Don't test en-us-mathtext.yaml because that is not the table we are i…

…nterested in

We don't even know what this table is used for and how it is supposed
to behave.

The table we are actually interested in is nemeth.ctb. We can't test
it directly in Liblouis however because it is not part of
Liblouis (anymore). It is part of Liblouistdml. The solution is to
test nemethdefs.cti for now and add a note that we should change this
to nemeth.ctb (which requires that we move the table back to Liblouis,
see liblouis#815).

Also revert the changes in en-us-mathtext.ctb.

tables/en-us-mathtext.ctb

@@ -22,8 +22,9 @@
 # liblouis  comes with ABSOLUTELY NO WARRANTY.
 
 # Maintained by John J. Boyer, [email protected], www.chpi.org
-include nemethdefs.cti
+
 include en-chardefs.cti All character definition opcodes
+include nemethdefs.cti
 
 # Braille indicators
 numsign 3456  number sign, just a dots operand

tests/Makefile.am

@@ -132,7 +132,6 @@ dist_braille_specs_TESTS =				  \
 	braille-specs/en-us-emphasis_harness.yaml	  \
 	braille-specs/en-us-g2.yaml			  \
 	braille-specs/en-us-g2-dictionary_harness.yaml	  \
-	braille-specs/en-us-mathtext.yaml			  \
 	braille-specs/eo-g1_harness.yaml		  \
 	braille-specs/es-comp.yaml			  \
 	braille-specs/es-g2.yaml			  \
@@ -175,6 +174,7 @@ dist_braille_specs_TESTS =				  \
 	braille-specs/ml.yaml				  \
 	braille-specs/mn-MN_harness.yaml		  \
 	braille-specs/ms-my-g2.yaml			  \
+	braille-specs/nemeth.yaml			  \
 	braille-specs/nl-comp8_harness.yaml		  \
 	braille-specs/nl-g0_harness.yaml		  \
 	braille-specs/no_8dot_harness.yaml		  \

tests/braille-specs/Makefile.am

@@ -61,7 +61,6 @@ EXTRA_DIST =					\
 	en-us-comp8-ext-for_harness.yaml	\
 	en-us-g2.yaml				\
 	en-us-g2-dictionary_harness.yaml	\
-	en-us-mathtext.yaml			  \
 	eo-g1_harness.yaml			\
 	es-comp.yaml				\
 	es-g2.yaml				\
@@ -105,6 +104,7 @@ EXTRA_DIST =					\
 	ml.yaml					\
 	mn-MN_harness.yaml			\
 	ms-my-g2.yaml				\
+	nemeth.yaml				\
 	nl-comp8_harness.yaml			\
 	nl-g0_harness.yaml			\
 	no_8dot_harness.yaml			\

