convert markdown copyright TAB chars into SPACE chars

While not strictly necessary, replacing the two ASCII tab characters
in the markdown copyright comment makes it easier to detect problematic
TAB indentation within markdown files.

After this commit, only 90 markdown files have leading ASCII TAB
characters.  And again, while not strictly necessary, we can consider
running expand on those 90 markdown files to see what effect that
might have on the HTML files they produce.

Replace leading ASCII TAB characters with multiples of 8 ASCII SPACE
characters (the default action of the `expand(1)` tool) might have
an negative effect on some HTML formatting where **hack-a-round**
formatting was attempted to fix broken indentation caused by
problematic ASCII TAB characters.

Think of this as a baseline for evaluating leading
TAB characters within markdown files.

TODO: Consider either using `expand(1)` to replace leading ASCII
TAB characters with multiples of 8 ASCII SPACE characters AND/OR
modifying the appropriate `bin` tool to convert leading ASCII TAB
characters into multiples of 8 ASCII SPACE characters.

2000/README.md

@@ -100,10 +100,10 @@ See also [the IOCCC FAQ](../faq.html) for additional information on the IOCCC.
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/anderson/README.md

@@ -97,10 +97,10 @@ source file.
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/anderson/index.html

@@ -523,11 +523,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/bellard/README.md

@@ -41,10 +41,10 @@ system with a gcc compiler.
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/bellard/index.html

@@ -478,11 +478,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/bmeyer/README.md

@@ -352,10 +352,10 @@ en/decoded[^4].
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/bmeyer/index.html

@@ -716,11 +716,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/briddlebane/README.md

@@ -64,10 +64,10 @@ it.  One of the real mysteries involves the numbers `114` and
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/briddlebane/index.html

@@ -501,11 +501,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/dhyang/README.md

@@ -63,10 +63,10 @@ type (a source of compile warnings).
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/dhyang/index.html

@@ -494,11 +494,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/dlowe/README.md

@@ -297,10 +297,10 @@ DEC Tru64 5.0+, again according to the Perl people.
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/dlowe/index.html

@@ -659,11 +659,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/index.html

@@ -514,11 +514,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/jarijyrki/README.md

@@ -468,10 +468,10 @@ currently.
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/jarijyrki/index.html

@@ -715,11 +715,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/natori/README.md

@@ -104,10 +104,10 @@ into `acos(-l/2)`.
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/natori/index.html

@@ -512,11 +512,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/primenum/README.md

@@ -106,10 +106,10 @@ argument, otherwise the "bugs" in the program will cause it to crash!
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/primenum/index.html

@@ -525,11 +525,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/rince/README.md

@@ -367,10 +367,10 @@ Jean Meeus. Published by Willmann-Bell Inc.
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/rince/index.html

@@ -710,11 +710,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/robison/README.md

@@ -187,10 +187,10 @@ I claim, by letters patently absurd:
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/robison/index.html

@@ -584,11 +584,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/schneiderwent/README.md

@@ -101,10 +101,10 @@ in a normal 3270 environment.
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/schneiderwent/index.html

@@ -521,11 +521,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/thadgavin/README.md

@@ -163,10 +163,10 @@ Do not exceed 3 times recommended dose.  May cause sickness, dizziness, nausea.
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/thadgavin/index.html

@@ -539,11 +539,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->
 

2000/tomx/README.md

@@ -132,10 +132,10 @@ or converting tabs to spaces can be disastrous.
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->

2000/tomx/index.html

@@ -543,11 +543,11 @@ Jump to: <a href="#">top</a>
 
     You are free to share and adapt this file under the terms of this license:
 
-	Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
+        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
 
     For more information, see:
 
-	https://creativecommons.org/licenses/by-sa/4.0/
+        https://creativecommons.org/licenses/by-sa/4.0/
 
 -->