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<title>lepton-schdiff</title>
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<h1 align="center">lepton-schdiff</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#EXAMPLES">EXAMPLES</a><br>
<a href="#BUGS">BUGS</a><br>
<a href="#AUTHOR">AUTHOR</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
<a href="#COPYRIGHT">COPYRIGHT</a><br>
<hr>
<h2>NAME
<a name="NAME"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><b>lepton-schdiff</b>
- Graphical diff tool for schematics</p>
<h2>SYNOPSIS
<a name="SYNOPSIS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><b>lepton-schdiff</b>
<i>[-d VIEWER] infile1.sch infile2.sch</i></p>
<h2>DESCRIPTION
<a name="DESCRIPTION"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">The
<b>lepton-schdiff</b> program will use <b>ImageMagick(1)</b>
to display a graphical diff of two schematic files.
It’s most useful when combined with a revision control
system so it can compare two revisions of the same file,
review changes, etc. However, it is limited in that it can
only compare two files at a time; it cannot diff entire
directories nor can it diff an entire revision (unless that
revision affected only one file).</p>
<p style="margin-left:11%; margin-top: 1em"><i>VIEWER</i>
command, if specified, will be used to display the result.
By default, it’s <b>display</b> program from the
ImageMagick package.</p>
<p style="margin-left:11%; margin-top: 1em"><b>lepton-schdiff</b>
can easily be configured to work with most revision control
systems. Here are instructions for three:</p>
<p style="margin-left:11%; margin-top: 1em"><b>git:</b> Use
the <b>difftool</b> command exactly as you would use
<b>diff</b> , but supply the <b>-x lepton-schdiff</b>
option.</p>
<p style="margin-left:11%; margin-top: 1em"><b>mercurial:</b>
Use the <b>lepton-schdiff</b> command exactly as you would
use <b>diff</b> , but add the following lines to your
.hgrc:</p>
<p style="margin-left:22%; margin-top: 1em">[extensions]
<br>
hgext.extdiff = <br>
[extdiff] <br>
cmd.schdiff = lepton-schdiff</p>
<p style="margin-left:11%; margin-top: 1em"><b>subversion:</b>
Use the <b>diff</b> command like normal, but supply the
<b>--diff-cmd lepton-schdiff</b> option.</p>
<p style="margin-left:11%; margin-top: 1em"><b>Note:</b> To
make lepton-schdiff work properly, all page contents should
be enclosed in some form of bounding box (e.g. a title
block), otherwise the symbols in exported images could have
different relative positions and/or sizes, resulting in a
difference image that is rather hard to comprehend.</p>
<h2>EXAMPLES
<a name="EXAMPLES"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">Use git to view
the changes to a file between two revisions</p>
<p style="margin-left:22%;">git difftool -x lepton-schdiff
182110f 039e012 cpu.sch</p>
<p style="margin-left:11%;">Use mercurial to see all the
changes since a specific revision</p>
<p style="margin-left:22%;">hg schdiff -r 8442880f9835
cpld.sch</p>
<p style="margin-left:11%;">Use subversion to review a
specific revision</p>
<p style="margin-left:22%;">svn diff --diff-cmd
lepton-schdiff -c 49 power.sch</p>
<h2>BUGS
<a name="BUGS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">If you find
one, please report it at
https://github.com/lepton-eda/lepton-eda/issues</p>
<h2>AUTHOR
<a name="AUTHOR"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">Alan Somers</p>
<h2>SEE ALSO
<a name="SEE ALSO"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><b>composite(1),
display(1), git(1), lepton-schematic(1), hg(1),
svn(1)</b></p>
<h2>COPYRIGHT
<a name="COPYRIGHT"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">Copyright
© 2011-2014 gEDA Contributors. <br>
Copyright © 2018-2022 Lepton EDA Contributors. <br>
License GPLv2+: GNU GPL version 2 or later. Please see the
’COPYING’ <br>
file included with this program for full details.</p>
<p style="margin-left:11%; margin-top: 1em">This is free
software: you are free to change and redistribute it. <br>
There is NO WARRANTY, to the extent permitted by law.</p>
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