Add 2000/dlowe/try.sh, update bugs.md, format

The try.sh script also has some fixes in the author's remarks (as in
they were fixed in the author's remarks) - it had "s in the command line
rather than single quotes but some of these command lines had * which
would expand to the files in the directory, causing errors.

The bugs.md has been updated with the issue of not printing 'poot' when
it should. I did some debugging and removed some (obviously nonsense)
ideas I had put in before (without thinking, being too tired, whatever
other reason or reasons). The real issue is a very strange one to be
sure.

I am pretty sure the reason it does not work with macOS (this was
already noted but worth repeating) is the version of perl as the author
noted this as an issue. We still have it as a known bug (some platforms)
but I don't think it's possible to fix without a higher perl version and
neither MacPorts nor Homebrew seem to have this.

2000/dlowe/README.md

@@ -127,19 +127,19 @@ Floating point exception (core dumped) (or something to that effect)
 ### Examples:
 
 ```sh
-$ echo "12 13 14 15 16 + + + + f" | ./dlowe
+$ echo '12 13 14 15 16 + + + + f' | ./dlowe
 70
-$ echo "12 13 14 15 16 17 + - * / p" | ./dlowe
+$ echo '12 13 14 15 16 17 + - * / p' | ./dlowe
 -0.0515873015873016
-$ echo "+" | ./dlowe
+$ echo '+' | ./dlowe
 stack empty
-$ echo "999999999999999 1 + p" | ./dlowe
+$ echo '999999999999999 1 + p' | ./dlowe
 1e+15
-$ echo "99999999999999 1 + p" | ./dlowe
+$ echo '99999999999999 1 + p' | ./dlowe
 100000000000000
-$ echo "12.5 9 % 10 * 15 + f" | ./dlowe
+$ echo '12.5 9 % 10 * 15 + f' | ./dlowe
 50
-$ echo "7 P 6 d P P 8 p" | ./dlowe | tr 876 tpo
+$ echo '7 P 6 d P P 8 p' | ./dlowe | tr 876 tpo
 poot
 ```
 

2000/dlowe/try.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 2000/dlowe
+#
+
+# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
+# this way allows us to have the user specify a different compiler in an easy
+# way.
+if [[ -z "$CC" ]]; then
+    CC="cc"
+fi
+
+make CC="$CC" all >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+echo "$ echo '13 14 15 16 17 + - * / p' | ./dlowe" 1>&2
+echo '13 14 15 16 17 + - * / p' | ./dlowe
+
+echo "$ echo '12 13 14 15 16 + + + + f' | ./dlowe" 1>&2
+echo '12 13 14 15 16 + + + + f' | ./dlowe
+
+echo "$ echo '12 13 14 15 16 17 + - * / p' | ./dlowe" 1>&2
+echo '12 13 14 15 16 17 + - * / p' | ./dlowe
+
+echo "$ echo '+' | ./dlowe" 1>&2
+echo '+' | ./dlowe
+
+echo "$ echo '999999999999999 1 + p' | ./dlowe" 1>&2
+echo '999999999999999 1 + p' | ./dlowe
+
+echo "$ echo '99999999999999 1 + p' | ./dlowe" 1>&2
+echo '99999999999999 1 + p' | ./dlowe
+
+echo "$ echo '12.5 9 % 10 * 15 + f' | ./dlowe" 1>&2
+echo '12.5 9 % 10 * 15 + f' | ./dlowe