From 07c10027f7fd7764062facb786dac61dd4c56e22 Mon Sep 17 00:00:00 2001
From: Cody Boone Ferguson <53008573+xexyl@users.noreply.github.com>
Date: Wed, 6 Dec 2023 06:40:24 -0800
Subject: [PATCH] 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 | 14 +++++------
 2000/dlowe/try.sh    | 37 +++++++++++++++++++++++++++++
 bugs.md              | 55 ++++++++++++++++++++++++++++++++++++++------
 thanks-for-fixes.md  |  2 ++
 4 files changed, 94 insertions(+), 14 deletions(-)
 create mode 100755 2000/dlowe/try.sh

diff --git a/2000/dlowe/README.md b/2000/dlowe/README.md
index 5e3e4329b..137f664df 100644
--- a/2000/dlowe/README.md
+++ b/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
 ```
 
diff --git a/2000/dlowe/try.sh b/2000/dlowe/try.sh
new file mode 100755
index 000000000..37c85c701
--- /dev/null
+++ b/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
diff --git a/bugs.md b/bugs.md
index c70d3f949..d68c765e7 100644
--- a/bugs.md
+++ b/bugs.md
@@ -1565,13 +1565,6 @@ echo "7 P 6 d P P 8 p" | ./dlowe | tr 876 tpo
 ```
 
 which should print out `poot` but it doesn't, not in linux and not in macOS.
-This might in part be because `./dlowe` will show not a number with `876` but
-rather
-
-```sh
-$ echo "7 P 6 d P P 8 p" | ./dlowe
-7668
-```
 
 In linux it doesn't crash but it doesn't print anything out either.
 
@@ -1579,6 +1572,54 @@ In macOS it crashes; it might appear to not crash in macOS but this is because
 of the pipeline. If you remove the `| tr 876 tpo` part of the command you will
 see that it does indeed crash!
 
+The reason for this not working is really strange.
+
+```sh
+$ echo "7 P 6 d P P 8 p" | ./dlowe     
+7668
+$ echo "7 P 6 d P P 8 p" | ./dlowe | grep 7
+$
+```
+
+Why? Is it writing to stdout? Let's try some other things:
+
+```sh
+$ echo 7668 | tr 876 tpo
+poot
+```
+
+Okay so we know that it SHOULD work. But we also know something funny is going on with stdout and the entry. Another experiment:
+
+```sh
+$ echo "7 P 6 d P P 8 p" | ./dlowe 1>&2 | grep 7
+7668
+```
+
+Okay so now it sees it, `grep`. But watch!
+
+```sh
+$ echo "7 P 6 d P P 8 p" | ./dlowe 2>foo 1>&1
+7668
+$ cat foo
+
+```
+
+.. so at this hour it does appear to be writing to stdout but yet somehow it doesn't? But watch:
+
+```sh
+$ echo "7 P 6 d P P 8 p" | ./dlowe 1>foo 1>&1
+$ cat foo
+$
+```
+
+Well this explains why the `tr` does not transliterate it to `poot` but why is
+this happening? Why can't it be redirected to another file even? 
+
+If it could be figured out why it's not writing to stdout and yet at the same
+time is writing to stdout one bug could be fixed. Maybe it's the perl messing
+with things but we don't know.
+
+
 Other commands do work, however, and give the appropriate output, such as:
 
 ```sh
diff --git a/thanks-for-fixes.md b/thanks-for-fixes.md
index 447135445..c21981d26 100644
--- a/thanks-for-fixes.md
+++ b/thanks-for-fixes.md
@@ -2255,6 +2255,8 @@ He also added the [try.sh](2000/dhyang/try.sh) script.
 `PL_na` was once `na`. He notes that this entry crashes under macOS but it works
 under Linux after this change.
 
+Cody also added the [try.sh](2000/dlowe/try.sh) script.
+
 
 ## [2000/jarijyrki](2000/jarijyrki/jarijyrki.c) ([README.md](2000/jarijyrki/README.md]))