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RCSMERGE(1)		    General Commands Manual		   RCSMERGE(1)

NAME
       rcsmerge	- merge	RCS revisions

SYNOPSIS
       rcsmerge	[options] file

DESCRIPTION
       rcsmerge	 incorporates the changes between two revisions	of an RCS file
       into the	corresponding working file.

       Pathnames matching an RCS suffix	denote RCS files;  all	others	denote
       working files.  Names are paired	as explained in	ci(1).

       At  least  one  revision	 must be specified with	one of the options de-
       scribed below, usually -r.  At most two revisions may be	specified.  If
       only one	revision is specified, the  latest  revision  on  the  default
       branch  (normally  the  highest branch on the trunk) is assumed for the
       second revision.	 Revisions may be specified  numerically  or  symboli-
       cally.

       rcsmerge	prints a warning if there are overlaps,	and delimits the over-
       lapping	regions	 as  explained in merge(1).  The command is useful for
       incorporating changes into a checked-out	revision.

OPTIONS
       -A     Output conflicts using the -A style of diff3(1), if supported by
	      diff3.  This merges all changes leading from file2 to file3 into
	      file1, and generates the most verbose output.

       -E, -e These options specify conflict styles that generate less	infor-
	      mation  than  -A.	 See diff3(1) for details.  The	default	is -E.
	      With -e, rcsmerge	does not warn about conflicts.

       -ksubst
	      Use subst	style keyword substitution.  See  co(1)	 for  details.
	      For example, -kk -r1.1 -r1.2 ignores differences in keyword val-
	      ues  when	merging	the changes from 1.1 to	1.2.  It normally does
	      not make sense to	merge binary files as if they  were  text,  so
	      rcsmerge refuses to merge	files if -kb expansion is used.

       -p[rev]
	      Send  the	 result	 to standard output instead of overwriting the
	      working file.

       -q[rev]
	      Run quietly; do not print	diagnostics.

       -r[rev]
	      Merge with respect to revision rev.  Here	an  empty  rev	stands
	      for  the	latest	revision  on  the default branch, normally the
	      head.

       -T     This option has no effect; it is present for compatibility  with
	      other RCS	commands.

       -V     Print RCS's version number.

       -Vn    Emulate RCS version n.  See co(1)	for details.

       -xsuffixes
	      Use suffixes to characterize RCS files.  See ci(1) for details.

       -zzone Use  zone	 as the	time zone for keyword substitution.  See co(1)
	      for details.

EXAMPLES
       Suppose you have	released revision 2.8 of f.c.  Assume furthermore that
       after you complete an unreleased	revision 3.4, you receive  updates  to
       release	2.8 from someone else.	To combine the updates to 2.8 and your
       changes between 2.8 and 3.4, put	the updates to 2.8 into	file  f.c  and
       execute

	   rcsmerge  -p	 -r2.8	-r3.4  f.c  >f.merged.c

       Then  examine  f.merged.c.   Alternatively, if you want to save the up-
       dates to	2.8 in the RCS file, check them	in as revision 2.8.1.1 and ex-
       ecute co	-j:

	   ci  -r2.8.1.1  f.c
	   co  -r3.4  -j2.8:2.8.1.1  f.c

       As another example, the following command undoes	 the  changes  between
       revision	2.4 and	2.8 in your currently checked out revision in f.c.

	   rcsmerge  -r2.8  -r2.4  f.c

       Note the	order of the arguments,	and that f.c will be overwritten.

ENVIRONMENT
       RCSINIT
	      options  prepended  to  the  argument list, separated by spaces.
	      See ci(1)	for details.

DIAGNOSTICS
       Exit status is 0	for no overlaps, 1 for some overlaps, 2	for trouble.

IDENTIFICATION
       Author: Walter F. Tichy.
       Manual Page Revision: 5.6; Release Date:	1995/06/01.
       Copyright (C) 1982, 1988, 1989 Walter F.	Tichy.
       Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995	Paul Eggert.

SEE ALSO
       ci(1), co(1),  ident(1),	 merge(1),  rcs(1),  rcsdiff(1),  rcsintro(1),
       rlog(1),	rcsfile(5)
       Walter  F. Tichy, RCS--A	System for Version Control, Software--Practice
       & Experience 15,	7 (July	1985), 637-654.

GNU				  1995/06/01			   RCSMERGE(1)

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