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-rw-r--r--lib/js/urweb.js18
1 files changed, 12 insertions, 6 deletions
diff --git a/lib/js/urweb.js b/lib/js/urweb.js
index 42660bf0..4d9a1419 100644
--- a/lib/js/urweb.js
+++ b/lib/js/urweb.js
@@ -129,13 +129,17 @@ function pf(loc) {
throw ("Pattern match failure (" + loc + ")");
}
+var lameDuck = false;
+
function runHandlers(kind, ls, arg) {
- if (ls == null)
- alert(kind + ": " + arg);
- for (; ls; ls = ls.next)
- try {
- exec({c:"a", f:{c:"a", f:ls.data, x:{c:"c", v:arg}}, x:{c:"c", v:null}});
- } catch (v) { }
+ if (!lameDuck) {
+ if (ls == null)
+ alert(kind + ": " + arg);
+ for (; ls; ls = ls.next)
+ try {
+ exec({c:"a", f:{c:"a", f:ls.data, x:{c:"c", v:arg}}, x:{c:"c", v:null}});
+ } catch (v) { }
+ }
}
var errorHandlers = null;
@@ -911,6 +915,8 @@ function listener() {
var lines = text.split("\n");
if (lines.length == 1 && lines[0] == "R") {
+ lameDuck = true;
+
if (isPost)
history.back();
else