Actually ignore references in code blocks etc.

app/helpers/gitlab_markdown_helper.rb

@@ -41,20 +41,7 @@ module GitlabMarkdownHelper
     fragment.to_html.html_safe
   end
-  def markdown(text, options={})
-    unless @markdown && options == @options
-      @options = options
-
-      options.merge!(
-        # Handled further down the line by Gitlab::Markdown::SanitizationFilter
-        escape_html: false
-      )
-
-      # see https://github.com/vmg/redcarpet#darling-i-packed-you-a-couple-renderers-for-lunch
-      rend = Redcarpet::Render::GitlabHTML.new(self, user_color_scheme_class, options)
-
-      # see https://github.com/vmg/redcarpet#and-its-like-really-simple-to-use
-      @markdown = Redcarpet::Markdown.new(rend,
+  MARKDOWN_OPTIONS = {
     no_intra_emphasis:   true,
     tables:              true,
     fenced_code_blocks:  true,
@@ -63,7 +50,17 @@ module GitlabMarkdownHelper
     space_after_headers: true,
     superscript:         true,
     footnotes:           true
-      )
+  }.freeze
+
+  def markdown(text, options={})
+    unless @markdown && options == @options
+      @options = options
+
+      # see https://github.com/vmg/redcarpet#darling-i-packed-you-a-couple-renderers-for-lunch
+      rend = Redcarpet::Render::GitlabHTML.new(self, user_color_scheme_class, options)
+
+      # see https://github.com/vmg/redcarpet#and-its-like-really-simple-to-use
+      @markdown = Redcarpet::Markdown.new(rend, MARKDOWN_OPTIONS)
     end
     @markdown.render(text).html_safe

lib/gitlab/reference_extractor.rb

 module Gitlab
   # Extract possible GFM references from an arbitrary String for further processing.
   class ReferenceExtractor
-    attr_accessor :project, :current_user, :references
+    attr_accessor :project, :current_user
     def initialize(project, current_user = nil)
       @project = project
@@ -9,48 +9,31 @@ module Gitlab
     end
     def analyze(text)
-      @_text = text.dup
+      references.clear
+      @text = markdown.render(text.dup)
     end
-    def users
-      result = pipeline_result(:user)
-      result.uniq
+    %i(user label issue merge_request snippet commit commit_range).each do |type|
+      define_method("#{type}s") do
+        references[type]
       end
-
-    def labels
-      result = pipeline_result(:label)
-      result.uniq
     end
-    def issues
-      # TODO (rspeicher): What about external issues?
-
-      result = pipeline_result(:issue)
-      result.uniq
-    end
-    def merge_requests
-      result = pipeline_result(:merge_request)
-      result.uniq
+    private
+    def markdown
+      @markdown ||= Redcarpet::Markdown.new(Redcarpet::Render::HTML, GitlabMarkdownHelper::MARKDOWN_OPTIONS)
     end
-    def snippets
-      result = pipeline_result(:snippet)
-      result.uniq
-    end
-    def commits
-      result = pipeline_result(:commit)
-      result.uniq
+    def references
+      @references ||= Hash.new do |references, type|
+        type = type.to_sym
+        return references[type] if references.has_key?(type)
+        references[type] = pipeline_result(type).uniq
       end
-
-    def commit_ranges
-      result = pipeline_result(:commit_range)
-      result.uniq
     end
-    private
-
     # Instantiate and call HTML::Pipeline with a single reference filter type,
     # returning the result
     #
@@ -69,7 +52,7 @@ module Gitlab
       }
       pipeline = HTML::Pipeline.new([filter], context)
-      result = pipeline.call(@_text)
+      result = pipeline.call(@text)
       result[:references][filter_type]
     end

lib/redcarpet/render/gitlab_html.rb

@@ -10,6 +10,8 @@ class Redcarpet::Render::GitlabHTML < Redcarpet::Render::HTML
     @options = options.dup
     @options.reverse_merge!(
+      # Handled further down the line by Gitlab::Markdown::SanitizationFilter
+      escape_html: false
       project: @template.instance_variable_get("@project")
     )

spec/lib/gitlab/reference_extractor_spec.rb

@@ -16,6 +16,26 @@ describe Gitlab::ReferenceExtractor do
     expect(subject.users).to eq([@u_foo, @u_bar, @u_offteam])
   end
+  it 'ignores user mentions inside specific elements' do
+    @u_foo = create(:user, username: 'foo')
+    @u_bar = create(:user, username: 'bar')
+    @u_offteam = create(:user, username: 'offteam')
+
+    project.team << [@u_foo, :reporter]
+    project.team << [@u_bar, :guest]
+
+    subject.analyze(%Q{
+      Inline code: `@foo` 
+
+      Code block:
+
+      ```
+      @bar
+      ```
+    })
+    expect(subject.users).to eq([])
+  end
+
   it 'accesses valid issue objects' do
     @i0 = create(:issue, project: project)
     @i1 = create(:issue, project: project)