improved indentation and whitespace for markdown code blocks

All code blocks in markdown have been intended by at least 4 spaces.

We add `--tab-stop=8` to all `pandoc(1)` executions in order to set
a better tab stop indentation, especially for tab intended code blocks.

Changed `bin/pandoc-wrapper.sh` VERSION from "1.5.3 2024-03-26"
to "1.6 2024-03-31".

Fixed `1991/brnstnd/sorta.README.md` so that the sorta code
is code blocks.

Removed unneeded paragraph group in copyright in `inc/footer.default.html`.

Fixed excess whitespace after list Author on entry `index.html` page.

Changed `bin/output-index-author.sh` VERSION from "1.5.2 2024-03-26"
to "1.6 2024-03-31".

Performed `make www` to perform the above and test under macOS.

TODO: Fix the problem of the initial line of code being extra intended.
TODO: Fix excess whitespace around code that is inline.

1986/marshall/README.md

@@ -1,7 +1,7 @@
 ## To build:
 
 ```sh
-make all
+    make all
 ```
 
 NOTE: we FORCE disable the optimiser due to a funny problem with different
@@ -19,7 +19,7 @@ if nothing else.
 ## To use:
 
 ```sh
-./marshall
+    ./marshall
 ```
 
 
@@ -37,14 +37,14 @@ To see if your compiler has the problems noted:
 
 
 ```sh
-make alt
+    make alt
 ```
 
 
 ### Alternate use:
 
 ```sh
-./marshall.alt
+    ./marshall.alt
 ```
 
 Does it work in your system? That is does it not segfault, does it print it only

1986/marshall/compilers.html

@@ -162,7 +162,7 @@ because of the call to <code>_exit()</code> (see below).</p>
 enable the optimiser clang will generate code that prints the string twice and
 dumps core just like before! What about the call to <code>_exit()</code>?</p>
 <p>The call was:</p>
-<div class="sourceCode" id="cb1"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a>_exit<span class="op">(</span>argv<span class="op">[(</span><span class="dt">int</span><span class="op">)*</span>argc<span class="op">-</span><span class="dv">2</span><span class="op">/</span>cc<span class="op">[</span><span class="dv">1</span><span class="op">*(</span><span class="dt">int</span><span class="op">)*</span>argc<span class="op">]|-</span><span class="dv">1</span><span class="op">&lt;&lt;</span><span class="dv">4</span><span class="op">]);</span></span></code></pre></div>
+<div class="sourceCode" id="cb1"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a>    _exit<span class="op">(</span>argv<span class="op">[(</span><span class="dt">int</span><span class="op">)*</span>argc<span class="op">-</span><span class="dv">2</span><span class="op">/</span>cc<span class="op">[</span><span class="dv">1</span><span class="op">*(</span><span class="dt">int</span><span class="op">)*</span>argc<span class="op">]|-</span><span class="dv">1</span><span class="op">&lt;&lt;</span><span class="dv">4</span><span class="op">]);</span></span></code></pre></div>
 <p>Changing it to not refer to these variables and just exit 1 and the problems
 disappear!</p>
 <h3 id="macos">macOS</h3>
@@ -172,9 +172,9 @@ it works fine but if it’s disabled it prints out the string and then enters an
 infinite loop!</p>
 <p>After we fix the infinite loop if we change the <code>_exit()</code> call in macOS and
 disable the optimiser we might get something like:</p>
-<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">$</span> ./marshall</span>
-<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a>      <span class="ex">choo</span> choo</span>
-<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a><span class="ex">Segmentation</span> fault: 11</span></code></pre></div>
+<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a>    <span class="ex">$</span> ./marshall</span>
+<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a>          <span class="ex">choo</span> choo</span>
+<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a>    <span class="ex">Segmentation</span> fault: 11</span></code></pre></div>
 <p>Observe how it doesn’t print it twice. But of course it segfaults so it’s not
 right either.</p>
 <p>If the optimiser is enabled, however, we will see that it works fine before the

1986/marshall/compilers.md

@@ -55,7 +55,7 @@ The call was:
 
 
 ```c
-_exit(argv[(int)*argc-2/cc[1*(int)*argc]|-1<<4]);
+    _exit(argv[(int)*argc-2/cc[1*(int)*argc]|-1<<4]);
 ```
 
 Changing it to not refer to these variables and just exit 1 and the problems
@@ -73,9 +73,9 @@ After we fix the infinite loop if we change the `_exit()` call in macOS and
 disable the optimiser we might get something like:
 
 ```sh
-$ ./marshall
-      choo choo
-Segmentation fault: 11
+    $ ./marshall
+	  choo choo
+    Segmentation fault: 11
 ```
 
 Observe how it doesn't print it twice. But of course it segfaults so it's not

1986/marshall/index.html

@@ -132,8 +132,7 @@
 <h2 id="author"><a name="author"></a>Author:</h2>
 <ul>
 <li>Name: <a href="../../authors.html#Eric_Marshall">Eric Marshall</a><br>
-Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)
-<br><br></li>
+Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
 </ul>
 
 <!-- END: next line ends content generated by: bin/output-index-author.sh -->
@@ -142,7 +141,7 @@ 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>
+<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>
 <p>NOTE: we FORCE disable the optimiser due to a funny problem with different
 compilers and systems. See below and <a href="compilers.html">compilers.html</a> for details.</p>
 <p>There is an <a href="#alternate-code">alternate version</a>. The reason is a funny problem:
@@ -153,7 +152,7 @@ might work but the other one would not. We describe this in more detail in
 <a href="compilers.html">compilers.html</a> and we encourage you to read it for entertainment
 if nothing else.</p>
 <h2 id="to-use">To use:</h2>
-<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">./marshall</span></span></code></pre></div>
+<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">./marshall</span></span></code></pre></div>
 <h2 id="alternate-code">Alternate code:</h2>
 <p>Due to the different <a href="compilers.html">conflicting problems</a> with gcc and clang, we
 instead offer the problematic code as an alternate version whereas
@@ -161,9 +160,9 @@ instead offer the problematic code as an alternate version whereas
 <code>_exit()</code> commented out, changing the value passed into <code>_exit()</code> to <code>1</code>.</p>
 <h3 id="alternate-build">Alternate build:</h3>
 <p>To see if your compiler has the problems noted:</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="fu">make</span> alt</span></code></pre></div>
+<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> alt</span></code></pre></div>
 <h3 id="alternate-use">Alternate use:</h3>
-<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="ex">./marshall.alt</span></span></code></pre></div>
+<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="ex">./marshall.alt</span></span></code></pre></div>
 <p>Does it work in your system? That is does it not segfault, does it print it only
 once and does it not enter an infinite loop? Or more generally does it print the
 text exactly once and then exit?</p>