Is there a function that retrieves the filename of the current script?

Is there a way to, from a .m file, determine the filename (including directory path) of that .m file?

Answer 1

S = dbstack();
S(1).file

You might have to use the -completenames option.

Excellent, thank you.

Answer 2

   p = mfilename('fullpath')

mfilename() is right function to call. You can simply have this line in your .m file to get the file name.
P=mfilename;

mfilename does not include the extension, and thus cannot distinguish between .p and .m files.

mfilename without any option does not include the path as was specifically requested by the user.

I see. Thank you, Walter!