Add 1987/hines/try.sh

The files goto.c and goto.txt were also added. The first one is a short
file that is easy to see how many 'goto's there are and the goto.txt
file has seven 'goto's and one 'Goto' to demonstrate that the program is
case-sensitive.

The .gitignore file was updated with 'goto' though the Makefile does not
have (of course) a 'goto' rule as it's only there to have a C file which
is easy to see how many 'goto's there are.

1987/hines/.gitignore

@@ -1,6 +1,7 @@
 #
 # sort with: sort -d -u
 *.dSYM
+goto
 hines
 hines.alt
 hines.orig

1987/hines/README.md

@@ -15,7 +15,7 @@ make all
 ### Try:
 
 ```sh
-./hines hines.c
+./try.sh
 ```
 
 

1987/hines/goto.c

@@ -0,0 +1,9 @@
+int main(void)
+{
+    goto x;
+    x: goto y;
+    y: goto z;
+    z: goto a;
+    a: goto end;
+    end: return 0;
+}

1987/hines/goto.txt

@@ -0,0 +1,2 @@
+Goto goto goto goto
+goto goto goto goto

1987/hines/try.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 1987/hines
+#
+
+# 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="$CC" all >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+show()
+{
+    if [[ "$#" -ne 1 ]]; then
+	echo "$0: expected 1 arg to show(), got: $#" 1>&2
+	return
+    fi
+
+    read -r -n 1 -p "Press any key to show $1 (space = next page, q = quit): "
+    echo 1>&2
+    less -rEXF "$1"
+    echo 1>&2
+
+    read -r -n 1 -p "Press any key to run: ./hines $1: "
+    echo 1>&2
+    ./hines "$1"
+    echo 1>&2
+}
+
+show hines.c
+
+show goto.c
+
+show goto.txt