841712 - Copy in Error Console has some errors

Status: RESOLVED FIXED

(Toolkit Graveyard :: Error Console, defect)

Description

[Julien Wajsberg [:julienw]]

This is in a current nightly: 21.0a1 (2013-02-14)

STR:
* open Error Console (_not_ the Web Console)
* copy a line which has a line number
* paste it in a text editor

Expected:
* we have the same informations as what is displayed

Actual:
* the line number is missing and sometimes some code is displayed instead

For example, here is one example :

Timestamp: 15/02/2013 13:40:12
Warning: TypeError: function WCF__outputMessageFromQueue does not always return a value
Source File: chrome://browser/content/devtools/webconsole.js
Line:     return lastVisible ? node : null; , Column: 32
Source Code:
    return lastVisible ? node : null; 

See that the "line" line has the same text as in "source code", with a "column" information too (which is fine)

Another example without a source code line :

Timestamp: 15/02/2013 13:40:12
Warning: TypeError: function CommandController_isCommandEnabled does not always return a value
Source File: chrome://browser/content/devtools/webconsole.js
Line: (null)

Here you see the line is "null" whereas it was displayed in the Console.

This works correctly in Aurora.

Comment 1

[Julien Wajsberg [:julienw]]

I didn't want to use the "Console" component as it's not related to the Web Console but to our old beloved Error Console ;)

Comment 2

[Panos Astithas (he/him) [:past] (please ni?)]

The Error Console has its own component in Toolkit.

Comment 3

[Loic]

Regressionn range:

m-c
good=2012-01-24
bad=2012-01-25
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=98ea4d294369&tochange=a207f33adc1a

Suspected bug:
Jared Wein — Bug 831020 - Errors in the error console with very long reference lines hang the browser. r=neil

Comment 4

[Jared Wein [:jaws] (please needinfo? me)]

Attachment: Patch

Comment 5

[[e-mail]]

Comment on attachment 714401 [details] [diff] [review]
Patch

Whoops, it's worse than I feared.

"line" needs to be fixed in the subsequent line which is also using this.mSourceLine by mistake; this.mSourceLine actually belongs where it says this.getAttribute("code") further down! Meanwhile filterElement is now checking the source code twice :-(

[Was bug 764346 supposed to filter on line?]

Comment 6

[Jared Wein [:jaws] (please needinfo? me)]

(In reply to [e-mail] from comment #5)
> [Was bug 764346 supposed to filter on line?]

Yes, the Web Console allows filtering on line number so the idea was to make the two filters work the same way. See https://bugzilla.mozilla.org/show_bug.cgi?id=764346#c3.

Comment 7

[Jared Wein [:jaws] (please needinfo? me)]

Attachment: Patch v2

Thank you for the quick review and sorry for not catching those other issues.

I fixed the issue with filterElement searching the code twice so it now searches the line number. I kept the filtering on getAttribute("code") instead of mSourceLine for two reasons:
1) "code" is what is shown to the user and so it helps to show a user why a filtered entry is appearing
2) The lines are truncated for performance reasons, so filtering on extremely long lines won't be good for perf.

Comment 8

[[e-mail]]

Comment on attachment 714458 [details] [diff] [review]
Patch v2

r=me on the toString change but the filterElement change should be reverted to the version prior to bug 831020 instead.

Comment 9

[Jared Wein [:jaws] (please needinfo? me)]

Thanks!

https://hg.mozilla.org/integration/mozilla-inbound/rev/fb6dd685d3a9

Comment 10

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/fb6dd685d3a9