James G. Sack (jim) wrote:
> Carl Lowenstein wrote:
>> On 7/21/06, Michael O'Keefe <[EMAIL PROTECTED]> wrote:
>>>>> network.http.max-persistent-connections-per-server
>>>> Where do I find/change this?
>>> about:config
>>>
>> OK, now we have found "about:config" again.  Is there any way to edit
>> it with a _real_ editor rather than whatever is built into
>> Firefox/Mozilla.  This file seems to accumulate values, and they never
>> leave.  So I have about 30 or 40 lines relating to a printer that is
>> no longer part of my network.  I can find them by searching "dj1600"
>> but I don't seem to be able to select them all so as to perform a mass
>> deletion.
> 
> I'm guessing that about:config may be showing the union of factory
> defaults, (possibly) system-wide defaults, and user overrides.
> 
> There is a directory
>   ~/.mozilla/firefox/XXXXXXXX.default/
> which contains the user overrides in prefs.js
> 
> There is also a directory
>   ~/.mozilla/default/YYYYYYYY.slt
> which I suspect applies to the "mozilla" browser as opposed to firefox.
> 
> Perhaps you can find satisfaction by closing firefox, and editing the
> prefs.js file.

More info found at:
  http://kb.mozillazine.org/Firefox_:_FAQs_:_About:config_Entries
Follow the link about user.js, where it talks about prefs.js

I don't see any user.js in my system, but there is a prefs.js that
contains items which firefox about.config displays with a status of
'user set'.

OK, after a couple of experiments:

1. the recipe of creating a user.js file which will be applied to
extend/replace prefs.js on firefox startup seems to work as advertised.
I guess this means that changes to about:config settings provided by
user.js would only apply to the current session, since applying user.js
would revert those changes on next startup (not tested -- but I did
verify that firefox seems not to touch user.js).

2. these files are javascript and must be valid (eg don't drop the ';')

3. editing prefs.js does work (if done while firefox is not running).
Presumeably this is the only way to remove stuff. Removed stuff may then
re-appear (with default values and status of 'default'), for those which
are _required_, it seems.

4. Evidently 1,2,3 are subject to some sanity checking operations which
may fix anything that is invalid of conflicts with a more inclusive setting.

..jim

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