Exceptions

Current working location does not exist anymore.
Process return code: 4

You can encounter these errors if you run Perun2 using its command-line interface. They are caused by improper or missing arguments.
Process return code: 3

Syntax errors arise when source code cannot be interpreted properly. Detected unevitable runtime errors also throw syntax errors. Syntax errors exit the Perun2 process before any command has been executed.
Process return code: 2

A new runtime error can be called artificially by the command error.
Process return code: 1

Command exceptions include failures of core commands. They result, among others, from a permission denial, a filesystem path colisions or an absence of file system elements. Perun2 expects them and they are harmless to its process. The only result is omission of certain command and an exception message written in log.