RCSMERGE(1) 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 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. Revi-sions Revisions
sions 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.
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 information 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 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.
-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 unre-leased unreleased
leased 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 revision 2.8.1.1 and execute 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: 1.1; Release Date: 1999/04/23.
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 1999/04/23 RCSMERGE(1)
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