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 others denote
working files. Names are paired as explained in ci(1).
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 delimits the
overlapping regions as explained in merge(1). The command is useful for
incorporating changes into a checked-out revision.
-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.
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 about conflicts.
Use subst style keyword substitution. See co(1) for details. For
example, -kk -r1.1 -r1.2 ignores differences 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 overwriting the
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 compatibility 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 details.
Use zone as the time zone for keyword substitution. See co(1) for
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
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 revision 126.96.36.199 and execute co
ci -r188.8.131.52 f.c
co -r3.4 -j2.8:184.108.40.206 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.
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 trouble.
Author: Walter F. Tichy.
Revision Number: 5.7; Release Date: 1998/01/12.
Copyright c 1982, 1988, 1989 by Walter F. Tichy.
Copyright c 1990, 1991, 1992, 1993, 1994, 1995 by Paul Eggert.
ci(1), co(1), ident(1), merge(1), rcs(1), rcsdiff(1), rcsintro(1),
rlog(1), rcsfile(4), RCSsource(5)
Walter F. Tichy, RCS--A System for Version Control, Software--Practice &
Experience 15, 7 (July 1985), 637-654.
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