From 3214cac153166c3baaca153f1ed2241d917b8424 Mon Sep 17 00:00:00 2001
From: Ben Hollis <ben@benhollis.net>
Date: Fri, 21 Dec 2012 18:25:49 -0800
Subject: [PATCH] Make link_to ignore (and preserve) query string and anchor in
 URLs/paths.

---
 middleman-more/features/helpers_link_to.feature     | 13 +++++++++++++
 .../core_extensions/default_helpers.rb              | 12 ++++++++----
 2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/middleman-more/features/helpers_link_to.feature b/middleman-more/features/helpers_link_to.feature
index 990e7e8a..3ecc0895 100644
--- a/middleman-more/features/helpers_link_to.feature
+++ b/middleman-more/features/helpers_link_to.feature
@@ -91,3 +91,16 @@ Feature: link_to helper
     When I go to "/link_to.html"
     Then I should see '<a href="/foo/needs_index.html">Needs Index</a>'
 
+  Scenario: link_to preserves query string and anchor and isn't messed up by them
+    Given a fixture app "indexable-app"
+    And a file named "source/link_to.html.erb" with:
+    """
+    <%= link_to "Needs Index Anchor", "/needs_index.html#foo" %>
+    <%= link_to "Needs Index Query", "/needs_index.html?foo" %>
+    <%= link_to "Needs Index Query and Anchor", "/needs_index.html?foo#foo" %>
+    """
+    And the Server is running at "indexable-app"
+    When I go to "/link_to/"
+    Then I should see '<a href="/needs_index/#foo">Needs Index Anchor</a>'
+    Then I should see '<a href="/needs_index/?foo">Needs Index Query</a>'
+    Then I should see '<a href="/needs_index/?foo#foo">Needs Index Query and Anchor</a>'
diff --git a/middleman-more/lib/middleman-more/core_extensions/default_helpers.rb b/middleman-more/lib/middleman-more/core_extensions/default_helpers.rb
index b9b5076e..8da2072a 100644
--- a/middleman-more/lib/middleman-more/core_extensions/default_helpers.rb
+++ b/middleman-more/lib/middleman-more/core_extensions/default_helpers.rb
@@ -130,11 +130,13 @@ module Middleman
               # Handle relative urls
               current_source_dir = Pathname('/' + current_resource.path).dirname
 
-              path = Pathname(url)
+              uri = URI(url)
+              url_path = uri.path
 
-              url = current_source_dir.join(path).to_s if path.relative?
+              path = Pathname(url_path)
+              url_path = current_source_dir.join(path).to_s if path.relative?
 
-              resource = sitemap.find_resource_by_path(url)
+              resource = sitemap.find_resource_by_path(url_path)
 
               # Allow people to turn on relative paths for all links with set :relative_links, true
               # but still override on a case by case basis with the :relative parameter.
@@ -159,7 +161,9 @@ module Middleman
                   new_url = resource.url
                 end
 
-                args[url_arg_index] = new_url
+                uri.path = new_url
+
+                args[url_arg_index] = uri.to_s
               else
                 raise "No resource exists at #{url}" if relative
               end