code.delx.au - gnu-emacs/blob - src/ChangeLog.bidi

   1 2009-11-14  Eli Zaretskii  <eliz@gnu.org>
   2
   3         * xdisp.c (init_iterator, text_outside_line_unchanged_p)
   4         (try_window_id): Rename paragraph_direction to
   5         bidi_paragraph_direction.
   6         (set_cursor_from_row): Handle integer values of `cursor' property
   7         on display strings.
   8
   9         * buffer.c (init_buffer_once, syms_of_buffer): Rename
  10         paragraph_direction to bidi_paragraph_direction.
  11
  12         * buffer.h (struct buffer): Rename paragraph_direction to
  13         bidi_paragraph_direction.
  14
  15 2009-11-07  Eli Zaretskii  <eliz@gnu.org>
  16
  17         * bidi.c (bidi_paragraph_init): Don't overstep end of buffer.
  18         Treat end of buffer as a NEUTRAL_B character.
  19         (bidi_resolve_explicit): Don't special-case ZV when bidi_it->type
  20         is NEUTRAL_B, since bidi_set_paragraph_end no longer sets the
  21         new_paragraph flag.
  22
  23 2009-10-31  Eli Zaretskii  <eliz@gnu.org>
  24
  25         * xdisp.c (display_line): Always extend reversed_p rows to the end
  26         of line.
  27         (set_cursor_from_row): In R2L rows that don't display text, put
  28         the cursor on the rightmost glyph.
  29
  30 2009-10-24  Eli Zaretskii  <eliz@gnu.org>
  31
  32         * xdisp.c (set_cursor_from_row): Fix off-by-one error when
  33         skipping over non-character glyphs at end of a reversed row.
  34
  35         * dispextern.h (struct glyph): The `resolved_level' member needs
  36         only 5 bits, not 6.  The `bidi_type' member needs only 3 bits.
  37         (bidi_type_t): Rearrange so that types that can appear in the
  38         resolved type are at the beginning and have values less than 8.
  39
  40 2009-10-23  Eli Zaretskii  <eliz@gnu.org>
  41
  42         * bidi.c: Include setjmp.h.
  43
  44 2009-10-17  Eli Zaretskii  <eliz@gnu.org>
  45
  46         * dispextern.h (struct glyph): New members resolved_level and
  47         bidi_type.
  48
  49         * xdisp.c (append_glyph, append_composite_glyph)
  50         (produce_image_glyph, append_stretch_glyph): Set them.
  51
  52         * term.c (append_glyph): Ditto.
  53
  54         * xdisp.c (display_line, next_element_from_buffer): Set the glyph
  55         row's reversed_p flag if the paragraph base direction is odd.
  56         (extend_face_to_end_of_line): Don't reverse the glyphs here.
  57
  58         * term.c (append_glyph): Reverse glyphs here.
  59
  60         * bidi.c (bidi_get_next_char_visually): Don't exit early when at
  61         ZV.
  62         (bidi_paragraph_init): Don't step over a newline if at BEGV.
  63
  64 2009-10-16  Eli Zaretskii  <eliz@gnu.org>
  65
  66         * bidi.c (bidi_paragraph_init): Handle empty buffers.
  67
  68 2009-10-10  Eli Zaretskii  <eliz@gnu.org>
  69
  70         * xdisp.c (set_cursor_from_row): Skip over glyphs near end of row
  71         with integer OBJECT even if their CHARPOS is zero.
  72
  73         * bidi.c (bidi_cache_iterator_state): Don't cache NEW_PARAGRAPH.
  74         Abort if someone tries to add a cached state whose position is not
  75         the immediate successor to that of the last cached state.
  76         (bidi_paragraph_init): Don't bail out too early after a reseat.
  77
  78 2009-10-09  Eli Zaretskii  <eliz@gnu.org>
  79
  80         * xdisp.c (text_outside_line_unchanged_p, try_window_id): Disable
  81         optimizations if we are reordering bidirectional text and the
  82         paragraph direction can be affected by the change.
