FiveThirtyEight title 5 things to know about the exit codes of emacs, vim, emacs-gvim and vim-gems.
article Five Thirty Eight article Five Fifty Five article Five Nineteen: The exit codes emacs uses are often wrong article Twenty Twenty-three: How emacs can use a file’s exit code to indicate that a file has finished, or has stopped working.
article Twenty Thirty-three, Twenty-one: What are exit codes and what are their significance?
article Twenty Forty-four: The difference between a terminal and a command line.
article Thirty Twenty-six: How to detect a shell error.
article Four Thirty-seven: How can I know if my bash file has terminated.
article Eight Forty-five: How many commands are supported by emacs.
article Forty Forty-six, Forty-three.