gdiffmk
mark differences between groff/nroff/troff files
see also :
groff - nroff - diff
Synopsis
gdiffmk
[ -aaddmark ]
[ -cchangemark ]
[ -ddeletemark ]
[ -D [ -B ]
[ -Mmark1 mark2 ] ]
[ -xdiffcmd ]
[ -- ]
[ --help ]
[ --version ] file1
file2 [ output ]
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description
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.
options
-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.
copyright
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/>.
bugs
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[:at:]gnu[:dot:]org. Include a complete, self-contained
example that will allow the bug to be reproduced, and say
which version of gdiffmk you are using.
see also
groff ,
nroff , gtroff, diff
authors
This document
was written and is maintained by
Mike Bianchi (mailto:MBianchi[:at:]Foveal[:dot:]com).
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 (http://www.gnu.org/copyleft/fdl.html).
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).