1 2009-10-17 Eli Zaretskii <eliz@gnu.org>
3 * dispextern.h (struct glyph): New members resolved_level and
6 * xdisp.c (append_glyph, append_composite_glyph)
7 (produce_image_glyph, append_stretch_glyph): Set them.
9 * term.c (append_glyph): Ditto.
11 * xdisp.c (display_line, next_element_from_buffer): Set the glyph
12 row's reversed_p flag if the paragraph base direction is odd.
13 (extend_face_to_end_of_line): Don't reverse the glyphs here.
15 * term.c (append_glyph): Reverse glyphs here.
17 * bidi.c (bidi_get_next_char_visually): Don't exit early when at
19 (bidi_paragraph_init): Don't step over a newline if at BEGV.
21 2009-10-16 Eli Zaretskii <eliz@gnu.org>
23 * bidi.c (bidi_paragraph_init): Handle empty buffers.
25 2009-10-10 Eli Zaretskii <eliz@gnu.org>
27 * xdisp.c (set_cursor_from_row): Skip over glyphs near end of row
28 with integer OBJECT even if their CHARPOS is zero.
30 * bidi.c (bidi_cache_iterator_state): Don't cache NEW_PARAGRAPH.
31 Abort if someone tries to add a cached state whose position is not
32 the immediate successor to that of the last cached state.
33 (bidi_paragraph_init): Don't bail out too early after a reseat.
35 2009-10-09 Eli Zaretskii <eliz@gnu.org>
37 * xdisp.c (text_outside_line_unchanged_p, try_window_id): Disable
38 optimizations if we are reordering bidirectional text and the
39 paragraph direction can be affected by the change.
41 2009-10-08 Eli Zaretskii <eliz@gnu.org>
43 * xdisp.c (string_buffer_position_lim): New function.
44 (string_buffer_position): Most of code moved to
45 string_buffer_position_lim. Last argument and return value are
46 now EMACS_INT; all callers changed.
47 (set_cursor_from_row): Rewritten to support bidirectional text and
50 dispextern.h <string_buffer_position>: Update prototype.
52 2009-10-07 Eli Zaretskii <eliz@gnu.org>
54 * bidi.c (bidi_paragraph_init): Fix initialization of POS.
56 * dispextern.h (struct glyph_row): New member reversed_p.
58 2009-10-06 Eli Zaretskii <eliz@gnu.org>
60 * buffer.c (syms_of_buffer): Remove DEFVAR_LISP_NOPRO for
61 default-direction-reversed, default-bidi-display-reordering, and
62 default-paragraph-direction.
64 2009-10-05 Eli Zaretskii <eliz@gnu.org>
66 * buffer.h (struct buffer): New member paragraph_direction.
67 * buffer.c (init_buffer_once): Initialize it.
68 (syms_of_buffer): Declare Lisp variables
69 default-paragraph-direction and paragraph-direction.
71 * dispextern.h (struct it): New member paragraph_embedding.
72 * xdisp.c (init_iterator): Initialize it from the buffer's value
73 of paragraph-direction.
74 <Qright_to_left, Qleft_to_right>: New variables.
75 (syms_of_xdisp): Initialize and staticpro them.
76 (set_iterator_to_next, next_element_from_buffer): Use the value of
77 paragraph_embedding to determine the paragraph direction.
79 * bidi.c (bidi_line_init): Fix second argument to
81 (bidi_init_it): Initialize paragraph_dir to NEUTRAL_DIR.
82 (bidi_get_next_char_visually): Record the last character of the
83 separator in separator_limit, not the character after that.
84 (bidi_find_paragraph_start): Accept character and byte positions
85 instead of the whole iterator stricture. All callers changed.
87 2009-10-04 Eli Zaretskii <eliz@gnu.org>
89 * bidi.c (bidi_at_paragraph_end): Check for paragraph-start if
90 paragraph-separate failed to match. Return the length of the
92 (bidi_line_init): New function.
93 (bidi_paragraph_init): Use bidi_line_init. Do nothing if in the
94 middle of a paragraph-separate sequence. Don't override existing
95 paragraph direction if no strong characters found in this
96 paragraph. Set separator_limit according to what
97 bidi_at_paragraph_end returns. Reset new_paragraph flag when a
98 new paragraph is found.
99 (bidi_init_it): Reset separator_limit.
