[ruby/rdoc] Fix full name of known class

Properly set the name of `File::Constants`, which is the only name
with a namespace in `RDoc::KNOWN_CLASSES`, and fixes longstanding bug
that `File::Constants` becomes `File::File::Constants`.

When it is generated by `rb_file_const` in dir.c, `name` is set to the
qualified name as same as `full_name`, and generated in the normal way
in file.c later, already set `full_name` is cleared and `name` will be
constructed from the enclosing namespace and the `name`.  It will
results in duplicated namespace, `File::File::Constants`.

https://github.com/ruby/rdoc/commit/3a8d6df562

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/rdoc/parser/c.rb b/lib/rdoc/parser/c.rb
index 075f4a072b..b1bbf22f16 100644
--- a/lib/rdoc/parser/c.rb
+++ b/lib/rdoc/parser/c.rb
@@ -667,13 +667,14 @@ class RDoc::Parser::C < RDoc::Parser
   ##
   # Finds a RDoc::NormalClass or RDoc::NormalModule for +raw_name+
 
-  def find_class(raw_name, name)
+  def find_class(raw_name, name, base_name = nil)
     unless @classes[raw_name]
       if raw_name =~ /^rb_m/
         container = @top_level.add_module RDoc::NormalModule, name
       else
         container = @top_level.add_class RDoc::NormalClass, name
       end
+      container.name = base_name if base_name
 
       container.record_location @top_level
       @classes[raw_name] = container
@@ -911,7 +912,7 @@ class RDoc::Parser::C < RDoc::Parser
 
     return unless class_name
 
-    class_obj = find_class var_name, class_name
+    class_obj = find_class var_name, class_name, class_name[/::\K[^:]+\z/]
 
     unless class_obj then
       @options.warn 'Enclosing class or module %p is not known' % [const_name]