/* Definitions for interface to indent.c Copyright (C) 1985, 1986 Free Software Foundation, Inc. This file is part of GNU Emacs. GNU Emacs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Emacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Emacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* We introduce new member `tab_offset'. We need it because of the existence of wide-column characters. There is a case that the line-break occurs at a wide-column character and the number of colums of the line gets less than width. Example (where W_ stands for a wide-column character): ---------- abcdefgh\\ W_ ---------- To handle this case, we should not calculate the tab offset by tab_offset += width; Instead, we must remember tab_offset of the line. */ struct position { int bufpos; int bytepos; int hpos; int vpos; int prevhpos; int contin; /* Number of characters we have already handled from the before and after strings at this position. */ int ovstring_chars_done; int tab_offset; }; struct position *compute_motion P_ ((int, int, int, int, int, int, int, int, int, int, struct window *)); struct position *vmotion P_ ((int, int, struct window *)); int skip_invisible P_ ((int, int *, int, Lisp_Object)); /* Value of point when current_column was called */ extern int last_known_column_point; /* Functions for dealing with the column cache. */ /* Return true iff the display table DISPTAB specifies the same widths for characters as WIDTHTAB. We use this to decide when to invalidate the buffer's column_cache. */ int disptab_matches_widthtab P_ ((struct Lisp_Char_Table *disptab, struct Lisp_Vector *widthtab)); /* Recompute BUF's width table, using the display table DISPTAB. */ void recompute_width_table P_ ((struct buffer *buf, struct Lisp_Char_Table *disptab));