GDIFFMK(1) manual page
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gdiffmk - mark differences between groff/nroff/troff files
[ -a ] [ -c ] [ -d ] [ -D [ -B ] [ -M ] ] [ -x ] [ -- ] [ --help ] [ --version ]
file1 file2 [ output ]
gdiffmk compares two groff(1)
, nroff(1)
, or troff(1)
documents,
file1 and file2, and creates an output which is file2 with added ‘margin
character’ (.mc) commands that indicate the differences.
If the output filename
is present, the output is written there. If it is - or absent the output
is written to the standard output.
If the file1 or file2 argument is - the
standard input is read for that input. Clearly both cannot be -.
Note that
the output is not necessarily compatible with all macro packages and all
preprocessors. See the BUGS section below.
- -aaddmark
- Use the addmark
for source lines not in file1 but present in file2. Default: +.
- -B
- By default,
the deleted texts marked by the -D option end with an added troff break
command, .br, to ensure that the deletions are marked properly. This is the
only way to guarantee that deletions and small changes get flagged. This
option directs the program not to insert these breaks; it makes no sense
to use it without -D.
- -cchangemark
- Use the changemark for changed source
lines. Default: |.
- -ddeletemark
- Use the deletemark for deleted source lines.
Default: *.
- -D
- Show the deleted portions from changed and deleted text. Default
delimiting marks: [[ .... ]].
- -Mmark1 mark2
- Change the delimiting marks for
the -D option. It makes no sense to use this option without -D.
- -xdiffcmd
- Use
the diffcmd command to perform the comparison of file1 and file2. In particular,
diffcmd should accept the GNU diff -Dname option. Default: diff(1)
.
- --
- All
the following arguments are treated as file names, even if they begin with
-.
- --help
- Print a usage message on standard error output and exit.
- --version
- Print version information on the standard output and exit.
The output
is not necessarily compatible with all macro packages and all preprocessors.
A workaround that is often successful against preprocessor problems is
to run gdiffmk on the output of all the preprocessors instead of the input
source.
gdiffmk relies on the -Dname option of GNU diff(1)
to make a merged
‘#ifdef’ output format. It hasn’t been tested whether other versions of diff(1)
do support this option. See also the -xdiffcmd option.
Report bugs to bug-groff@gnu.org.
Include a complete, self-contained example that will allow the bug to be
reproduced, and say which version of gdiffmk you are using.
This
document was written and is maintained by Mike Bianchi
This document
is distributed under the terms of the FDL (GNU Free Documentation License)
version 1.1 or later. You should have received a copy of the FDL on your
system, it is also available on-line at the GNU copyleft site
gdiffmk
is part of the groff GNU free software project. All parts of the groff package
are protected by GNU copyleft licenses. The software files are distributed
under the terms of the GNU General Public License (GPL), while the documentation
files mostly use the GNU Free Documentation License (FDL).
Copyright
© 2004, 2005, 2008 Free Software Foundation, Inc.
gdiffmk is free software;
you can redistribute it and/or modify it under the terms of the GNU General
Public License as published by the Free Software Foundation, either version
3 of the License, or (at your option) any later version.
gdiffmk is distributed
in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received
a copy of the GNU General Public License along with this program. If not,
see <http://www.gnu.org/licenses/
>.
groff(1)
, nroff(1)
, gtroff(1)
,
diff(1)
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