io/console: rdoc

* ext/io/console/console.c (io_getch): add rdoc.

* ext/io/console/lib/console/size.rb (IO.console_size): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40911 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/io/console/console.c

@@ -768,6 +768,12 @@ console_dev(VALUE klass)
     return con;
 }
 
+/*
+ * call-seq:
+ *   io.getch(min: nil, time: nil)       -> char
+ *
+ * See IO#getch.
+ */
 static VALUE
 io_getch(int argc, VALUE *argv, VALUE io)
 {

ext/io/console/lib/console/size.rb

@@ -1,3 +1,4 @@
+# fallback to console window size
 def IO.default_console_size
   [
     ENV["LINES"].to_i.nonzero? || 25,
@@ -12,6 +13,7 @@ rescue LoadError
     alias console_size default_console_size
   end
 else
+  # returns console window size
   def IO.console_size
     console.winsize
   rescue NoMethodError