How do I change character encoding in Matlab_R2015b (OS)?

I am writing a code in Matlab and sometimes I use letters such as ř,ě,š,č etc. in the code. Those letters appear as question marks once I close and reopen Matlab. My Mac is set to use Czech alphabet and Czech language. How do I fix this issue? Thank you in advance.

[Walter Roberson]

Which operating system are you using ?

[Katerina Kocendova]

macOS High Sierra 10.13.3

Answer 1

[Walter Roberson]

You could try following the steps described in https://www.mathworks.com/help/matlab/release-notes.html?rntext=unicode&startrelease=R2016a&endrelease=R2016a&groupby=release&sortby=descending&searchHighlight=unicode in the "Internationalization" section. But note that description is for R2016a and I do not know if the underlying support was present in R2015b.

[Katerina Kocendova]

Do you think that upgrading to Matlab 2017 could help?