From 4e255de9cb83c67ea162cb2a4598ecf61c640574 Mon Sep 17 00:00:00 2001
From: Daniel MacDougall <dmacdougall@gmail.com>
Date: Sun, 9 Oct 2011 03:07:46 -0700
Subject: [PATCH] Automatically add links to images embedded in comments

---
 lib/string_filter.rb | 7 ++++++-
 models/comment.rb    | 3 ++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/lib/string_filter.rb b/lib/string_filter.rb
index de74aa89..24895090 100644
--- a/lib/string_filter.rb
+++ b/lib/string_filter.rb
@@ -8,7 +8,6 @@
 #
 # Possible extensions:
 # * Convert APP-XXX to jira links
-# * Convert an image link (![alt][link] syntax) to a be a link to the image as well
 # * Make @username link to profile pages
 
 module StringFilter
@@ -31,6 +30,12 @@ def link_github_issue(github_username, github_repo)
     end
   end
 
+  # Converts an embedded image (![alt][link]) to also include
+  # a link to the same image
+  def link_embedded_images
+    self.gsub(/!\[.*\]\((.*)\)/) { |match| "[#{match}](#{$1})" }
+  end
+
   def newlines_to_html
     self.gsub("\n", "<br/>")
   end
diff --git a/models/comment.rb b/models/comment.rb
index 1ad669bb..07c7be08 100644
--- a/models/comment.rb
+++ b/models/comment.rb
@@ -18,7 +18,8 @@ def general_comment?() commit_file_id.nil? end
   def file_comment?() !commit_file_id.nil? end
 
   def format
-    text.markdown
+    text.link_embedded_images
+        .markdown
         .replace_shas_with_links(commit.git_repo.name)
   end
 end