Add MATLAB syntax test file

cc sharkdp/bat#1213

tests/syntax-tests/source/MATLAB/test.matlab

@@ -0,0 +1,34 @@
+function zz=sample(aa)
+%%%%%%%%%%%%%%%%%%
+% some comments
+%%%%%%%%%%%%%%%%%%
+
+x = 'a string';    % some 'ticks' in a comment
+y = 'a string with ''interal'' quotes';
+
+for i=1:20
+  disp(i);
+end
+
+a = rand(30);
+b = rand(30);
+
+c = a .* b ./ a \ ... comment at end of line and continuation
+    (b .* a + b - a);
+
+c = a' * b';  % note: these ticks are for transpose, not quotes.
+
+disp('a comment symbol, %, in a string');
+
+!echo abc % this isn't a comment - it's passed to system command
+
+function y=myfunc(x)
+y = exp(x);
+
+%{
+  a block comment
+%}
+
+function no_arg_func
+fprintf('%s\n', 'function with no args')
+end