Automatically generate functions from snippet of a script

Hello,

When I write a code in matlab, I usually start writing a script. When the script gets bigger, I transform it into a function and I start splitting it into sub-functions.

I wonder if there is an automatic way to transform a snippet of code into a function. What I mean is just generating the header with input. Matlab is already able to recognize variables that are declared in a function and variables that are not. Provided the output of a function, all the variables that are not declared should be automatically written in the header input.

I don't know if something like this exists, but it would be a huge saving of time!

Alessandro.