patch 8.0.0277: the GUI test may trigger fontconfig and take a long time
Problem: The GUI test may trigger fontconfig and take a long time.
Solution: Set $XDG_CACHE_HOME. (Kazunobu Kuriyama)
diff --git a/src/testdir/unix.vim b/src/testdir/unix.vim
index 36dd4e1..2290ec9 100644
--- a/src/testdir/unix.vim
+++ b/src/testdir/unix.vim
@@ -2,4 +2,9 @@
" Always use "sh", don't use the value of "$SHELL".
set shell=sh
+" While some tests overwrite $HOME to prevent them from polluting user files,
+" we need to remember the original value so that we can tell external systems
+" where to ask about their own user settings.
+let g:tester_HOME = $HOME
+
source setup.vim