is_mex_fun: validate args

Author: scivision

+stdlib/is_mex_fun.m

@@ -1,7 +1,12 @@
 %% IS_MEX_FUN detect if a function is loaded as MEX or plain .m
 
 function y = is_mex_fun(name)
-  y = endsWith(which(name), mexext());
+arguments
+  name {mustBeTextScalar}
+end
+
+y = endsWith(which(name), mexext());
+
 end
 
 %!testif 0

+stdlib/windows_shortname.m

@@ -33,4 +33,9 @@
 
 end
 
-%!testif 0
+%!test
+%! if ispc
+%! pkg load windows
+%! c = getenv('ProgramFiles');
+%! assert(strlength(windows_shortname(c)) == 11)
+%! endif