pbm_next_char    6739 src/image.c      while ((c = pbm_next_char (s, end)) != -1 && c_isspace (c))
pbm_next_char    6746 src/image.c          while ((c = pbm_next_char (s, end)) != -1 && c_isdigit (c))
pbm_next_char    6946 src/image.c    		while ((c = pbm_next_char (&p, end)) != -1 && c_isspace (c))