setup.sh: Fix GNU screen Git check.

Broken in 6b3da4f032ce15fb6d8557e72b0e6611e2476e59.

diff --git a/setup.sh b/setup.sh
index cc77d54e5a6c7b6a450ad69e7f030e907e4c2475..55efa84bb13cadfae3cbef9ea446eff703f5c3b2 100755 (executable)
--- a/setup.sh
+++ b/setup.sh
@@ -89,7 +89,7 @@ fi
 # I use some features of GNU screen which are only in Git or very recent GNU
 # screen versions. Drop them on machines which have older versions. They are
 # marked as "(GIT)".
-if test -d "$HOME/development/shell/screen"; then
+if test ! -d "$HOME/development/shell/screen"; then
     echo screenrc: removing Git features
     grep -v '(GIT)' screenrc > screenrc.tmp
     mv screenrc.tmp screenrc