[Bug 50598] Wine Clipboard not always shared across to X11

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50598

--- Comment #3 from Pau Coma Ramirez <paucoma at gmail.com> ---
So Investigating the source code 

https://source.winehq.org/git/wine.git/blob/HEAD:/dlls/winex11.drv/clipboard.c#l2099

2111     if ((event->selection != x11drv_atom(CLIPBOARD)) &&
2112         (!use_primary_selection || event->selection != XA_PRIMARY)) goto
done;

Searching for who was seeting the variable <use_primary_selection>

dlls/winex11.drv/x11drv_main.c    
74 BOOL use_primary_selection = FALSE;

397     if (!get_config_key( hkey, appkey, "UsePrimarySelection", buffer,
sizeof(buffer) ))
398         use_primary_selection = IS_OPTION_TRUE( buffer[0] );


Specifically within the function [static void
setup_options(void)](https://source.winehq.org/git/wine.git/blob/HEAD:/dlls/winex11.drv/x11drv_main.c#l349)

First it checks if the /* @@ Wine registry key: HKCU\Software\Wine\X11 Driver
*/ exists and assigns handle to hkey
Second it checks if the /* @@ Wine registry key: HKCU\Software\Wine\AppDefaults
*/ exits 
Then checks if the /* @@ Wine registry key:
HKCU\Software\Wine\AppDefaults\app.exe\X11 Driver */ exists and assigns handle
to appkey

the function `get_config_key(...)` 
First checks the application specific value
`HKCU\Software\Wine\AppDefaults\app.exe\X11 Driver\UsePrimarySelection" and
returns its assigned value if it exists
if it did not find an application specific value it checks the current user
"general" value HKCU\Software\Wine\X11 Driver\UsePrimarySelection" and returns
its assigned value if it exists

"True" has the following equivalencies.
121 #define IS_OPTION_TRUE(ch) \
122     ((ch) == 'y' || (ch) == 'Y' || (ch) == 't' || (ch) == 'T' || (ch) ==
'1')


I have added a specific registry for the app, and it has no influence on the
app when started through the ubuntu launcher. 
When started from a terminal, currently it works. when earlier it didn't
without the registry key. Yet previously it had worked without the registry key
so I am not convinced that this is this... appears kinda randomly.... well
requires more testing..  I will continue testing with the app specific registry
key in place and see how it behaves.

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