445280 - Firebug causes the wrong filename (e.g. nsHelperAppDlg.js) and line number to be reported in the Error Console

Status: RESOLVED WORKSFORME

(Toolkit Graveyard :: Error Console, defect)

Description

[John J. Barton]

This was originally reported as a Firebug error:
http://code.google.com/p/fbug/issues/detail?id=810
but its too weird so I want to blame someone else...

The test case in comment 6 of the bug report:
http://code.google.com/p/fbug/issues/detail?id=810#c6

http://fbug.googlecode.com/issues/attachment?aid=3046592258240534119&name=testcase.zip
has two files, both with syntax errors like
  alert("gaga
One is reported correctly. The other one is reported in the Firefox Error Console like this:

Error: missing ) after argument list
Source File: file:///C:/Program%20Files/Mozilla%20Firefox%203/components/nsHelperAppDlg.js
Line: 621, Column: 12
Source Code:
alert('gaga';

This message does not seem to come thru jsd's onError handler, I don't see it in Firebug at all.

Comment 1

[Philip Chee]

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.2pre) Gecko/2008071105 Firefox/3.0

*without Firebug installed* I see this:

Error: missing ) after argument list
Source file: file:///C:/T1/t1/ga.js
Line: 1, Column: 12
Source code:
alert('gaga';

(with the pointer at the semicolon ";")

Comment 2

[John J. Barton]

Do you see two see two error messages? Is the other one correct?

How can an extension alter the errors reported by Error Console?

Comment 3

[John J. Barton]

(In reply to comment #2) 
> How can an extension alter the errors reported by Error Console?
> 

Perhaps by using nsIScriptError.init(),
http://www.xulplanet.com/references/xpcomref/ifaces/nsIScriptError.html
Perhaps this method operates on the error object so if it gets called before the Error Console renders the error, then the new values are shown.