rem: -j FIELD          (obsolescent) equivalent to `-1 FIELD -2 FIELD'\n\ -j1 FIELD         (obsolescent) equivalent to `-1 FIELD'\n\ -j2 FIELD         (obsolescent) equivalent to `-2 FIELD'\n\
add: -j FIELD          equivalent to `-1 FIELD -2 FIELD'\n\
context: usage (int status){  if (status != 0)    fprintf (stderr, _("Try `%s --help' for more information.\n"),	     program_name);  else    {      printf (_("\Usage: %s [OPTION]... FILE1 FILE2\n\"),	      program_name);      fputs (_("\For each pair of input lines with identical join fields, write a line to\n\standard output.  The default join field is the first, delimited\n\by whitespace.  When FILE1 or FILE2 (not both) is -, read standard input.\n\\n\  -a FILENUM        print unpairable lines coming from file FILENUM, where\n\                      FILENUM is 1 or 2, corresponding to FILE1 or FILE2\n\  -e EMPTY          replace missing input fields with EMPTY\n\"), stdout);      fputs (_("\  -i, --ignore-case ignore differences in case when comparing fields\n\  -j FIELD          (obsolescent) equivalent to `-1 FIELD -2 FIELD'\n\  -j1 FIELD         (obsolescent) equivalent to `-1 FIELD'\n\  -j2 FIELD         (obsolescent) equivalent to `-2 FIELD'\n\  -o FORMAT         obey FORMAT while constructing output line\n\  -t CHAR           use CHAR as input and output field separator\n\"), stdout);      fputs (_("\  -v FILENUM        like -a FILENUM, but suppress joined output lines\n\  -1 FIELD          join on this FIELD of file 1\n\  -2 FIELD          join on this FIELD of file 2\n\"), stdout);      fputs (HELP_OPTION_DESCRIPTION, stdout);      fputs (VERSION_OPTION_DESCRIPTION, stdout);      fputs (_("\\n\Unless -t CHAR is given, leading blanks separate fields and are ignored,\n\else fields are separated by CHAR.  Any FIELD is a field number counted\n\from 1.  FORMAT is one or more comma or blank separated specifications,\n\each being `FILENUM.FIELD' or `0'.  Default FORMAT outputs the join field,\n\the remaining fields from FILE1, the remaining fields from FILE2, all\n\separated by CHAR.\n\"), stdout);      printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);    }  exit (status == 0 ? EXIT_SUCCESS : EXIT_FAILURE);}