Commit | Line | Data |
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d427b66a | 1 | /* Definitions for interface to indent.c |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 2002, 2003, 2004, |
3 | 2005 Free Software Foundation, Inc. | |
d427b66a JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
7c938215 | 9 | the Free Software Foundation; either version 2, or (at your option) |
d427b66a JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
d427b66a | 21 | |
fafd594b KH |
22 | /* We introduce new member `tab_offset'. We need it because of the |
23 | existence of wide-column characters. There is a case that the | |
24 | line-break occurs at a wide-column character and the number of | |
25 | colums of the line gets less than width. | |
26 | ||
27 | Example (where W_ stands for a wide-column character): | |
28 | ---------- | |
29 | abcdefgh\\ | |
177c0ea7 | 30 | W_ |
fafd594b KH |
31 | ---------- |
32 | ||
177c0ea7 | 33 | To handle this case, we should not calculate the tab offset by |
fafd594b KH |
34 | tab_offset += width; |
35 | ||
177c0ea7 | 36 | Instead, we must remember tab_offset of the line. |
fafd594b KH |
37 | |
38 | */ | |
d427b66a JB |
39 | |
40 | struct position | |
41 | { | |
42 | int bufpos; | |
ac98710c | 43 | int bytepos; |
d427b66a JB |
44 | int hpos; |
45 | int vpos; | |
46 | int prevhpos; | |
47 | int contin; | |
cf5db374 RS |
48 | /* Number of characters we have already handled |
49 | from the before and after strings at this position. */ | |
50 | int ovstring_chars_done; | |
fafd594b | 51 | int tab_offset; |
d427b66a JB |
52 | }; |
53 | ||
d3c92eee GM |
54 | struct position *compute_motion P_ ((int, int, int, int, int, int, int, |
55 | int, int, int, struct window *)); | |
56 | struct position *vmotion P_ ((int, int, struct window *)); | |
57 | int skip_invisible P_ ((int, int *, int, Lisp_Object)); | |
d427b66a JB |
58 | |
59 | /* Value of point when current_column was called */ | |
60 | extern int last_known_column_point; | |
63dec5bd JB |
61 | |
62 | /* Functions for dealing with the column cache. */ | |
63 | ||
64 | /* Return true iff the display table DISPTAB specifies the same widths | |
65 | for characters as WIDTHTAB. We use this to decide when to | |
66 | invalidate the buffer's column_cache. */ | |
d3c92eee GM |
67 | int disptab_matches_widthtab P_ ((struct Lisp_Char_Table *disptab, |
68 | struct Lisp_Vector *widthtab)); | |
63dec5bd JB |
69 | |
70 | /* Recompute BUF's width table, using the display table DISPTAB. */ | |
d3c92eee GM |
71 | void recompute_width_table P_ ((struct buffer *buf, |
72 | struct Lisp_Char_Table *disptab)); | |
73 | ||
74 | ||
ab5796a9 MB |
75 | /* arch-tag: f9feb373-5bff-4f4f-9198-94805d00cfd7 |
76 | (do not change this comment) */ |