diff --git a/2019/endoh/.gitignore b/2019/endoh/.gitignore
index f63f9f19d..31ac2bf7a 100644
--- a/2019/endoh/.gitignore
+++ b/2019/endoh/.gitignore
@@ -1,6 +1,7 @@
 #
 # sort with: sort -d -u
 *.dSYM
+ascii
 indent
 indent.c
 indent.o
diff --git a/2019/endoh/Makefile b/2019/endoh/Makefile
index dd5a64307..473de4155 100644
--- a/2019/endoh/Makefile
+++ b/2019/endoh/Makefile
@@ -111,7 +111,7 @@ PROG= prog
 OBJ= ${PROG}.o
 CSRC= ${PROG}.o
 DATA=
-TARGET= ${PROG}
+TARGET= ${PROG} ascii
 #
 ALT_OBJ=
 ALT_TARGET=
@@ -132,6 +132,9 @@ all: data ${TARGET}
 ${PROG}: ${PROG}.c
 	${CC} ${CFLAGS} -g $< -o $@ ${LDFLAGS}
 
+ascii: ascii.c
+	${CC} $< -o $@
+
 # alternative executable
 #
 alt: data ${ALT_TARGET}
diff --git a/2019/endoh/README.md b/2019/endoh/README.md
index 2130710bf..b4ce509d8 100644
--- a/2019/endoh/README.md
+++ b/2019/endoh/README.md
@@ -25,10 +25,24 @@ For more detailed information see [2019 endoh in bugs.md](/bugs.md#2019-endoh).
 
 ### Try:
 
+If you have `gdb(1)` installed:
+
+```sh
+./try.sh
+```
+
+Note that in macOS installing `gdb(1)` takes multiple steps - it's not just a
+matter of installing `gdb(1)` and that's that. The [try.sh](try.sh) script has
+only been tested with linux.
+
+You might also wish to try:
+
 ```sh
 gdb ./prog || lldb ./prog
 ```
 
+and then type in `r` (to run program) and then `bt` (for backtrace).
+
 
 ## Judges' remarks:
 
@@ -38,6 +52,7 @@ ascii` when debugging it to reveal its purpose.
 
 ## Author's remarks:
 
+
 ### backtrace quine:
 
 Compile prog.c with no optimization.
diff --git a/2019/endoh/ascii.c b/2019/endoh/ascii.c
new file mode 100644
index 000000000..f09ba521f
--- /dev/null
+++ b/2019/endoh/ascii.c
@@ -0,0 +1,19 @@
+/*
+ * ascii.c - simple program that shows the character value of ASCII values, if
+ * isascii() is true, to help demonstrate IOCCC winner 2019/endoh.
+ *
+ * Will not do anything if no args specified. Use xargs(1) to pass args to
+ * program if it's a lot of characters.
+ */
+#include <stdio.h>
+#include <ctype.h>
+#include <stdlib.h>
+int main(int argc, char **argv)
+{
+    int i;
+    for (argc = 1; argv[argc]; ++argc)
+    {
+	i=atoi(argc[argv]);
+	if (isascii(i)) printf("%c", i);
+    }
+}
diff --git a/2019/endoh/try.sh b/2019/endoh/try.sh
new file mode 100755
index 000000000..764447e0e
--- /dev/null
+++ b/2019/endoh/try.sh
@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 2019/endoh
+#
+
+# 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
+
+# Before we do anything we have to make sure we have GDB available
+#
+GDB="$(type -P gdb)"
+
+if [[ -z "$GDB" ]]; then
+    echo "No gdb found, install gdb and try again." 1>&2
+    exit 1
+fi
+
+make CC="$CC" all >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+echo "$ $GDB -q -x prog.c ./prog | head -n 25" 1>&2
+read -r -n 1 -p "Press any key to use source code as GDB command file (first 25 lines): "
+echo >&2
+"$GDB" -q -x prog.c ./prog | head -n 25
+
+echo "$ $GDB -q -x prog.c ./prog | cat | grep : | cut -f 2 -d:|xargs ./ascii"
+read -r -n 1 -p "Press any key to use the backtrace to reconstruct prog.c (space = next page, q = quit): "
+echo 1>&2
+"$GDB" -q -x prog.c ./prog | cat | grep : | cut -f 2 -d: | xargs ./ascii | less -rEXF
+echo 1>&2
+
+read -r -n 1 -p "Press any key to compare reconstructed code with original: "
+echo 1>&2
+echo "$ "$GDB" -q -x prog.c ./prog | cat | grep : | cut -f 2 -d: | xargs ./ascii > prog2.c" 1>&2
+"$GDB" -q -x prog.c ./prog | cat | grep : | cut -f 2 -d: | xargs ./ascii > prog2.c
+echo "$ diff -s prog.c prog2.c" 1>&2
+diff -s prog.c prog2.c
diff --git a/thanks-for-help.md b/thanks-for-help.md
index ffe0b7e9f..a111c8f0b 100644
--- a/thanks-for-help.md
+++ b/thanks-for-help.md
@@ -4214,6 +4214,12 @@ As this is a backtrace quine having the optimiser enabled is not a good idea so
 compilation as debugging symbols might just be useful for an entry that's
 supposed to segfault :-)
 
+Cody also added the simple [ascii.c](/2019/endoh/ascii.c) that (while it has an
+arg) prints out the character of the ASCII value (uses `isascii(3)` first). This
+combined with the [try.sh](/2019/endoh/try.sh) script that he added allows one
+to easily reconstruct the source code through GDB by the fact it's a backtrace
+quine.
+
 
 ## <a name="2019_karns"></a>[2019/karns](/2019/karns/prog.c) ([README.md](/2019/karns/README.md]))