This program can split apart, and recombine, MATLAB scripts written using the Cell Mode feature.
Cell Mode is highly convenient for interactive development. A large task can be split into separate chunks which are repeatedly run independently, inspecting local variables and making iterative changes. I often use Cell Mode to document the steps of a machine learning pipeline. But Cell Mode can't be used when operating MATLAB from the comand line (such as on a remote server). You can only run the whole script as a unit. But after processing with cellsplit, each cell is a whole script so the flexibility is regained.
Also, if you've ever tried to set dbstop if error and then run a cell, and watched your compiler slowly melt into a pile of jello, cellsplit can help. Since the "cells" are run as normal scripts, debugging and profiling work fine.
cellsplit contains a very rudimentary parser of MATLAB syntax, and it breaks out every cell into a new script. It also breaks out bodies of conditionals and loops, since cells can be placed inside those.
Unsupported features of MATLAB:
switch- (please file a bug if there is one I've overlooked)