- "\t\tThe output format is plain-text, with all text-content\n"
- "\t\tMIME parts decoded. Various components in the output,\n"
- "\t\t('message', 'header', 'body', 'attachment', and MIME 'part')\n"
- "\t\tare delimited by easily-parsed markers. Each marker consists\n"
- "\t\tof a Control-L character (ASCII decimal 12), the name of\n"
- "\t\tthe marker, and then either an opening or closing brace,\n"
- "\t\t'{' or '}' to either open or close the component.\n"
+ "\t\t--format=(json|text)\n"
+ "\n"
+ "\t\t\ttext\t(default)\n"
+ "\n"
+ "\t\t\tThe plain-text has all text-content MIME parts decoded.\n"
+ "\t\t\tVarious components in the output, ('message', 'header',\n"
+ "\t\t\t'body', 'attachment', and MIME 'part') are delimited by\n"
+ "\t\t\teasily-parsed markers. Each marker consists of a Control-L\n"
+ "\t\t\tcharacter (ASCII decimal 12), the name of the marker, and\n"
+ "\t\t\tthen either an opening or closing brace, '{' or '}' to\n"
+ "\t\t\teither open or close the component.\n"
+ "\n"
+ "\t\t\tjson\n"
+ "\n"
+ "\t\t\tFormat output as Javascript Object Notation (JSON).\n"
+ "\t\t\tJSON output always includes all messages in a matching,\n"
+ "\t\t\tthread i.e. '--output=json' implies '--entire-thread'\n"