diff -r 923b946347e6 -r e66bd5c563eb progs/catastrophic.js
--- a/progs/catastrophic.js	Mon Jul 27 01:55:05 2020 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,28 +0,0 @@
-
-
-
-// A case of catastrophic backtracking in JavaScript/Node.js
-//
-// regex: (a*)*b
-// strings: aa...
-//
-// call with:
-//
-//  $> node catastrophic.js 20
-//
-// call with timing as:
-//
-//  $> time node catastrophic.js 25
-
-
-const args = process.argv[2]
-
-var str = 'a'.repeat(args);
-
-console.log(str)
-
-var re = /^((a)*)*b$/;
-
-var res = re.test(str);
-
-console.log(res)