How to parse m-files (in matlab)?

We have as part of the tool we develop with matlab an m-file that deals as parameter database.

parameter.A = 11; % rick coefficient
parameter.B = 12.3 % morty number
parameter.C11 = 14;

In some (modern) programming languages it's possible to parse code, so you could check by a program if (in this case) all parameter lines contain a comment (which should document it).

[Walter Roberson]

Do you need to deal with character vectors? WIth string objects? With continued lines? With "block comments" ? With implicit continuation because you are in the middle of a [ or { definition ?

... Or is every line certain to be very simple like you show?

If every line is certain to be very simple, regexp() can find lines easily, such as

regexp(S, '^[\n%]+$', 'match', 'lineanchors')

[Image Analyst]

Would any of your lines ever have a % in them that is NOT the start of a comment? Like in a format specifier string inside of a fprintf() for example?