On 2/28/2016 1:01 AM, Daniel wrote:
> On 28/02/2016 3:16 AM, David E. Ross wrote:
>> On 2/27/2016 2:09 AM, Daniel wrote:
>>> On 27/02/2016 3:16 AM, David E. Ross wrote:
>>>> On 2/26/2016 12:24 AM, Daniel wrote:
>>>>> On 26/02/2016 12:54 PM, David E. Ross wrote:
>>>>>> On 2/25/2016 3:25 PM, Ray_Net wrote:
>>>>>>> David E. Ross wrote on 25/02/2016 16:39:
>>>>>>>> On 2/25/2016 2:53 AM, Richard Owlett wrote:
>>>>>>>>> On 2/24/2016 6:26 PM, David E. Ross wrote:
>>>>>>>>>> On 2/24/2016 2:04 AM, Richard Owlett wrote:
>>>>>>>>>>> On 2/23/2016 7:46 PM, David E. Ross wrote:
>>>>>>>>>>>> [snip]
>>>>>>>>>>>>
>>>>>>>>>>>> Yes, I know the difference between a plugin and an extension. ...
>>>>>>>>>>>>
>>>>>>>>>>> But some readers, including myself [even though around since
>>>>>>>>>>> Netscape 4.x], do not.
>>>>>>>>>>> Could you point to an official definition of the terms "plugin"
>>>>>>>>>>> and "extension"?
>>>>>>>>>>> I for one have never seen the need to enhance in any way a
>>>>>>>>>>> standard release. I explicitly disable some longtime features
>>>>>>>>>>> such as cookies, JavaScript, and site specified colors/backgrounds.
>>>>>>>>>>>
>>>>>>>>>> Go to <https://en.wikipedia.org/wiki/Plug-in#Computing>.  There are 
>>>>>>>>>> four
>>>>>>>>>> bullets; the first two are relevant.
>>>>>>>>>>
>>>>>>>>> Thank you. When I said "official definition" I should have said
>>>>>>>>> something like "How does SeaMonkey (or Mozilla) define the
>>>>>>>>> distinction between a 'plugin' and an 'extension' ?"
>>>>>>>>>
>>>>>>>>     From actually using both plugins and extensions, the Wikipedia
>>>>>>>> description reflects reality.  When I open the Add-ons Manager, the
>>>>>>>> items under Extensions are indeed as described in the second bulltet on
>>>>>>>> the Wikipedia page; and the items under Plugins are as described in the
>>>>>>>> first bullet on that page.
>>>>>>>>
>>>>>>> So when a plugin crashes ... the browser is still alive.
>>>>>>> When an extension crashes... the browser crashes.
>>>>>>> Am I wrong ?
>>>>>>>
>>>>>>
>>>>>> I think that is correct.
>>>>>>
>>>>>> A plugin is installed separately and independently of the browser or any
>>>>>> other application that might launch it (e.g., Thunderbird).  The browser
>>>>>> launches the plugin to perform some task.  I generally download plugins
>>>>>> via SeaMonkey.  When I install a new plugin, however, I do so with
>>>>>> SeaMonkey terminated.  The same plugin -- not a separate installation --
>>>>>> can be used by other applications; it is not installed specifically for
>>>>>> each application that uses it.
>>>>>>
>>>>>> An extension is installed into a browser's profile, changing the
>>>>>> internal code of the browser when that profile is active.  I just now
>>>>>> installed an update for the Theme Font & Size Changer extension.  I had
>>>>>> to install it five times, once for each of four SeaMonkey profiles and
>>>>>> once again for Thunderbird.
>>>>>>
>>>>> Soooo .... A "Plug-in" is applied to a *SYSTEM/O.S* where as an
>>>>> "Extension" is applied to a *Program/Browser*?? Yes/No!!
>>>>>
>>>>
>>>> Yes.
>>>>
>>> Thank you .... but that then raises the question If Plug-ins are System
>>> wide, why are they shown with-in a Program?? Or is this suggesting that
>>> these System Plug-ins are being used by this Program ... but none of the
>>> other plug-ins install on this OS are being used by this Program??
>>>
>>
>> Plugins may be USED by SeaMonkey but do not change the code the way
>> extensions do.  If you want to see which plugins are really used by
>> SeaMonkey, on the SeaMonkey menu bar select [Edit > Preferences].  Then
>> on the Preferences window select [Browser > Helper Applications].  None
>> of the indicated applications are extensions; they are plugins.
>>
> So if Tools->Add-Ons Manager (about:addons) shows I have ...
> 1     *Always Activate*
> a.    Adobe Acrobat
> b.    Java (TM) Platform SE 8 U73
> c.    RealJukebox NS Plugin
> d.    RealNetworks(tm) Chrome Background Extension Plug-On (32-bit)
> e.    RealPlayer(tm) G2 LiveConnect-Enabled Plug-In (32-bit)
> f.    RealPlayer(tm) HTML5VideoShim Plug-In (32-bit)
> g.    Shockwave Flash
> h.    Shockwave for Director (11.5)
> 2     *Ask to Activate*
> a.    Java Development Toolkit 8.0.730.2
> b.    RealPlayer Download Plugin
> c.    Shockwave for Director (11.6.8.638)
> 
> whereas in Edit->Preferences->Browser->Helper Applications, I have ...
> a.    Adobe Acrobat Forms Documentation (app/vnd. adobe.xfdf)
> b.    Adobe Acrobat Forms Documentation (app/vnd. adobe.fdf)
> c.    Adobe Acrobat XML Data Package File
> d.    AVI video
> e.    Podcast
> f.    QuickTime video
> g.    Rich Text Document
> h.    Vidoe Podcast
> i.    Web Feed
> j.    Windows Media video
> 
> plus various others set to "Save File", "Always Ask"
> 
> How does the Tools list crossmatch with the Helper Apps listing??
> 

I am not sure about this.  However, I think that plugins listed by
Add-ons Manager will launch within the browser window while those listed
under Helper Applications that are NOT listed by Add-ons Manager cause
SeaMonkey to launch as separate, non-browser applications.  I notice
that, if I hover my cursor over an application in the Helper
Applications list, some of them say "(in SeaMonkey)" after the name of
the application.

Also, some applications are launched outside of SeaMonkey because they
are not really plugins.  Instead, SeaMonkey tries to open a file that
has a MIME type for which the outside application has set a system flag
(in Windows, a registry entry) that says "Application xxx is to be used
to open files that have MIME type abcd/defg".



-- 
David E. Ross

While many tributes to the late Supreme Court Associate Justice
Antonin Scalia now fill the news media, his legacy was not
necessarily positive.  See my "What Price Order, Mr. Justice Scalia?"
at <http://www.rossde.com/editorials/edtl_scalia_wrong.html>.
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