How to select a specific .m function when two exist?

Question

First, here the way i\'m calling the function :

eval([functionName \'(\'\'stringArg\'\')\']); % functionName = \'someStringForTheFunctionName\'

Answer 1

OK, so a messy answer, but it should do it. My test function was 'echo'

funcstr='echo'; % string representation of function

Fs=which('-all',funcstr);
for v=1:length(Fs)
    if (strcmp(Fs{v}(end-1:end),'.m')) % Don''t move built-ins, they will be shadowed anyway
        movefile(Fs{v},[Fs{v} '_BK']);
    end
end
for v=1:length(Fs)
    if (strcmp(Fs{v}(end-1:end),'.m')) 
        movefile([Fs{v} '_BK'],Fs{v});
    end
    try
        eval([funcstr '(''stringArg'')']);
        break;
    catch
        if (strcmp(Fs{v}(end-1:end),'.m'))
            movefile(Fs{v},[Fs{v} '_BK']);
        end
    end
end
for w=1:v
    if (strcmp(Fs{v}(end-1:end),'.m'))
       movefile([Fs{v} '_BK'],Fs{v});
    end
end