Fix for bounce not working in preprocess and filter blocks

lib/landline/path.rb

@@ -118,7 +118,10 @@ module Landline
     def run_filters(request)
       proccontext = get_context(request)
       @filters.each do |filter|
-        return false unless proccontext.instance_exec(request, &filter)
+        output = catch(:break) do
+          proccontext.instance_exec(request, &filter)
+        end
+        return false unless output
       end
       true
     end
@@ -128,8 +131,13 @@ module Landline
     def run_preprocessors(request)
       proccontext = get_context(request)
       @preprocessors.each do |preproc|
+        output = catch(:break) do
           proccontext.instance_exec(request, &preproc)
+          true
         end
+        return false unless output
+      end
+      true
     end
 
     # Append postprocessors to request
@@ -146,7 +154,8 @@ module Landline
     def process_wrapped(request)
       return false unless run_filters(request)
 
-      run_preprocessors(request)
+      return false unless run_preprocessors(request)
+
       enqueue_postprocessors(request)
       @children.each do |x|
         value = x.go(request)
@@ -155,7 +164,7 @@ module Landline
       value = index(request)
       return exit_stack(request, value) if value
 
-      @bounce ? exit_stack(request) : _die(404)
+      notfound(request)
     rescue StandardError => e
       _die(request, 500, backtrace: [e.to_s] + e.backtrace)
     end
@@ -167,6 +176,11 @@ module Landline
       response
     end
 
+    # Exit with failure or throw 404
+    def notfound(request)
+      @bounce ? exit_stack(request) : _die(request, 404)
+    end
+
     # Try to perform indexing on the path if possible
     # @param request [Landline::Request]
     # @return [Boolean] true if indexing succeeded