rcsdiff - compare RCS revisions
rcsdiff [ -ksubst ] [ -q ] [ -rrev1 [ -rrev2 ] ] [ -T ] [ -V[n] ] [
-xsuffixes ] [ -zzone ] [ diff options ] file ...
rcsdiff runs diff(1) to compare two revisions of each RCS file given.
Pathnames matching an RCS suffix denote RCS files; all others denote
working files. Names are paired as explained in ci(1).
The option -q suppresses diagnostic output. Zero, one, or two
revisions may be specified with -r. The option -ksubst affects
keyword substitution when extracting revisions, as described in co(1);
for example, -kk -r1.1 -r1.2 ignores differences in keyword values
when comparing revisions 1.1 and 1.2. To avoid excess output from
locker name substitution, -kkvl is assumed if (1) at most one revision
option is given, (2) no -k option is given, (3) -kkv is the default
keyword substitution, and (4) the working file's mode would be
produced by co -l. See co(1) for details about -T, -V, -x and -z.
Otherwise, all options of diff(1) that apply to regular files are
accepted, with the same meaning as for diff.
If both rev1 and rev2 are omitted, rcsdiff compares the latest
revision on the default branch (by default the trunk) with the
contents of the corresponding working file. This is useful for
determining what you changed since the last checkin.
If rev1 is given, but rev2 is omitted, rcsdiff compares revision rev1
of the RCS file with the contents of the corresponding working file.
If both rev1 and rev2 are given, rcsdiff compares revisions rev1 and
rev2 of the RCS file.
Both rev1 and rev2 may be given numerically or symbolically.
The command rcsdiff f.c compares the latest revision on the
default branch of the RCS file to the contents of the working file
options prepended to the argument list, separated by spaces. See
ci(1) for details.
Exit status is 0 for no differences during any comparison, 1 for some
differences, 2 for trouble.
Author: Walter F. Tichy.
Manual Page Revision: 1.3; Release Date: 1996/01/31.
Copyright c 1982, 1988, 1989 Walter F. Tichy.
Copyright c 1990, 1991, 1992, 1993 Paul Eggert.
ci(1), co(1), diff(1), ident(1), rcs(1), rcsintro(1), rcsmerge(1),
Walter F. Tichy, RCS--A System for Version Control, Software--Practice
& Experience 15, 7 (July 1985), 637-654.