Lighttpd

Please develop setenv.push_environment(). This method would merge the new vars with any existing ones, unlike the existing add_environoment()

Module setenv has a function that one would expect to "add" environment vars but when called multiple times it discards all previous values.

I say this behavior is unexpected because of the "add" in the method's name and the fact that it is ok to invoke it multiple times (applying either the operator + or +=)

$HTTP["host"] =~ ".+\.soenke\.test$" {
         setenv.add-environment = (
                 "DEBUG" => "128",
         )
 }

$HTTP["host"] =~ "^web\.soenke\.test$" {
         setenv.add-environment = (
                 "CONFIG_PATH" => "/servers/sites/example-web/dev-config",
         )
 }

In this example taken from Bug #1547 the debug value is discarted.

I really hope you understand the need for such a feature and, in case you don't, I expect you to explain why you think it is useless.