  83
  84 2009-10-08  Eli Zaretskii  <eliz@gnu.org>
  85
  86         * xdisp.c (string_buffer_position_lim): New function.
  87         (string_buffer_position): Most of code moved to
  88         string_buffer_position_lim.  Last argument and return value are
  89         now EMACS_INT; all callers changed.
  90         (set_cursor_from_row): Rewritten to support bidirectional text and
  91         reversed glyph rows.
  92
  93         dispextern.h <string_buffer_position>: Update prototype.
  94
  95 2009-10-07  Eli Zaretskii  <eliz@gnu.org>
  96
  97         * bidi.c (bidi_paragraph_init): Fix initialization of POS.
  98
  99         * dispextern.h (struct glyph_row): New member reversed_p.
 100
 101 2009-10-06  Eli Zaretskii  <eliz@gnu.org>
 102
 103         * buffer.c (syms_of_buffer): Remove DEFVAR_LISP_NOPRO for
 104         default-direction-reversed, default-bidi-display-reordering, and
 105         default-paragraph-direction.
 106
 107 2009-10-05  Eli Zaretskii  <eliz@gnu.org>
 108
 109         * buffer.h (struct buffer): New member paragraph_direction.
 110         * buffer.c (init_buffer_once): Initialize it.
 111         (syms_of_buffer): Declare Lisp variables
 112         default-paragraph-direction and paragraph-direction.
 113
 114         * dispextern.h (struct it): New member paragraph_embedding.
 115         * xdisp.c (init_iterator): Initialize it from the buffer's value
 116         of paragraph-direction.
 117         <Qright_to_left, Qleft_to_right>: New variables.
 118         (syms_of_xdisp): Initialize and staticpro them.
 119         (set_iterator_to_next, next_element_from_buffer): Use the value of
 120         paragraph_embedding to determine the paragraph direction.
 121
 122         * bidi.c (bidi_line_init): Fix second argument to
 123         bidi_set_sor_type.
 124         (bidi_init_it): Initialize paragraph_dir to NEUTRAL_DIR.
 125         (bidi_get_next_char_visually): Record the last character of the
 126         separator in separator_limit, not the character after that.
 127         (bidi_find_paragraph_start): Accept character and byte positions
 128         instead of the whole iterator stricture.  All callers changed.
 129
 130 2009-10-04  Eli Zaretskii  <eliz@gnu.org>
 131
 132         * bidi.c (bidi_at_paragraph_end): Check for paragraph-start if
 133         paragraph-separate failed to match.  Return the length of the
 134         matched separator.
 135         (bidi_line_init): New function.
 136         (bidi_paragraph_init): Use bidi_line_init.  Do nothing if in the
 137         middle of a paragraph-separate sequence.  Don't override existing
 138         paragraph direction if no strong characters found in this
 139         paragraph.  Set separator_limit according to what
 140         bidi_at_paragraph_end returns.  Reset new_paragraph flag when a
 141         new paragraph is found.
 142         (bidi_init_it): Reset separator_limit.
 143
 144         * dispextern.h (struct bidi_it): New member separator_limit.
 145
 146         * bidi.c (bidi_find_paragraph_start): Return the byte position of
 147         the paragraph beginning.
 148
 149         * xdisp.c (set_iterator_to_next): Call bidi_paragraph_init if the
 150         new_paragraph flag is set in the bidi iterator.
 151
 152         * bidi.c (bidi_at_paragraph_end, bidi_find_paragraph_start): Use
 153         the buffer-local value of paragraph-start and paragraph-separate.
 154
 155 2009-10-03  Eli Zaretskii  <eliz@gnu.org>
 156
 157         * bidi.c (bidi_set_paragraph_end): Don't set the new_paragraph
 158         flag in the iterator.
 159         (bidi_init_it): Set the new_paragraph flag.
