diff --git a/lib/parser.js b/lib/parser.js
index bf52b77..ef82e6c 100644
--- a/lib/parser.js
+++ b/lib/parser.js
@@ -16,19 +16,25 @@ module.exports = () => {
 
   const triee = new EventEmitter();
   const triemit = triee.emit.bind(triee);
+  let triemit2 = triemit;
 
   const cxt = lib.init(lifemit, triemit, info);
 
   s._write = function (chunk, encoding, callback) {
-    lib.execute(cxt, lifemit, triemit, info, chunk);
+    lib.execute(cxt, lifemit, triemit2, info, chunk);
     callback();
   };
 
   s.change = {
     on: (id, fn) => {
+      triemit2 = triemit;
       triee.on(id, fn);
       const triggerString = triee.eventNames().join(' ') + '  ';
       lib.setTrigger(cxt, triggerString);
+    },
+    any: fn => {
+      triemit2 = fn;
+      lib.setTrigger(cxt, '\0');
     }
   };
 
diff --git a/test/any.js b/test/any.js
new file mode 100644
index 0000000..c04a42b
--- /dev/null
+++ b/test/any.js
@@ -0,0 +1,43 @@
+'use strict';
+
+const expect = require('chai').expect;
+const lib = require('../lib/index.js');
+
+describe('any', () => {
+
+  it('simple', done => {
+    const inst = lib.parser();
+    const dump = [];
+    inst.change.any((id, time, cmd, value, mask) => {
+      dump.push({
+        id, time, cmd, value, mask
+      });
+    });
+
+    inst.on('finish', () => {
+      expect(dump).to.deep.eq([
+        { id: 'ABC', time: 100, cmd: 14, value: 0n, mask: 0n },
+        { id: '123', time: 200, cmd: 15, value: 1n, mask: 0n },
+        { id: 'XyZ', time: 300, cmd: 14, value: 0n, mask: 0n },
+        { id: 'foo', time: 400, cmd: 15, value: 1n, mask: 0n },
+      ])
+      // console.log(dump);
+      done();
+    });
+
+    inst.write(`\
+$enddefinitions $end
+#100
+0ABC
+#200
+1123
+#300
+0XyZ
+#400
+1foo
+`);
+    inst.end();
+  });
+});
+
+/* eslint-env mocha */
diff --git a/vcd_spans.c b/vcd_spans.c
index dab5861..1a26cb7 100644
--- a/vcd_spans.c
+++ b/vcd_spans.c
@@ -25,6 +25,9 @@ int stringEq (
   const unsigned char* p,
   const unsigned char* endp
 ) {
+  if (gold[0] == 0) {
+    return 1;
+  }
   unsigned char* i;
   unsigned char* j;
   i = gold;