HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| d427b66a JB |
1 | /* Definitions for interface to indent.c |
| 2 | Copyright (C) 1985, 1986 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | This file is part of GNU Emacs. | |
| 5 | ||
| 6 | GNU Emacs is free software; you can redistribute it and/or modify | |
| 7 | it under the terms of the GNU General Public License as published by | |
| 7c938215 | 8 | the Free Software Foundation; either version 2, or (at your option) |
| d427b66a JB |
9 | any later version. |
| 10 | ||
| 11 | GNU Emacs is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | GNU General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU General Public License | |
| 17 | along with GNU Emacs; see the file COPYING. If not, write to | |
| 3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ | |
| d427b66a | 20 | |
| fafd594b KH |
21 | /* We introduce new member `tab_offset'. We need it because of the |
| 22 | existence of wide-column characters. There is a case that the | |
| 23 | line-break occurs at a wide-column character and the number of | |
| 24 | colums of the line gets less than width. | |
| 25 | ||
| 26 | Example (where W_ stands for a wide-column character): | |
| 27 | ---------- | |
| 28 | abcdefgh\\ | |
| 177c0ea7 | 29 | W_ |
| fafd594b KH |
30 | ---------- |
| 31 | ||
| 177c0ea7 | 32 | To handle this case, we should not calculate the tab offset by |
| fafd594b KH |
33 | tab_offset += width; |
| 34 | ||
| 177c0ea7 | 35 | Instead, we must remember tab_offset of the line. |
| fafd594b KH |
36 | |
| 37 | */ | |
| d427b66a JB |
38 | |
| 39 | struct position | |
| 40 | { | |
| 41 | int bufpos; | |
| ac98710c | 42 | int bytepos; |
| d427b66a JB |
43 | int hpos; |
| 44 | int vpos; | |
| 45 | int prevhpos; | |
| 46 | int contin; | |
| cf5db374 RS |
47 | /* Number of characters we have already handled |
| 48 | from the before and after strings at this position. */ | |
| 49 | int ovstring_chars_done; | |
| fafd594b | 50 | int tab_offset; |
| d427b66a JB |
51 | }; |
| 52 | ||
| d3c92eee GM |
53 | struct position *compute_motion P_ ((int, int, int, int, int, int, int, |
| 54 | int, int, int, struct window *)); | |
| 55 | struct position *vmotion P_ ((int, int, struct window *)); | |
| 56 | int skip_invisible P_ ((int, int *, int, Lisp_Object)); | |
| d427b66a JB |
57 | |
| 58 | /* Value of point when current_column was called */ | |
| 59 | extern int last_known_column_point; | |
| 63dec5bd JB |
60 | |
| 61 | /* Functions for dealing with the column cache. */ | |
| 62 | ||
| 63 | /* Return true iff the display table DISPTAB specifies the same widths | |
| 64 | for characters as WIDTHTAB. We use this to decide when to | |
| 65 | invalidate the buffer's column_cache. */ | |
| d3c92eee GM |
66 | int disptab_matches_widthtab P_ ((struct Lisp_Char_Table *disptab, |
| 67 | struct Lisp_Vector *widthtab)); | |
| 63dec5bd JB |
68 | |
| 69 | /* Recompute BUF's width table, using the display table DISPTAB. */ | |
| d3c92eee GM |
70 | void recompute_width_table P_ ((struct buffer *buf, |
| 71 | struct Lisp_Char_Table *disptab)); | |
| 72 | ||
| 73 | ||
| ab5796a9 MB |
74 | /* arch-tag: f9feb373-5bff-4f4f-9198-94805d00cfd7 |
| 75 | (do not change this comment) */ |