adds application name fix for gnome panel and dock

[hiisukun]

See issue #134
Scope limited to GNOME (although could be broadened).

[hiisukun]

As an aside, $XDG_CURRENT_DESKTOP seemed to have valid settings on a few DEs. It seemed more reliable than $DESKTOP_SESSION and others, though I don't understand the nuances that drive the differences. In case they are handy, some self-explanatory outputs I got were:

GNOME / Unity / KDE / XFCE / X-Cinnamon / LXDE

I'll leave it to you what the scope of the fix should apply to, and I left it just as "GNOME" for now. It is probably reasonable to expect people using non-standard DEs who want it applied to just remove that part of the if statement.

I'm not sure how you feel about a while $winid not empty loop, but I included it as my very old laptop (running xfce with cairo-dock) took 3-4 seconds to load the livestreamer gui. I don't code much but those kinds of loops scare me a little : D

Poking around a little further while doing it, I wasn't able to improve on the use of wmctrl or find a better alternative.

And of course, thanks to you for the great piece of software!

[bastimeyer]

Thanks for the PR...

I'm having an issue while testing it right now. I don't know why, but it's just removing the "Unknown" title from the panel and it's not changing it to "Livestreamer Twitch GUI". Although I can see that WM_CLASS(STRING) = "Livestreamer Twitch GUI" is being listed when I check it (xprop -id $winid). Do you know why this is happening? It's basically the same code as before, but now it's just not working. I'm testing it in live-session of Ubuntu Gnome 15.04...

I left it just as "GNOME" for now

Yeah it's ok, this can easily be extend later on...

loop

I guess it should be fine the way it is now.

[hiisukun]

Hmm, I'll try and reproduce.

Initial guess if the code seems fine, is perhaps gnome is a little confused. Try reloading it (Alt+F2, type 'r' without quotes then press enter).

I'll sit on freenode for a bit if you'd like to chat outside of these messages.

[hiisukun]

I can reproduce this behaviour if I place a newline char \n anywhere in the WM_CLASS string. Notably this includes placing it after the closing quotation marks, like this:

xprop -id 0x02c00001 -f WM_CLASS 8s -set WM_CLASS "Livestreamer Twitch GUI"\n

Any possibility that while dev'ing for crossplatform, some sneaky newline shenanigans is going on? I know it is a bit of a stretch...

So far other than that, I can only get blank title in the gnome menubar by setting the value to an empty string "", though I am scratching my head as to what else to try.

[bastimeyer]

There is no newline character or something like that... Something must be wrong with my gnome session, I think. It did work for me earlier, so it must be something else.
I'm going to merge this now, thanks for the effort.