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In the Compiled Scripts view this will show up as:

19:24:13.149


Script: javascript:function%20b(){}
Line: 1

function b() {
}



19:24:13.154


Script: javascript:function%20b(){}
Line: 1

function b() {
}


function b() {
}

In the Executed Scripts view as:

19:24:13.157


Script: javascript:function%20b(){}
Line: 1


Number of calls: 1

Average execution time (ms): 1


function b() {
}


function b() {
}

1) Why is there shown and not only 2) If you click on the "link" an empty View Source window will open and will be printed to the error console.

1) Good question, I wondered about this as well. This is a regression in Firefox 3.5, Firefox 3.0 didn't do that. Note that JavaScript Deobfuscator isn't creating the text representation of scripts itself - that information comes from the JavaScript engine.

2) Same happens if you click a javascript: URL in Error Console. It's an issue of the View Source window in Firefox, it cannot do anything meaningful with such URLs. The relevant bug is https://bugzilla.mozilla.org/show_bug.cgi?id=318245.

1) Took some time to investigate this issue, filed https://bugzilla.mozilla.org/show_bug.cgi?id=508696 on it.

This post was written in Jan of this year and still this is happening what is being done to resolve it?

Which of the Mozilla bugs do you mean? Not that this is a good place to ask about progress. I rarely have time to pick up Mozilla bugs (particularly JS engine bugs, they are usually hard to resolve for me), if nobody else does there will be no progress.