How do I add semi-colons to lines of MATLAB code automatically in MATLAB?

I want to add semi-colons to multiple lines of MATLAB code automatically.

Answer 1

[MathWorks Support Team]

Starting in MATLAB R2021b, the MATLAB Editor as well as the Live Editor support column selection, code autocompletion and refactoring. Please refer to Edit and Format Code - MATLAB & Simulink for more details. 

For MATLAB Releases prior to R2021b there is no direct, built-in way to globally control the placement of semi-colons in MATLAB files. You will have to write custom scripts to do that. See attached function called "fixSemiColon()" which calls "readLineOfFile()" and "replaceFileLine()" and shows a way of doing this.

[Matt J]

The link, properly URL-ed,

https://www.mathworks.com/help/matlab/matlab_prog/edit-and-format-code.html

Answer 2

[Matt J]

You can use favoriteForceSemicolons.m from this File Exchange download,

https://www.mathworks.com/matlabcentral/fileexchange/181000-customized-text-modification-buttons-for-the-matlab-editor

to add semicolons to highlighted regions of code (or select the entire document). It is easiest if you install it as a Quick Access button, as recommended in the Desciption section of the submission.

There is also a button definition favoriteStripSemicolons.m for stripping away semicolons, which can also be useful.