add hack-a-round for language specified markdown code blocks

When language is specified in a markdown code block such as:

````
```c
    printf("Hello, world!\n");
```
````

is used, the resulting HTML as produced by `pandoc(1)` combined
with our revised `ioccc.css` is not intent the code block well.

A temporary "_hack-a-round_" is to turn the "markdown code language
specifier" into an HTML comment.  For example:

````
```<!---c-->
    printf("Hello, world!\n");
```
````

This commits turns off existing markdown code language specifiers
for now, while preserving our ability to restore them in the future
when a better  "_hack-a-round_" to the "markdown code language
specifier" problem is found.

The HTML impact if this "_hack-a-round_" is to produce HTML that
looks like this:

```
<pre class="&lt;!---c--&gt;"><code> .. </code></pre>
```

We might be able to create a complex set of classes for each markdown
code language (there won't be very many) in `ioccc.css`, or we might
find a more general CSS (or maybe `pandoc(1)`?) solution.

For now, this hack-a-round will have to do.

1989/westley/index.html

@@ -141,24 +141,24 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
 <!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
 
 <h2 id="to-build">To build:</h2>
-<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>
+<pre class="&lt;!---sh--&gt;"><code>    make all</code></pre>
 <h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
 <p>The current status of this entry is:</p>
 <pre><code>    STATUS: known bug - please help us fix</code></pre>
 <p>For more detailed information see <a href="../../bugs.html#1989_westley">1989 westley bugs</a>.</p>
 <h2 id="try">Try:</h2>
 <p>Try compiling and running the 4 resulting programs like:</p>
-<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="ex">./compile.sh</span></span></code></pre></div>
+<pre class="&lt;!---sh--&gt;"><code>    ./compile.sh</code></pre>
 <p>If you need to specify an alternate compiler path, say because your default
 compiler is clang (or in the case of macOS gcc is clang) you can do so like:</p>
-<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="va">CC</span><span class="op">=</span>/opt/local/bin/gcc-mp-12 <span class="ex">./compile.sh</span></span></code></pre></div>
+<pre class="&lt;!---sh--&gt;"><code>    CC=/opt/local/bin/gcc-mp-12 ./compile.sh</code></pre>
 <p>If you wish to delay the script or remove the delay you can do so like:</p>
-<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="va">DELAY</span><span class="op">=</span>2 <span class="ex">./compile.sh</span></span></code></pre></div>
+<pre class="&lt;!---sh--&gt;"><code>    DELAY=2 ./compile.sh</code></pre>
 <p>Finally try:</p>
-<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a>    <span class="ex">./westley</span></span>
-<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a>    <span class="co"># input some lines of text, sending EOF (usually ctrl-d) to end</span></span>
-<span id="cb6-3"><a href="#cb6-3" aria-hidden="true" tabindex="-1"></a></span>
-<span id="cb6-4"><a href="#cb6-4" aria-hidden="true" tabindex="-1"></a>    <span class="ex">./try.sh</span> <span class="co"># demo of some input</span></span></code></pre></div>
+<pre class="&lt;!---sh--&gt;"><code>    ./westley
+    # input some lines of text, sending EOF (usually ctrl-d) to end
+
+    ./try.sh # demo of some input</code></pre>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p>There is a secret way to get ONE of the versions to print out
 “<code>Hello, world!\n</code>”. Can you find how to do it?</p>
@@ -175,7 +175,7 @@ different algorithm for each version (hereafter referred to as
 (ROT13 and reversed)).</p>
 <p>When compiling these versions, one needs to define <code>trgpune</code>
 in the compile line (which the Makefile now has). Example:</p>
-<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a>    <span class="fu">cc</span> <span class="at">-Dtrgpune</span><span class="op">=</span>putchar ver3.c <span class="at">-o</span> ver3</span></code></pre></div>
+<pre class="&lt;!---sh--&gt;"><code>    cc -Dtrgpune=putchar ver3.c -o ver3</code></pre>
 <p><code>trgpune</code> is the ROT13 of <code>getchar()</code>, so <code>getchar()</code> and <code>putchar()</code>
 are exchanged in the ROT13 counterpart. It is easy to see that
 this is unavoidable. I must have a <code>#define</code> for a library
@@ -207,14 +207,14 @@ first argument (argc) must be at least one).</p>
 function <code>vs()</code> to define in the ROT13 version. But a function
 called <code>vs()</code> turns into a function called <code>if()</code> in the original,
 so it can’t be done. Therefore, I do:</p>
-<div class="sourceCode" id="cb8"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a>    expr1 <span class="op">&amp;&amp;</span> expr2 <span class="op">&amp;&amp;</span> <span class="op">(</span>expr3<span class="op">=</span>etc<span class="op">);</span></span></code></pre></div>
+<pre class="&lt;!---c--&gt;"><code>    expr1 &amp;&amp; expr2 &amp;&amp; (expr3=etc);</code></pre>
 <p>which is the same as:</p>
-<div class="sourceCode" id="cb9"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a>    <span class="cf">if</span> <span class="op">(</span>expr1 <span class="op">&amp;&amp;</span> expr2<span class="op">)</span> expr3<span class="op">=</span>etc<span class="op">;</span></span></code></pre></div>
+<pre class="&lt;!---c--&gt;"><code>    if (expr1 &amp;&amp; expr2) expr3=etc;</code></pre>
 <p>A/UX on the Macintosh doesn’t get this right; it evaluates ALL
 expressions if they aren’t in an assignment or conditional
 statement. This might warrant a warning, since other compilers
 may do this. I found MANY compilers botched:</p>
-<div class="sourceCode" id="cb10"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a>    expr1 <span class="op">&amp;&amp;</span> <span class="op">(</span>expr2<span class="op">,</span>expr3<span class="op">);</span></span></code></pre></div>
+<pre class="&lt;!---c--&gt;"><code>    expr1 &amp;&amp; (expr2,expr3);</code></pre>
 <p><code>expr2</code> was OFTEN evaluated even if <code>expr1</code> was false. I removed
 such statements to make it more portable.</p>
 <h3 id="variable-names-worth-noting">Variable names worth noting</h3>
@@ -224,11 +224,11 @@ such statements to make it more portable.</p>
 <p><code>tang</code> and <code>gnat</code> are both ROT13 and palindrome pairs!</p>
 <p>–</p>
 <p>Normally (!), a reversible C program is done thus:</p>
-<div class="sourceCode" id="cb11"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a>    <span class="co">/**/</span> forward code <span class="co">/*/ edoc drawkcab /**/</span></span></code></pre></div>
+<pre class="&lt;!---c--&gt;"><code>    /**/ forward code /*/ edoc drawkcab /**/</code></pre>
 <p>If your compiler nests comments, it will get this wrong.
 However, I have made some bits of the code palindromic,
 (or different, but reversible) so it is more like:</p>
-<div class="sourceCode" id="cb12"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a>    <span class="co">/**/</span>forward<span class="co">/*//**/</span> palindromic <span class="co">/**//*/drawkcab/**/</span></span></code></pre></div>
+<pre class="&lt;!---c--&gt;"><code>    /**/forward/*//**/ palindromic /**//*/drawkcab/**/</code></pre>
 <p>The code can therefore be interlaced. There are eight
 such palindromic bits. You can find them within the
 <code>/*//**/   /**//*/</code> pairs.</p>