RCSMERGE(1) USER COMMANDS RCSMERGE(1)
rcsmerge - merge RCS revisions
rcsmerge [options] file
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 oth
ers denote working files. Names are paired as explained in
At least one revision must be specified with one of the
options described 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 symbolically.
rcsmerge prints a warning if there are overlaps, and delim
its the overlapping regions as explained in merge(1). The
command is useful for incorporating changes into a checked-
-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
These options specify conflict styles that generate
less information than -A. See diff3(1) for details.
The default is -E. With -e, rcsmerge does not warn
Use subst style keyword substitution. See co(1) for
details. For example, -kk -r1.1 -r1.2 ignores differ
ences in keyword values 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.
Send the result to standard output instead of overwrit
ing the working file.
Run quietly; do not print diagnostics.
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 compati
bility with other RCS commands.
-V Print RCS's version number.
-Vn Emulate RCS version n. See co(1) for details.
Use suffixes to characterize RCS files. See ci(1) for
Use zone as the time zone for keyword substitution.
See co(1) for details.
Suppose you have released revision 2.8 of f.c. Assume fur
thermore 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 updates to 2.8 in the RCS file, check them in as revi
sion 184.108.40.206 and execute co -j:
ci -r220.127.116.11 f.c
co -r3.4 -j2.8:18.104.22.168 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 over
options prepended to the argument list, separated by
spaces. See ci(1) for details.
Exit status is 0 for no overlaps, 1 for some overlaps, 2 for
Author: Walter F. Tichy.
Manual Page Revision: 5.6; Release Date: 1995/06/01.
Copyright © 1982, 1988, 1989 Walter F. Tichy.
Copyright © 1990, 1991, 1992, 1993, 1994, 1995 Paul Eggert.
ci(1), co(1), ident(1), merge(1), rcs(1), rcsdiff(1), rcsin
tro(1), rlog(1), rcsfile(5)
Walter F. Tichy, RCS--A System for Version Control,
Software--Practice & Experience 15, 7 (July 1985), 637-654.
GNU Last change: 1995/06/01 1