Re: Proposal: add a _NET_WM_DESKTOP_FILE

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On Thursday, November 12, 2015 7:53:17 AM CET Carsten Haitzler wrote:
> On Wed, 11 Nov 2015 11:20:35 -0800 "Jasper St. Pierre"
> <[email protected]>
> said:
> > Given that most applications already have the WM_CLASS trick
> > correctly, why can't we just say that users should try to match
> > WM_CLASS to their desktop file correctly? I don't see a reason to add
> > a new field when WM_CLASS already does what we want.
> 
> this is what we've been doing for years. use _NET_STARTUP_ID as a definitive
> (we launched this and thus we know the desktop file that was associated
> with that launch - so just use that desktop file and ignore all else" or
> fall back to _NET_WM_PID (track child pid from launch of desktop file) and
> if that doesn't work - guess-o-rama based on WM_CLASS. it works really well
> 99% of the time in regular desktop usage.
> 
> i see this property as yet another bit of info to add into the guessing
> pipeline above. likely throw it in after the startup id matcheroo or the
> pid match (as i'd prefer to use that first for the cases that people make
> custom desktop files with different icons that launch the SAME binaries but
> with different options, and using what the process provides is less
> accurate here)

yeah, my motivation was triggered by stumbling over some of our matching code 
and thought "we can do better". As Wayland has such a hint I thought it might 
be helpful for everybody to have it on X11 as well.

Cheers
Martin
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