.\" $OpenBSD: rcsdiff.1,v 1.21 2006/04/24 08:40:01 jmc Exp $ .\" .\" Copyright (c) 2005 Joris Vink .\" All rights reserved. .\" .\" Permission to use, copy, modify, and distribute this software for any .\" purpose with or without fee is hereby granted, provided that the above .\" copyright notice and this permission notice appear in all copies. .\" .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .Dd October 08, 2005 .Dt RCSDIFF 1 .Os .Sh NAME .Nm rcsdiff .Nd compare RCS revisions .Sh SYNOPSIS .Nm .Op Fl cnquV .Op Fl k Ns Ar mode .Op Fl r Ns Ar rev .Op Fl x Ns Ar suffixes .Op Fl z Ns Ar tz .Ar .Sh DESCRIPTION The .Nm program is used to compare revisions of RCS files, in much the same way as the .Xr diff 1 utility. Differences between two specific revisions can be requested, as well as differences between the current working file and the latest revision of the default branch. .Pp It is not possible to display differences between entire directories, or differences between more than two files. All diffs produced are in the standard diff format, unless the .Fl u option is specified, which produces unified diffs. .Pp .Nm also supports keyword substitution \(en see the .Xr rcs 1 man page for more information. .Pp The following options are supported: .Bl -tag -width Ds .It Fl c Produces a diff with three lines of context. See .Xr diff 1 for more information. .It Fl k Ns Ar mode Specify the keyword substitution mode. .It Fl n Produces a diff in the same format that is used in the RCS files. .It Fl r Ns Ar rev Produces a diff with respect to revision .Ar rev . This option should be specified twice to generate a diff between two specific revisions. If only one revision is specified, diffing is done between that revision and the latest revision of the default branch. .It Fl q Be quiet about reporting. .It Fl u Produces a unified diff with three lines of context. See .Xr diff 1 for more information. .It Fl V Print RCS's version number. .It Fl x Ns Ar suffixes Specifies the suffixes for RCS files. Suffixes should be separated by the .Sq / character. .It Fl z Ns Ar tz Specify the date output format. .El .Sh ENVIRONMENT .Bl -tag -width RCSINIT .It Ev RCSINIT If set, this variable should contain a list of space-delimited options that are prepended to the argument list. .It Ev TMPDIR When set, this variable specifies the directory where temporary files are to be created. The default is set to .Pa /tmp . .El .Sh EXAMPLES Compare the latest revision of the default branch with the content of working file .Pa foo.c : .Pp .Dl $ rcsdiff foo.c .Pp Compare revision 1.7 and 1.8 of file .Pa foo.c and ignore differences in keyword values: .Pp .Dl $ rcsdiff -kk -r1.7 -r1.8 foo.c .Sh SEE ALSO .Xr ci 1 , .Xr co 1 , .Xr diff 1 , .Xr ident 1 , .Xr rcs 1 , .Xr rcsclean 1 , .Xr rcsmerge 1 , .Xr rlog 1 .Sh STANDARDS The flag .Op Fl T has no effect and is provided for compatibility only.