 160         (bidi_at_paragraph_end): Arguments are now character and byte
 161         position of the next character.  All callers changed.
 162         (bidi_resolve_explicit): Don't call bidi_at_paragraph_end, and
 163         don't behave as if at paragraph end if it returns true.
 164         (bidi_get_next_char_visually): Don't call bidi_paragraph_init if
 165         new_paragraph flags is set.  Set new_paragraph flag when at end of
 166         a paragraph.
 167         <fallback_paragraph_start_re, fallback_paragraph_separate_re>: New
 168         variables.
 169         <Qparagraph_start, Qparagraph_separate>: New variables.
 170         (bidi_initialize): Initialize and staticpro them.
 171
 172         * dispextern.h <struct bidi_it>: New element paragraph_dir.  Make
 173         positional elements EMACS_INT.
 174
 175         * bidi.c <bidi_overriding_paragraph_direction>: Delete.
 176
 177 2009-09-28  Eli Zaretskii  <eliz@gnu.org>
 178
 179         * bidi.c (bidi_init_it): Initialize charpos, bytepos, and
 180         first_elt before calling bidi_set_paragraph_end.
 181         (bidi_resolve_explicit): Don't call bidi_set_paragraph_end at
 182         EOB.
 183         (bidi_at_paragraph_end): Don't set new_paragraph flag at EOB.
 184         (bidi_get_type): Accept an additional argument OVERRIDE, per UAX#9
 185         "Explicit Overrides".  All callers changed.
 186
 187 2009-09-27  Eli Zaretskii  <eliz@gnu.org>
 188
 189         * xdisp.c (next_element_from_buffer): If called not at line
 190         beginning, start bidi iteration from line beginning.
 191
 192         * bidi.c (bidi_paragraph_init): Use
 193         bidi_overriding_paragraph_direction instead of a literal zero.
 194         (bidi_initialize): Fix some character types, per Unicode 5.x.
 195         (bidi_get_type): Abort if called with invalid character code.
 196
 197         * dispextern.h: Add prototype of bidi_mirror_char.
 198
 199         * xdisp.c (get_next_display_element): Mirror characters whose
 200         resolved type is STRONG_R.
 201
 202 2009-09-26  Eli Zaretskii  <eliz@gnu.org>
 203
 204         * bidi.c (bidi_paragraph_init): Don't set bidi_it->ch_len.  Abort
 205         if called not at beginning of a new paragraph.
 206         (bidi_get_next_char_visually): Prepare and use a sentinel iterator
 207         state when first_elt flag is set.
 208
 209         * dispextern.h (struct bidi_it): New struct member first_elt.
 210
 211         * bidi.c (bidi_init_it): Initialize bidi_it->first_elt.
 212         (bidi_copy_it): Don't copy the first_elt flag.
 213
 214         * xdisp.c (reseat_1): Initialize bidi_it.first_elt.  Move bidi
 215         scan start code from here...
 216         (next_element_from_buffer): ...to here.  Use bidi_it.first_elt
 217         flag.
 218
 219 2009-09-20  Eli Zaretskii  <eliz@gnu.org>
 220
 221         * xdisp.c (reseat_1): Handle position < BEGV.
 222
 223         * bidi.c (bidi_paragraph_init): Set bidi_it->ch_len.  Handle ZV.
 224         (bidi_init_it): Don't initialize bidi_it->ch_len.
 225         (bidi_resolve_explicit_1): Abort if bidi_it->ch_len was not
 226         initialized.
 227         (bidi_at_paragraph_end, bidi_resolve_explicit_1)
 228         (bidi_resolve_weak, bidi_level_of_next_char): Handle bytepos at
 229         ZV_BYTE.
 230         (bidi_resolve_explicit_1): Handle position < BEGV.
 231
 232 2009-09-19  Eli Zaretskii  <eliz@gnu.org>
 233
 234         * xdisp.c (init_iterator): Call bidi_init_it.  Set
 235         bidi_it->bytepos if buffer position specified.
