1 = \the \Umathsubshiftdrop        #1 \scan_stop:
    \Umathsubshiftdown        #1 = \the \Umathsubshiftdown        #1 \scan_stop:
    \Umathsupshiftdrop        #1 = \the \Umathsupshiftdrop        #1 \scan_stop:
    \Umathsupshiftup          #1 = \the \Umathsupshiftup          #1 \scan_stop:
    \Umathsubsupshiftdown     #1 = \the \Umathsubsupshiftdown     #1 \scan_stop:
    \Umathsubtopmax           #1 = \the \Umathsubtopmax           #1 \scan_stop:
    \Umathsupbottommin        #1 = \the \Umathsupbottommin        #1 \scan_stop:
    \Umathsupsubbottommax     #1 = \the \Umathsupsubbottommax     #1 \scan_stop:
    \Umathsubsupvgap          #1 = \the \Umathsubsupvgap          #1 \scan_stop:
    \Umathspaceafterscript    #1 = \the \Umathspaceafterscript    #1 \scan_stop:
    \Umathconnectoroverlapmin #1 = \the \Umathconnectoroverlapmin #1 \scan_stop:
  }
%    \end{macrocode}
% \end{macro}
%
%    \begin{macrocode}
%</LU>
%    \end{macrocode}
%
%    \begin{macrocode}
%</package>
%    \end{macrocode}

\endinput

% /©
%
% ------------------------------------------------
% The UNICODE-MATH package  <wspr.io/unicode-math>
% ------------------------------------------------
% 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/>.
% ------------------------------------------------
% Copyright 2006-2019  Will Robertson, LPPL "maintainer"
% Copyright 2010-2017  Philipp Stephani
% Copyright 2011-2017  Joseph Wright
% Copyright 2012-2015  Khaled Hosny
% ------------------------------------------------
%
% ©/