Landon Curt Noll
d414b6d71f
Improved `all-run.sh` and `readme2index.sh` so that certain command line options (e.g., -p, -P, -u, -U ...) are only passed along to other tools if they are given on the command line. all-run.sh VERSION changed from "1.1.1 2024-01-19" to "1.1.2 2024-01-20", readme2index.sh VERSION changed from "1.1 2024-01-16" to "1.1.1 2024-01-20". Added `quick-readme2index.sh` that only calls `readme2index.sh` if the `index.html` is not a non-empty file, or of either `.winner.json` and/or `README.md` is newer than `index.html`. Updated all `index.html` files because the the file contains a comment that includes the newly modified readme2index.sh VERSION.
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
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<title>1991/ant</title>
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<meta name="description" content="1991 IOCCC winner ant">
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<meta name="keywords" content="IOCCC, 1991, IOCCC 1991, IOCCC winner, ant">
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<div class="header">
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<img src="/temp-test-ioccc/png/ioccc.png" alt="IOCCC image by Matt Zucker" width=300 height=110>
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<h1>The International Obfuscated C Code Contest</h1>
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<h2>1991/ant</h2>
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<div class="topnav">
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<a class="Left Disabled" href="#">first entry</a>
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<a class="Left" href="../index.html">↑ 1991 ↑</a>
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<a class="Left" href="../brnstnd/index.html">brnstnd →</a>
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<a class="Right" href="#inventory">Inventory</a>
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<a href="#content">Jump to contents</a>
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<div class="sidenav">
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<a href="/temp-test-ioccc/index.html">IOCCC Home</a>
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<a href="/temp-test-ioccc/years.html">Winning Entries</a>
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<a href="/temp-test-ioccc/winners.html">People who have won</a>
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<div class="sidenav">
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<a href="/temp-test-ioccc/news.html">IOCCC News</a>
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<a href="/temp-test-ioccc/faq.html#submit">How to enter the IOCCC</a>
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<a href="/temp-test-ioccc/faq.html">FAQ</a>
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<div class="sidenav">
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<a href="/temp-test-ioccc/bugs.html">Bugs & (mis)features</a>
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<a href="/temp-test-ioccc/faq.html#fix_a_winner">Fixing IOCCC winners</a>
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<a href="/temp-test-ioccc/faq.html#fix_web_site">Fixing the web site</a>
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<a href="/temp-test-ioccc/faq.html#fix_author">Fixing winner info</a>
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<a href="/temp-test-ioccc/thanks-for-help.html">Thanks for the help</a>
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<hr>
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<div class="sidenav">
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<a href="/temp-test-ioccc/judges.html">The IOCCC Judges</a>
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<a href="/temp-test-ioccc/contact.html">Contacting the IOCCC</a>
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</div>
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<hr>
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<a href="#top">Jump to top</a>
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<a name="content"></a>
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<p><a name="author"><strong>Author:</strong></a> <br><br>Name: <a
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href="/temp-test-ioccc/winners.html#Anthony_C_Howe">Anthony C.
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Howe</a><br> Location: <a
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href="/temp-test-ioccc/location.html#CA">CA</a></p>
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<h2 id="to-build">To build:</h2>
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<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> all</span></code></pre></div>
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<p>There is an <a href="#alternate-code">alternate version</a> that
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might feel a bit more familiar to vi(m) users.</p>
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<h2 id="to-use">To use:</h2>
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<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./ant</span> some_file</span></code></pre></div>
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<p>NOTE: the file must already exist and not specifying any arg will
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make the program exit without doing anything.</p>
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<h2 id="try">Try:</h2>
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<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> hill</span>
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<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./ant</span> hill</span></code></pre></div>
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<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> mole</span>
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<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./ant</span> mole</span></code></pre></div>
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<h2 id="alternate-code">Alternate code:</h2>
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<p>This version changes the commands slightly so that to go to the first
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column you should enter <code>0</code>, to go to the last column you
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should enter <code>$</code>, to quit you should enter <code>q</code>, to
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go back a word you should enter <code>b</code> and to go forwards a word
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you should enter <code>w</code>. Also, and perhaps most useful, rather
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than having to hit ctrl-L (form-feed, <code>\f</code>) to get back to
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command mode you can use the usual ESC (<code>\x1b</code>).</p>
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<p>These will make it slightly less unwieldy for those familiar with
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vi(m); the rest was unchanged.</p>
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<h3 id="alternate-build">Alternate build:</h3>
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<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> alt</span></code></pre></div>
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<h3 id="alternate-use">Alternate use:</h3>
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<p>Use <code>ant.alt</code> as you would <code>ant</code> above with the
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changes in the input keys. See the author’s remarks for the remaining
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keys.</p>
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<h2 id="judges-remarks">Judges’ remarks:</h2>
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<p>The author was kind enough to supply a list of references below, in
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case you are still confused after read the source! :-)</p>
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<p>BTW: you’ve most likely heard the joke that if you want a
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pseudo-random string of characters you can put a user unfamiliar with
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vi(m) in a vi(m) session (in insert mode) and ask them to exit. Well in
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this case you’re likely to have this problem if you ARE a vi(m) user!
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:-) … especially if you don’t read the information below. This means if
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you’re reading this in vi(m) you’ll have to exit this like in normal
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vi(m) and then try the same with <code>./ant</code> only to fail.
