gistfile1.txt

              -e      Exit  immediately  if  a pipeline (which may consist of a single simple command), a list, or a compound command (see SHELL GRAMMAR above), exits with a non-zero status.  The shell does
                      not exit if the command that fails is part of the command list immediately following a while or until keyword, part of the test following the if or elif reserved  words,  part  of  any
                      command  executed in a && or || list except the command following the final && or ||, any command in a pipeline but the last, or if the command's return value is being inverted with !.
                      If a compound command other than a subshell returns a non-zero status because a command failed while -e was being ignored, the shell does not exit.  A trap on ERR, if set, is  executed
                      before  the  shell  exits.   This option applies to the shell environment and each subshell environment separately (see COMMAND EXECUTION ENVIRONMENT above), and may cause subshells to
                      exit before executing all the commands in the subshell.

                      If a compound command or shell function executes in a context where -e is being ignored, none of the commands executed within the compound command or function body will be affected  by
                      the  -e  setting, even if -e is set and a command returns a failure status.  If a compound command or shell function sets -e while executing in a context where -e is ignored, that set‐
                      ting will not have any effect until the compound command or the command containing the function call completes.