Rename namespace_regex to namespace_path_regex.

app/models/namespace.rb

@@ -33,8 +33,8 @@ class Namespace < ActiveRecord::Base
     presence: true,
     length: { within: 1..255 },
     exclusion: { in: Gitlab::Blacklist.path },
-    format: { with: Gitlab::Regex.namespace_regex,
-              message: Gitlab::Regex.namespace_regex_message }
+    format: { with: Gitlab::Regex.namespace_path_regex,
+              message: Gitlab::Regex.namespace_path_regex_message }
 
   delegate :name, to: :owner, allow_nil: true, prefix: true
 

app/models/user.rb

@@ -131,8 +131,8 @@ class User < ActiveRecord::Base
     presence: true,
     uniqueness: { case_sensitive: false },
     exclusion: { in: Gitlab::Blacklist.path },
-    format: { with: Gitlab::Regex.namespace_regex,
-              message: Gitlab::Regex.namespace_regex_message }
+    format: { with: Gitlab::Regex.namespace_path_regex,
+              message: Gitlab::Regex.namespace_path_regex_message }
 
   validates :notification_level, inclusion: { in: Notification.notification_levels }, presence: true
   validate :namespace_uniq, if: ->(user) { user.username_changed? }

lib/gitlab/markdown/cross_project_reference.rb

@@ -3,7 +3,7 @@ module Gitlab
     # Common methods for ReferenceFilters that support an optional cross-project
     # reference.
     module CrossProjectReference
-      NAMING_PATTERN  = Gitlab::Regex::NAMESPACE_REGEX_STR
+      NAMING_PATTERN  = Gitlab::Regex::NAMESPACE_PATH_REGEX_STR
       PROJECT_PATTERN = "(?<project>#{NAMING_PATTERN}/#{NAMING_PATTERN})"
 
       # Given a cross-project reference string, get the Project record

lib/gitlab/markdown/user_reference_filter.rb

@@ -22,7 +22,7 @@ module Gitlab
       end
 
       # Pattern used to extract `@user` user references from text
-      USER_PATTERN = /@(?<user>#{Gitlab::Regex::NAMESPACE_REGEX_STR})/
+      USER_PATTERN = /@(?<user>#{Gitlab::Regex::NAMESPACE_PATH_REGEX_STR})/
 
       def call
         replace_text_nodes_matching(USER_PATTERN) do |content|

lib/gitlab/reference_extractor.rb

@@ -85,7 +85,7 @@ module Gitlab
 
     private
 
-    NAME_STR = Gitlab::Regex::NAMESPACE_REGEX_STR
+    NAME_STR = Gitlab::Regex::NAMESPACE_PATH_REGEX_STR
     PROJ_STR = "(?<project>#{NAME_STR}/#{NAME_STR})"
 
     REFERENCE_PATTERN = %r{

lib/gitlab/regex.rb

@@ -2,13 +2,13 @@ module Gitlab
   module Regex
     extend self
 
-    NAMESPACE_REGEX_STR = '(?:[a-zA-Z0-9_\.][a-zA-Z0-9_\-\.]*[a-zA-Z0-9_\-]|[a-zA-Z0-9_])'.freeze
+    NAMESPACE_PATH_REGEX_STR = '(?:[a-zA-Z0-9_\.][a-zA-Z0-9_\-\.]*[a-zA-Z0-9_\-]|[a-zA-Z0-9_])'.freeze
 
-    def namespace_regex
-      @namespace_regex ||= /\A#{NAMESPACE_REGEX_STR}\z/.freeze
+    def namespace_path_regex
+      @namespace_path_regex ||= /\A#{NAMESPACE_PATH_REGEX_STR}\z/.freeze
     end
 
-    def namespace_regex_message
+    def namespace_path_regex_message
       "can contain only letters, digits, '_', '-' and '.'. " \
       "Cannot start with '-' or end in '.'." \
     end

spec/requests/api/users_spec.rb

@@ -145,7 +145,7 @@ describe API::API, api: true  do
       expect(json_response['message']['projects_limit']).
           to eq(['must be greater than or equal to 0'])
       expect(json_response['message']['username']).
-          to eq([Gitlab::Regex.send(:namespace_regex_message)])
+          to eq([Gitlab::Regex.send(:namespace_path_regex_message)])
     end
 
     it "shouldn't available for non admin users" do
@@ -271,7 +271,7 @@ describe API::API, api: true  do
       expect(json_response['message']['projects_limit']).
           to eq(['must be greater than or equal to 0'])
       expect(json_response['message']['username']).
-          to eq([Gitlab::Regex.send(:namespace_regex_message)])
+          to eq([Gitlab::Regex.send(:namespace_path_regex_message)])
     end
 
     context "with existing user" do