Add 1989/robison/try.sh

Also updated bugs.md with another case where the program might 'break
into tiny bits' but as a feature not a bug. Checking the source code
will give all you need to know about the 'problem' quite well.

1989/robison/README.md

@@ -29,27 +29,17 @@ For more detailed information see [1989 robison in bugs.md](/bugs.md#1989-robiso
 ```sh
 ./robison
 11x10
+# enter other expressions
 
-echo 1x10x111 | ./robison
+./try.sh
-
-echo 1+1+10 | ./robison
-
-echo 100 - 1 | ./robison
-
-echo -100 x 100 + 1 | ./robison
 
 echo 100 / 100 | ./robison # <-- what happens here ?
 ```
 
-NOTE: This program will very likely crash or break into tiny bits
+NOTE: This program will very likely crash or break into tiny bits :-) if you
-:-) if you feed it numbers with non-binary digits.
+feed it numbers with non-binary digits. This, as you might notice if you try one
-
+of the above commands, can happen with other input as well. If you wish to
-This is supposed to happen.  As is written in the
+understand why this happens check the source code.
-[The Jargon File](http://catb.org/jargon/html/F/feature.html):
-
-```
-That's not a bug, that's a feature.
-```
 
 
 ## Judges' remarks:

1989/robison/try.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 1989/robison
+#
+
+# 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
+
+read -r -n 1 -p "Press any key to run: echo 1x10x111 | ./robison: "
+echo 1>&2
+echo 1x10x111 | ./robison
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: echo 1+1+10 | ./robison: "
+echo 1>&2
+echo 1+1+10 | ./robison
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: echo 100 - 1 | ./robison: "
+echo 1>&2
+echo 100 - 1 | ./robison
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: echo -100 x 100 + 1 | ./robison: "
+echo 1>&2
+echo -100 x 100 + 1 | ./robison
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: echo 101x111-100 | ./robison: "
+echo 1>&2
+echo 101x111-100 | ./robison
+echo 1>&2

bugs.md

@@ -543,6 +543,9 @@ If you want to try and fix this (mis)feature, you are welcome to try.
 This program will very likely crash or break into tiny bits :-) if you feed it
 numbers with non-binary digits.
 
+There are also other cases where this can happen for instance using unsupported
+operators like `/`. To see what operators are supported check the source code.
+
 
 ## 1989 westley
 

thanks-for-help.md

@@ -849,6 +849,8 @@ cd 1989/robison ; make diff_orig_prog
 
 (It adds the C token pasting operator `##` instead of `/**/`.)
 
+Cody also added the [try.sh](/1989/robison/try.sh) script.
+
 
 ## <a name="1989_tromp"></a>[1989/tromp](/1989/tromp/tromp.c) ([README.md](/1989/tromp/README.md]))