101 * dispextern.h (struct bidi_it): New member separator_limit.
103 * bidi.c (bidi_find_paragraph_start): Return the byte position of
104 the paragraph beginning.
106 * xdisp.c (set_iterator_to_next): Call bidi_paragraph_init if the
107 new_paragraph flag is set in the bidi iterator.
109 * bidi.c (bidi_at_paragraph_end, bidi_find_paragraph_start): Use
110 the buffer-local value of paragraph-start and paragraph-separate.
112 2009-10-03 Eli Zaretskii <eliz@gnu.org>
114 * bidi.c (bidi_set_paragraph_end): Don't set the new_paragraph
115 flag in the iterator.
116 (bidi_init_it): Set the new_paragraph flag.
117 (bidi_at_paragraph_end): Arguments are now character and byte
118 position of the next character. All callers changed.
119 (bidi_resolve_explicit): Don't call bidi_at_paragraph_end, and
120 don't behave as if at paragraph end if it returns true.
121 (bidi_get_next_char_visually): Don't call bidi_paragraph_init if
122 new_paragraph flags is set. Set new_paragraph flag when at end of
124 <fallback_paragraph_start_re, fallback_paragraph_separate_re>: New
126 <Qparagraph_start, Qparagraph_separate>: New variables.
127 (bidi_initialize): Initialize and staticpro them.
129 * dispextern.h <struct bidi_it>: New element paragraph_dir. Make
130 positional elements EMACS_INT.
132 * bidi.c <bidi_overriding_paragraph_direction>: Delete.
134 2009-09-28 Eli Zaretskii <eliz@gnu.org>
136 * bidi.c (bidi_init_it): Initialize charpos, bytepos, and
137 first_elt before calling bidi_set_paragraph_end.
138 (bidi_resolve_explicit): Don't call bidi_set_paragraph_end at
140 (bidi_at_paragraph_end): Don't set new_paragraph flag at EOB.
141 (bidi_get_type): Accept an additional argument OVERRIDE, per UAX#9
142 "Explicit Overrides". All callers changed.
144 2009-09-27 Eli Zaretskii <eliz@gnu.org>
146 * xdisp.c (next_element_from_buffer): If called not at line
147 beginning, start bidi iteration from line beginning.
149 * bidi.c (bidi_paragraph_init): Use
150 bidi_overriding_paragraph_direction instead of a literal zero.
151 (bidi_initialize): Fix some character types, per Unicode 5.x.
152 (bidi_get_type): Abort if called with invalid character code.
154 * dispextern.h: Add prototype of bidi_mirror_char.
156 * xdisp.c (get_next_display_element): Mirror characters whose
157 resolved type is STRONG_R.
159 2009-09-26 Eli Zaretskii <eliz@gnu.org>
161 * bidi.c (bidi_paragraph_init): Don't set bidi_it->ch_len. Abort
162 if called not at beginning of a new paragraph.
163 (bidi_get_next_char_visually): Prepare and use a sentinel iterator
164 state when first_elt flag is set.
166 * dispextern.h (struct bidi_it): New struct member first_elt.
168 * bidi.c (bidi_init_it): Initialize bidi_it->first_elt.
169 (bidi_copy_it): Don't copy the first_elt flag.
171 * xdisp.c (reseat_1): Initialize bidi_it.first_elt. Move bidi
172 scan start code from here...
173 (next_element_from_buffer): ...to here. Use bidi_it.first_elt
176 2009-09-20 Eli Zaretskii <eliz@gnu.org>
178 * xdisp.c (reseat_1): Handle position < BEGV.
180 * bidi.c (bidi_paragraph_init): Set bidi_it->ch_len. Handle ZV.
181 (bidi_init_it): Don't initialize bidi_it->ch_len.
182 (bidi_resolve_explicit_1): Abort if bidi_it->ch_len was not
184 (bidi_at_paragraph_end, bidi_resolve_explicit_1)
185 (bidi_resolve_weak, bidi_level_of_next_char): Handle bytepos at
187 (bidi_resolve_explicit_1): Handle position < BEGV.
189 2009-09-19 Eli Zaretskii <eliz@gnu.org>
191 * xdisp.c (init_iterator): Call bidi_init_it. Set
192 bidi_it->bytepos if buffer position specified.
193 (reseat_1): Don't call bidi_init_it. Call bidi_paragraph_init
194 instead. Move back to preceding character before the call to
195 bidi_get_next_char_visually.
