if there is nothing to install, do nothing and exit in install-tl

git-svn-id: svn://tug.org/texlive/trunk@15004 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 4 insertions, 0 deletions

diff --git a/Master/install-tl b/Master/install-tl
index 08e23c7b371..0929d0fd2f2 100755
--- a/Master/install-tl
+++ b/Master/install-tl
@@ -577,6 +577,10 @@ sub do_installation {
     debug("Switching to non-admin mode due to explicit user request!\n");
     non_admin() if !$vars{'option_w32_multi_user'};
   }
+  if ($vars{'n_collections_selected'} <= 0) {
+    tlwarn("Nothing selected, nothing to install, exiting!\n");
+    exit 1;
+  }
   # do the actual installation
   my $h;
   prepare_installation();