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Program exiting gracefully on input


I'd like to write a program where the user can type something at any of several entry prompts and have the program close neatly. What comes to my mind is using xpcall() to call a main loop function, having the code throw up a 'done now' error() whenever it gets the 'quit' input, and have xpcall()'s message handler check for that error and handle it with a 'okay, see you' message, with debug.traceback() being called if any other errors pop out. Is there a better way?


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i do the same, aye...


tho, for purely personal "purity" reasons, i try to not use the global namespace unless there's no other way, so in that sort of pattern i'd use



  local running = run()

until not running


or a similar construct. 

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