debian man page for pack_ungetc

pack_ungetc(3alleg4)						  Allegro manual					      pack_ungetc(3alleg4)

NAME
       pack_ungetc - Moves one single character back to the input buffer. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       int pack_ungetc(int c, PACKFILE *f);

DESCRIPTION
       Puts a character back to the file's input buffer. Like with ungetc from libc, only a single push back is guaranteed.

       Note: pack_fgets internally uses pack_ungetc, so never use pack_ungetc directly after using pack_fgets on a PACKFILE.

RETURN VALUE
       Returns c on success, or EOF on error.

SEE ALSO
       pack_getc(3alleg4), pack_fgets(3alleg4)

Allegro 							   version 4.4.2					      pack_ungetc(3alleg4)