tests/braille-specs/nemeth.yaml

@@ -0,0 +1,158 @@
+# Test file for nemethdefs.cti, based on:
+# 1. Official Nemeth braille specification (1972 revision): https://nfb.org/images/nfb/documents/pdf/nemeth_1972.pdf
+# 2. Unicode Nemeth braille symbols collection: https://devblogs.microsoft.com/math-in-office/unicode-math-braille-sequences/
+# 3. Arrows related NFB tutorial lesson: https://nfb.org/sites/www.nfb.org/files/files-pdf/braille-certification/lesson-10--provisional-5-9-20.pdf
+
+# FIXME: This test should be changed so that it tests a top-level
+# table (i.e. a table that can be discovered based on metadata). For
+# instance, the table could be nemeth.ctb, and the test would document
+# the math symbols as well as the "semantic" characters used for the
+# linearization of MathML (see also
+# https://github.com/liblouis/liblouis/issues/815).
+
+# Copyright © 2023 Attila Hammer from IT Foundation for the Visually Impaired - Hungary <www.infoalap.hu>
+#
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved. This file is offered as-is,
+# without any warranty.
+
+display: |
+  include unicode.dis
+  display \x00A0 a
+table: |
+  include nemethdefs.cti
+  include en-chardefs.cti
+  letsign 56
+  capsletter 6
+flags: {testmode: forward}
+
+tests:
+  - ["^", ⠸⠣]
+  - [\x00ac, ⠈⠹]
+  - [\x2213, ⠤⠬]
+  - [\x27e6, ⠈⠸⠷]
+  - [\x27e7, ⠈⠸⠾]
+  - [\x2983, ⠨⠸⠷]
+  - [\x2984, ⠨⠸⠾]
+  - [\x2af4, ⠳⠳⠳]
+  - [\x02D9, ⠡]
+  - [\x2216, ⠸⠡]
+  - [\x27E8, ⠨⠨⠷]
+  - [\x27E9, ⠨⠨⠾]
+  - [\x0396, ⠨⠠⠵]
+  - [\x0397, ⠨⠠⠱]
+  - [\x03A4, ⠨⠠⠞]
+  - [\x03A8, ⠨⠠⠽]
+  - [\x03B6, ⠨⠵]
+  - [\x03B7, ⠨⠱]
+  - [\x03C2, ⠨⠒]
+  - [\x03C8, ⠨⠽]
+  - [\x03C9, ⠨⠺]
+  - [\x03D1, ⠨⠈⠹]
+  - [\x03D5, ⠨⠈⠋]
+  - [\x03D6, ⠨⠈⠏]
+  - [\x03F0, ⠨⠈⠅]
+  - [\x03F1, ⠨⠈⠗]
+  - [\x03F5, ⠨⠈⠑]
+  - [\x2015, ⠱]
+  - [\x2016, ⠳⠳]
+  - [\x2020, ⠸⠻]
+  - [\x2021, ⠸⠸⠻]
+  - [\x2030, ⠈⠴⠴]
+  - [\x2031, ⠈⠴⠴⠴]
+  - [\x2102, ⠈⠰⠠⠉]
+  - [\x2113, ⠰⠈⠇]
+  - [\x211D, ⠈⠰⠠⠗]