197 * bidi.c: Remove all STANDALONE parts.
198 (bidi_init_it): Init bidi_it->charpos and bidi_it->bytepos to -1.
199 Don't call bidi_paragraph_init. Change arguments.
200 (bidi_paragraph_init): Remove code for negative pos.
202 * dispextern.h <bidi_it>: Rename orig_type to type_after_w1 and
203 pristine_type to orig_type.
205 2009-09-12 Eli Zaretskii <eliz@gnu.org>
207 * dispnew.c (direct_output_for_insert): Give up if we are
208 reordering bidirectional text.
210 * dispextern.h (IT_STACK_SIZE): Enlarge to 5.
212 * xdisp.c (display_line): Set row->end and it->start for the next
213 row to the next character in logical order. If we are reordering
214 bidi text, push and pop the iterator before and after momentarily
215 iterating in logical order.
217 2009-09-11 Eli Zaretskii <eliz@gnu.org>
219 Note: The following changes were undone on 2009-09-12.
221 * xdisp.c (set_iterator_to_next, reseat, reseat_1)
222 (reseat_at_next_visible_line_start): Accept additional argument
223 force_logical_p; all callers changed. If force_logical_p is
224 non-zero, force iteration in buffer's logical order even in bidi
227 * dispnew.c (direct_output_for_insert): Call set_iterator_to_next
228 with additional argument zero.
230 * dispextern.h (set_iterator_to_next): Now accepts an additional
233 2009-08-29 Eli Zaretskii <eliz@gnu.org>
235 * xdisp.c (set_cursor_from_row): Don't assume glyph->charpos
237 (try_window_reusing_current_matrix): Don't assume glyph->charpos
240 2009-08-28 Eli Zaretskii <eliz@gnu.org>
242 * bidi.c <bidi_overriding_paragraph_direction>: Default to L2R,
245 2009-08-22 Eli Zaretskii <eliz@gnu.org>
247 * bidi.c (bidi_initialize): staticpro bidi_char_table.
248 (bidi_check_type): New function.
249 (bidi_cache_iterator_state, bidi_remember_char)
250 (bidi_resolve_explicit_1, bidi_resolve_explicit)
251 (bidi_resolve_weak, bidi_resolve_neutral)
252 (bidi_level_of_next_char): Use it to validate the bidi type
253 assigned to the iterator.
255 2009-08-15 Eli Zaretskii <eliz@gnu.org>
257 * bidi.c (bidi_initialize): Fix initialization of bidi_type_table.
259 * xdisp.c (set_iterator_to_next): Fix position setting after call
260 to bidi_get_next_char_visually.
262 2005-12-03 Eli Zaretskii <eliz@gnu.org>
264 * bidi.c: Include stdio.h unconditionally. Fix and elaborate
265 commentary. Add Copyright blurb.
267 2004-03-08 Kenichi Handa <handa@m17n.org>
269 * xdisp.c (reseat_1): Call bidi_init_it with a previous position.
271 * bidi.c (bidi_init_it): Set bidi_it->ch_len even if POS > 0.
273 2004-03-04 Kenichi Handa <handa@m17n.org>
275 The following changes are to support bidirectional text display.
277 * Makefile.in (obj): Include bidi.o.
278 (bidi.o): New target.
282 * buffer.h (struct buffer): New member bidi_display_reordering.
284 * buffer.c (init_buffer_once): Initialize bidi_display_reordering.
285 (syms_of_buffer): Declarations of Lisp variables
286 default-bidi-display-reordering and bidi-display-reordering.
288 * dispextern.h (BIDI_MAXLEVEL): New macro.
289 (bidi_type_t, bidi_dir_t): New types.
290 (bidi_saved_info, bidi_stack, bidi_it): New structs.
291 (struct it): New members bidi_p and bidi_it.
292 (bidi_init_it): Extern it.
293 (bidi_get_next_char_visually): Extern it.
295 * dispnew.c (direct_output_forward_char): Give up if we need bidi
296 processing or buffer's direction is right-to-left.
298 * xdisp.c (init_iterator): Initialize it->bidi_p.
299 (reseat_1): Cal bidi_init_it and bidi_get_next_char_visually if
301 (set_iterator_to_next): Cal bidi_get_next_char_visually if
307 ;; add-log-time-zone-rule: t
310 Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
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