Run nitrogen
with the -debug
flag. In this mode, breakpoint
statements in
a file will pause VM execution and start an interactive debugger prompt.
quit
: Exit the program.continue
: Continue execution until the end or the next breakpoint.step
: Execute the next instruction then break again.frame
: Print current frame information from VM.contwithinstrs
: Continue execution until the end of the script and print all instruction debug information.frames
: Print the current call frame stack.env
: Print all defined variables in the current scope.