ungetc

• Class methods (2)
• new
• open
• Instance methods (26)
• bytes (>= v1_9_1_378)
• each
• each_byte
• each_char (>= v1_9_1_378)
• each_line
• eof
• eof?
• external_encoding (>= v2_4_6)
• getbyte (>= v1_9_1_378)
• getc
• gets
• lineno
• lineno=
• lines (>= v1_9_1_378)
• pos
• read
• readbyte (>= v1_9_1_378)
• readchar
• readline
• readlines
• readpartial (>= v1_9_1_378)
• rewind
• tell
• ungetbyte (>= v1_9_1_378)
• ungetc
• unused

= private
= protected