[core] never evaluate else branches until the previous branches are aready (fixes #2598)

The first condition which evaluates true in any if-else... condition
chain short-circuits the chain, and any remaining conditions in the
chain are marked false.

Previous conditions in if-else condition chaining must be evaluatable
(to true or false) -- must not remain in unset (not yet evaluatable)
state -- prior to evaluating later conditions.  Since any true
condition short-circuits remaining conditions, all prev conditions
must be false prior to evaluating later conditions.

From: Glenn Strauss <gstrauss@gluelogic.com>

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-1.4.x@3081 152afb58-edef-0310-8abb-c4023f1b3aa9

1 files changed, 6 insertions, 0 deletions

diff --git a/tests/condition.conf b/tests/condition.conf
index e0b36821..7e1c5cae 100644
--- a/tests/condition.conf
+++ b/tests/condition.conf
@@ -86,3 +86,9 @@ else $HTTP["host"] == "test4.example.org" {
 		)
 	}
 }
+
+$HTTP["url"] != "/show/other/server-tag" {
+}
+else $HTTP["scheme"] == "http" {
+	server.tag = "special tag"
+}