* error.c: RDoc for subclasses of Exception. [ruby-core:28394]

* cont.c: ditto

* enumerator.c: ditto

* io.c: ditto

* math.c: ditto

* numeric.c: ditto

* proc.c: ditto

* re.c: ditto

* thread.c: ditto

* transcode.c: ditto. Thanks to Run Paint for some of the documentation.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27671 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

transcode.c

@@ -4217,6 +4217,28 @@ ecerr_incomplete_input(VALUE self)
 
 extern void Init_newline(void);
 
+/*
+ *  Document-class: Encoding::UndefinedConversionError
+ *
+ *  Raised by Encoding and String methods when a transcoding operation
+ *  fails.
+ */
+
+/*
+ *  Document-class: Encoding::InvalidByteSequenceError
+ *
+ *  Raised by Encoding and String methods when the string being
+ *  transcoded contains a byte invalid for the either the source or
+ *  target encoding.
+ */
+
+/*
+ *  Document-class: Encoding::ConverterNotFoundError
+ *
+ *  Raised by transcoding methods when a named encoding does not
+ *  correspond with a known converter.
+ */
+
 void
 Init_transcode(void)
 {