buf_prev_char_len 1719 src/buffer.h     return buf_prev_char_len (current_buffer, pos_byte);
buf_prev_char_len  523 src/lread.c    	bytepos -= buf_prev_char_len (b, bytepos);
buf_prev_char_len  536 src/lread.c    	bytepos -= buf_prev_char_len (b, bytepos);
buf_prev_char_len  251 src/marker.c   	  best_above_byte -= buf_prev_char_len (b, best_above_byte);
buf_prev_char_len  404 src/marker.c   	  best_above_byte -= buf_prev_char_len (b, best_above_byte);