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doc: Further explain typical display socket lookup

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This change mentions the case where WAYLAND_SOCKET is used, which helps
people avoid just testing 'getenv(WAYLAND_DISPLAY)' to see if a
Wayland compositor is available;

Signed-off-by: Manuel Stoeckl <code@mstoeckl.com>
This commit is contained in:
Manuel Stoeckl 2021-03-02 22:04:58 -05:00 • committed by Simon Ser
parent 387adc6a79
commit 4a0c4e2119
1 changed files with 3 additions and 1 deletions
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4
doc/publican/sources/Protocol.xml
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@ -97,7 +97,9 @@
in the environment). Beginning in Wayland 1.15, implementations can
optionally support server socket endpoints located at arbitrary
locations in the filesystem by setting <emphasis>WAYLAND_DISPLAY</emphasis>
to the absolute path at which the server endpoint listens.
to the absolute path at which the server endpoint listens. The socket may
also be provided through file descriptor inheritance, in which case
<emphasis>WAYLAND_SOCKET</emphasis> is set.
</para>
<para>
Every message is structured as 32-bit words; values are represented in the