isempty(sweepVar) is never true (it is scalar string), thus no warning is issued

[benjaminkraus]

If I put my cursor on line 4 of this file:

a = 1;
x = linspace(0,4*pi,1000);
y = a.*sin(x);
plot(x,y);

The function ConnectButtonPushed calls splitCode which outputs a scalar string object called sweepVar. Because it is always a scalar string object, isempty(sweepVar) is never true, so the code assumes it found valid line of code and does not issue the expected warning.

[gulley]

Thanks for opening this issue and doing some detective work besides. Mixing char arrays and strings is bad practice. Fixed it.