+  - [\x2147, ⠑]
+  - [\x2308, ⠈⠘⠷]
+  - [\x2309, ⠈⠘⠾]
+  - [\x230A, ⠈⠰⠷]
+  - [\x230B, ⠈⠰⠾]
+  - [\x22EE, ⠀⠩⠒⠒⠒⠀]
+  - [\x22EF, ⠀⠒⠒⠒⠀]
+  - [\x22F0, ⠀⠘⠒⠒⠒⠀]
+  - [\x22F1, ⠀⠰⠒⠒⠒⠀]
+  - [\x21AE,  ⠳⠈⠫⠪⠒⠒⠕⠻ ]
+  - [\x21CA,  ⠫⠩⠒⠒⠕⠐⠫⠩⠒⠒⠕ ]
+  - [\x21CB,  ⠫⠈⠪⠒⠒⠫⠒⠒⠈⠕ ]
+  - [\x21CC,  ⠫⠒⠒⠈⠕⠫⠈⠪⠒⠒ ]
+  - [\x21CD,  ⠳⠈⠫⠪⠶⠶⠻ ]
+  - [\x21CE,  ⠳⠈⠫⠪⠶⠶⠕⠻ ]
+  - [\x21CF,  ⠳⠈⠫⠶⠶⠕⠻ ]
+  - [\x21D0,  ⠫⠪⠶⠶ ]
+  - [\x21D1,  ⠫⠣⠶⠶⠕ ]
+  - [\x21d2,  ⠫⠶⠶⠕ ]
+  - [\x21D3,  ⠫⠣⠶⠶⠕ ]
+  - [\x21D4,  ⠫⠪⠶⠶⠕ ]
+  - [\x21D5,  ⠫⠣⠪⠶⠶⠕ ]
+  - [\x21D6,  ⠫⠘⠪⠶⠶ ]
+  - [\x21d7,  ⠫⠘⠶⠶⠕ ]
+  - [\x21D8,  ⠫⠰⠶⠶⠕ ]
+  - [\x21D9,  ⠫⠰⠪⠶⠶ ]
+  - [\x21DA,  ⠫⠪⠸⠸ ]
+  - [\x21DB,  ⠫⠸⠸⠕ ]
+  - [\x21F4,  ⠨⠡⠈⠫⠒⠒⠕⠻ ]
+  - [\x223C,  ⠈⠱ ]
+  - [\x220B,  ⠈⠢ ]
+  - [\x220C,  ⠌⠈⠢ ]
+  - [\x2227, ⠈⠩]
+  - [\x2228, ⠈⠬]
+  - [\x2260,  ⠌⠨⠅ ]
+  - [\x2261,  ⠸⠇ ]
+  - [\x2262,  ⠌⠸⠇ ]
+  - [\x203E, ⠱]
+  - [\x2044, ⠸⠌]
+  - [\x2215, ⠸⠌]
+  - [\x2124, ⠈⠰⠠⠵]
+  - [\x23de, ⠨⠷]
+  - [\x23DF, ⠨⠾]
+  - [\x2208,  ⠈⠑ ]
+  - [\x2209,  ⠌⠈⠑ ]
+  - [\x2245,  ⠈⠱⠨⠅ ]
+  - [\x2248,  ⠈⠱⠈⠱ ]
+  - [\x22D8,  ⠐⠅⠈⠐⠅⠈⠐⠅⠻ ]
+  - [\x22d9,  ⠨⠂⠈⠨⠂⠈⠨⠂⠻ ]
+  - [\x226A,  ⠐⠅⠈⠐⠅⠻ ]
+  - [\x226B,  ⠨⠂⠈⠨⠂⠻ ]
+  - [\x226E,  ⠌⠐⠅ ]
+  - [\x2282,  ⠸⠐⠅ ]
+  - [\x2283,  ⠸⠨⠂ ]
+  - [\x2284,  ⠌⠸⠐⠅ ]
+  - [\x2285,  ⠌⠸⠨⠂ ]
+  - [\x2286,  ⠸⠐⠅⠱ ]
+  - [\x2287,  ⠸⠨⠂⠱ ]
+  - [\x2288,  ⠌⠸⠐⠅⠱ ]
+  - [\x2289,  ⠌⠸⠨⠂⠱ ]
+  - [\x228A,  ⠸⠐⠅⠌⠨⠅ ]
+  - [\x228B,  ⠸⠨⠂⠌⠨⠅ ]
+  - [\x23E2, ⠫⠵]
+  - [\x25B2, ⠫⠸⠞]
+  - [\x25B3, ⠫⠞]
+  - [\x25B5, ⠫⠞]
+  - [\x25cb, ⠫⠉]
+  - [\x25CF, ⠫⠸⠉]
+  - [\x25A0, ⠫⠸⠲]
+  - [\x25A1, ⠫⠲]
+  - [\x25AC, ⠫⠸⠗]
+  - [\x25AD, ⠫⠗]
+  - [\x25b0, ⠫⠸⠛]
+  - [\x25B1, ⠫⠛]
+  - [\x25B2, ⠫⠸⠞]
+  - [\x25EF, ⠫⠉]
+  - [\x2221, ⠫⠪⠈⠫⠁⠻]
+  - [\x2222, ⠫⠪⠸⠫⠫⠁⠻]
+  - [\x2223,  ⠳ ]
+  - [\x2224,  ⠌⠳ ]
+  - [\x22FE, ⠫⠸⠲]
+  - [\x221D,  ⠸⠿ ]
+  - [\x2237,  ⠰⠆ ]
+  - ["ő", ⠰⠈⠕]
+  - ["ű", ⠰⠈⠥]
+  - ["Ő", ⠰⠠⠈⠕]
+  - ["Ű", ⠰⠠⠈⠥]
+  - [\x00BE, ⠹⠒⠌⠲⠼]
+  - [\x00A5, ⠈⠽]
+  - [\x20A3, ⠈⠋]
+  - [\x20A6, ⠈⠝]
+  - [\x20AC, ⠈⠑]