merge --version (return code: 0)
merge (GNU RCS) 5.9.4
Copyright (C) 2010-2015 Thien-Thi Nguyen
Copyright (C) 1990-1995 Paul Eggert
Copyright (C) 1982,1988,1989 Walter F. Tichy, Purdue CS
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
merge --help (return code: 0)
Usage: merge [options] receiving-sibling parent other-sibling
Three-way file merge.
Options:
-A Use `diff3 -A' style.
-E Use `diff3 -E' style (default).
-e Use `diff3 -e' style.
-p Write to stdout instead of overwriting RECEIVING-SIBLING.
-q Quiet mode; suppress conflict warnings.
-LLABEL (up to three times) Specify the conflict labels for
RECEIVING-SIBLING, PARENT and OTHER-SIBLING, respectively.
-V Obsolete; do not use.
Report bugs to: <bug-rcs@gnu.org>
RCS home page: <http://www.gnu.org/software/rcs/>
General help using GNU software: <http://www.gnu.org/gethelp/>