aliases:
 space=          @"0020;
 ethchar=        @"1200-@"135f;
 ethspace=       @"1360;
 ethpunctuation= @"1361-@"1368;
 ethnum=         @"1369-@"137c;

expressions:
 {space} {ethpunctuation} => <= \$;
 {ethpunctuation} {space} => <= \1;
 {ethpunctuation} => "\nobreak\ethglue{}" \1 "\allowbreak\ethglue{}";