D9873: Manually take XKB_DEFAULT_{RULES,MODEL,LAYOUT,VARIANT,OPTIONS} into account

[Fabian Vogt]

fvogt created this revision.
fvogt added reviewers: Plasma, graesslin.
Restricted Application added a project: KWin.
Restricted Application added subscribers: KWin, kwin.
fvogt requested review of this revision.
Restricted Application edited projects, added Plasma; removed KWin.

REVISION SUMMARY
  As kwin_wayland can have the CAP_SYS_NICE capability, libxkbcommon does not
  read environment variables (see secure_getenv).
  So process them here, in the same way xkb_context_sanitize_rule_names would.
  
  BUG: 388249

TEST PLAN
  kwin_wayland has the capability set, keyboard layout is applied correctly.

REPOSITORY
  R108 KWin

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D9873

AFFECTED FILES
  xkb.cpp
  xkb.h

To: fvogt, #plasma, graesslin
Cc: kwin, plasma-devel, #kwin, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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