Lint all MATLAB files recursively

lint.m

% This code lints all the .m files under working directory recursively
files = ls("./**/*.m");
files = strsplit(string(files))';

% First gather all errors
msgs = {};
for i = 1:length(files(1:end-1)) 
    msgs{i} = checkcode(files{i},'-string');
    if ~isempty(msgs{i})
        msgs{i} = append(files{i},':',newline, msgs{i});
    end
end

% Then report all at once if there are any
for i = 1:length(files(1:end-1)) 
    if ~isempty(msgs{i})
        error(strjoin(msgs,'\n'))
    end
end