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:-)</p>
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<p>NOTE: to enter form feed you should be able to hit
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<code>ctrl-L</code>. This will allow you to exit insert mode rather than
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ESC like in normal vi(m). See the author’s commands section for other
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commands.</p>
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<h2 id="authors-remarks">Author’s remarks:</h2>
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<p>Ant’s Editor vIOCCC91</p>
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<p>Text files consists of lines of printable text or tab characters. A
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line can be of arbitrary length and is delimited by either a newline or
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the end of file. Carriage return is mapped to newline on input and
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ignored on output. Tab stops are every eight columns. Non-printable
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characters may have unpredictable results depending on the
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implementation of <code>curses</code>.</p>
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<h3 id="commands">Commands</h3>
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<ul>
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<li>h j k l left, down, up, right cursor movement</li>
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<li>H J K L word left, page down, page up, word right</li>
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<li><label><input type="checkbox" />beginning and end of
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line</label></li>
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<li>t b top and bottom of file</li>
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<li>i enter insert mode, form-feed to quit</li>
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<li>x delete character under the cursor</li>
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<li>W write buffer to file</li>
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<li>R refresh the screen</li>
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<li>Q quit</li>
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</ul>
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<h3 id="exit-status">Exit status</h3>
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<ul>
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<li>0 success</li>
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<li>2 missing edit filename</li>
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</ul>
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<h3 id="about-this-entry">About this entry</h3>
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<p>The <code>BUF</code> size should be set at compile time to 32767.
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This value was used because the Sozobon C compiler for the Atari ST has
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16 bit ints and a limit on the size of arrays & structures of 32k.
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Also the WatCom C compiler for the PC also has 16 bits ints. On machines
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that have 32 bit ints (most unix boxes), a larger value for
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<code>BUF</code> could be used.</p>
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<p>It is recommend that compact memory model be used on PC class
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machines. Small memory model may work too provided <code>BUF</code> is
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not too large.</p>
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<p>The character constants <code>'\b'</code>, <code>'\f'</code>,
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<code>'\n'</code>, <code>'\r'</code>, <code>'\t'</code> are used in
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order to provide more portable code, since the compiler should handle
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the translation of them into the native character set. Note that
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<code>'\f'</code> (form-feed) was used to exit insert mode because
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K&R C had no escape constant for the escape-key.</p>
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<p>My goals for this project were to learn and experiment with the
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Buffer Gap Scheme [Fin80][net90], write a useful and <em>portable</em>
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program, and meet the requirements of the IOCCC. I initially planned to
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have a mini <code>curses</code> built-in like the <a
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href="/1989/tromp/README.md">IOCCC Tetris entry from a previous
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year</a>, however this was not as portable as using a
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<code>curses</code> library with
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<code>TERMINFO</code>/<code>TERMCAP</code> support.</p>
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<p>I plan to post follow-ups such as unobfuscated versions and bugs
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fixes to comp.editors. Reposts of the editor.101, gap.doc, and
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editor.102 can be found in the same group every so often.</p>
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<p>This entry will display a file with long lines, but has trouble
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scrolling the screen with long lines. Paging up and down should work
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correctly, however.</p>
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<h3 id="references">References:</h3>
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<p>[Fin80] Craig A. Finseth, “Theory and Practice of Text Editors
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or<br />
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A Cookbook For An EMACS”, TM-165, MIT Lab. for Computer<br />
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Science</p>
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<p>[KeP81] Kernighan & Plauger, “Software Tools in Pascal”,<br />
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Addison-Wesley, 81, chapter 6</p>
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<p>[Mil86] Eugene W. Myers & Webb Miller, “Row-replacement
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Algorithms for Screen Editors”, TR 86-19, Dept. of Computer
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Science,<br />
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U. of Arizona</p>
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<p>[MyM86] Eugene W. Myers & Webb Miller, “A simple
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row-replacement<br />
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method”, TR 86-28, Dept. of Computer Science, U. of Arizona</p>
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<p>[Mil87] Webb Miller, “A Software Tools Sampler”, Prentice Hall, 87
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ISBN 0-13-822305-X, chapter 5</p>
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<p>[net90] “Editor 101/102” articles from comp.editors</p>
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<h2 id="copyright-and-cc-by-sa-4.0-license">Copyright and CC BY-SA 4.0
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License:</h2>
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<p>This file is Copyright (c) 2023 by Landon Curt Noll. All Rights
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Reserved. You are free to share and adapt this file under the terms of
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this license:</p>
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<pre><code>Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)</code></pre>
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<p>For more information, see:
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https://creativecommons.org/licenses/by-sa/4.0/</p>
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<h1 id="inventory-for-1991ant"><a name="inventory"></a>Inventory for
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1991/ant</h1>
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<h2 id="primary-files">Primary files</h2>
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<ul>
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<li><a href="index.html">index.html</a> - winner home page</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.c">ant.c</a>
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- winning source</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/Makefile">Makefile</a>
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- winner Makefile</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.alt.c">ant.alt.c</a>
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- alternative source</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.orig.c">ant.orig.c</a>
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- original source</li>
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<li><a href="1991_ant.tar.bz2">1991_ant.tar.bz2</a> - download winning
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source</li>
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</ul>
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<h2 id="secondary-files">Secondary files</h2>
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<ul>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/.gitignore">.gitignore</a>
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- list of files that should not be committed under git</li>
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<li><a href=".path">.path</a> - directory path from top directory</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/.winner.json">.winner.json</a>
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- description of winner in JSON</li>
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<li><a
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href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/README.md">README.md</a>
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- markdown source for index.html</li>
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</ul>
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<div class="footer">
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<hr>
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<h2>Coda</h2>
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<p><a href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1991%2Fant%2Findex.html">Nu HTML check this web page</a></p>
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<p><a href="#top">Jump to top</a> <a href="#content">Jump to Content</a> <a href="#inventory">Jump to Inventory</a></p>
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