simplify regexp

Author: gjtorikian

lib/html_pipeline/node_filter/mention_filter.rb

@@ -115,8 +115,8 @@ def link_to_mentioned_user(base_url, login)
         result[:mentioned_usernames] |= [login]
 
         url = base_url.dup
-        excluded_prefixes = [%r{[/~]\z}, %r{[/@]\z}]
-        url << "/" unless excluded_prefixes.any? { |excluded_prefix| excluded_prefix.match?(url) }
+        excluded_prefixes = %r{[/(?:~|@]\z}
+        url << "/" unless excluded_prefixes.match?(url)
 
         "<a href=\"#{url << login}\" class=\"user-mention\">" \
           "@#{login}" \

lib/html_pipeline/node_filter/team_mention_filter.rb

@@ -94,8 +94,8 @@ def link_to_mentioned_team(base_url, org, team)
         result[:mentioned_teams] |= [team]
 
         url = base_url.dup
-        excluded_prefixes = [%r{[/~]\z}, %r{[/@]\z}]
-        url << "/" unless excluded_prefixes.any? { |excluded_prefix| excluded_prefix.match?(url) }
+        excluded_prefixes = %r{[/(?:~|@]\z}
+        url << "/" unless excluded_prefixes.match?(url)
 
         "<a href=\"#{url << org}/#{team}\" class=\"team-mention\">" \
           "@#{org}/#{team}" \