MATLAB thinks my entire script is commented, no idea why.

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After coming back from holiday MATLAB can't seem to be able to open my script. Every line appears to be commented out, even though there's no comment '%' indicators (single line or paragraph). Atatched is a screenshot of my problem. This only happens for this particular script, or any saved copies (such as saving script.m to scriptV2.m, etc...). Running the code does nothing.
I can't copy and paste any of the code except into a new script file within MATLAB, but it preserves this strange comment behaviour. So I can't copy it to a .txt file, then back. Nor can I copy it here to show you - when I try, it just copies a single % symbol.
I've tried saving my file as a .txt, then opening it, but when it saves it puts spaces between each letter, like "T H I S", meaning I can't use the code or paste it back into matlab.
I can write new, working code at the bottom, if I create enough new lines. But I can't edit, use or recover any of the existing code.
Can anyone help? I've also attached a deleted version of the code (as the main script contains sensitive infiormation/data) - if anyone can get it working or knows a fix, I'd be most grateful, or I'll have to re-type the entire document...

Accepted Answer

Cris LaPierre
Cris LaPierre on 22 Sep 2022
Edited: Cris LaPierre on 22 Sep 2022
How was this file created? When I open the attached file in MATLAB, there are a lot more spaces between each letter.
When I open it in a text editor, I see those spaces are NUL characters.
If I remove the null characters, it is no longer treated as a comment. To do this, I highlighted the first character in line one, pressed Ctrl + H to open Find and Replaace, and made sure Replace was empty (delete anything there, including a space), and then clicked Replace All.
Final result
  4 Comments
Adam Danz
Adam Danz on 23 Sep 2022
You could remove the additional line breaks programmatically, too. I don't have the file open now but I believe the line breaks can be identified using char(10) in my second line of code. You can identify which lines of code contain only a line break character and then remove those lines.

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