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
-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
-kk -r1.1 -r1.2 ignores differences in keyword values when comparing revisions
1.2. To avoid excess output from locker name substitution,
-kkvl is assumed if (1) at most one revision option is given,
-k option is given, (3)
-kkv is the default keyword substitution, and
(4) the working files mode would be produced by
co -l. See
-z. Otherwise, all options of
that apply to regular files are accepted, with the same meaning as for
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.
rev1 is given, but
rev2 is omitted,
rcsdiff compares revision
rev1 of the RCS file with
the contents of the corresponding working file.
rev2 are given,
rcsdiff compares revisions
rev2 of the RCS file.
rev2 may be given numerically or symbolically.