 236         (reseat_1): Don't call bidi_init_it.  Call bidi_paragraph_init
 237         instead.  Move back to preceding character before the call to
 238         bidi_get_next_char_visually.
 239
 240         * bidi.c: Remove all STANDALONE parts.
 241         (bidi_init_it): Init bidi_it->charpos and bidi_it->bytepos to -1.
 242         Don't call bidi_paragraph_init.  Change arguments.
 243         (bidi_paragraph_init): Remove code for negative pos.
 244
 245         * dispextern.h <bidi_it>: Rename orig_type to type_after_w1 and
 246         pristine_type to orig_type.
 247
 248 2009-09-12  Eli Zaretskii  <eliz@gnu.org>
 249
 250         * dispnew.c (direct_output_for_insert): Give up if we are
 251         reordering bidirectional text.
 252
 253         * dispextern.h (IT_STACK_SIZE): Enlarge to 5.
 254
 255         * xdisp.c (display_line): Set row->end and it->start for the next
 256         row to the next character in logical order.  If we are reordering
 257         bidi text, push and pop the iterator before and after momentarily
 258         iterating in logical order.
 259
 260 2009-09-11  Eli Zaretskii  <eliz@gnu.org>
 261
 262         Note: The following changes were undone on 2009-09-12.
 263
 264         * xdisp.c (set_iterator_to_next, reseat, reseat_1)
 265         (reseat_at_next_visible_line_start): Accept additional argument
 266         force_logical_p; all callers changed.  If force_logical_p is
 267         non-zero, force iteration in buffer's logical order even in bidi
 268         buffers.
 269
 270         * dispnew.c (direct_output_for_insert): Call set_iterator_to_next
 271         with additional argument zero.
 272
 273         * dispextern.h (set_iterator_to_next): Now accepts an additional
 274         argument.
 275
 276 2009-08-29  Eli Zaretskii  <eliz@gnu.org>
 277
 278         * xdisp.c (set_cursor_from_row): Don't assume glyph->charpos
 279         increments linearly.
 280         (try_window_reusing_current_matrix): Don't assume glyph->charpos
 281         increments linearly.
 282
 283 2009-08-28  Eli Zaretskii  <eliz@gnu.org>
 284
 285         * bidi.c <bidi_overriding_paragraph_direction>: Default to L2R,
 286         for now.
 287
 288 2009-08-22  Eli Zaretskii  <eliz@gnu.org>
 289
 290         * bidi.c (bidi_initialize): staticpro bidi_char_table.
 291         (bidi_check_type): New function.
 292         (bidi_cache_iterator_state, bidi_remember_char)
 293         (bidi_resolve_explicit_1, bidi_resolve_explicit)
 294         (bidi_resolve_weak, bidi_resolve_neutral)
 295         (bidi_level_of_next_char): Use it to validate the bidi type
 296         assigned to the iterator.
 297
 298 2009-08-15  Eli Zaretskii  <eliz@gnu.org>
 299
 300         * bidi.c (bidi_initialize): Fix initialization of bidi_type_table.
 301
 302         * xdisp.c (set_iterator_to_next): Fix position setting after call
 303         to bidi_get_next_char_visually.
 304
 305 2005-12-03  Eli Zaretskii  <eliz@gnu.org>
 306
 307         * bidi.c: Include stdio.h unconditionally.  Fix and elaborate
 308         commentary.  Add Copyright blurb.
 309
 310 2004-03-08  Kenichi Handa  <handa@m17n.org>
 311
 312         * xdisp.c (reseat_1): Call bidi_init_it with a previous position.
 313
 314         * bidi.c (bidi_init_it): Set bidi_it->ch_len even if POS > 0.
 315
 316 2004-03-04  Kenichi Handa  <handa@m17n.org>
 317
 318         The following changes are to support bidirectional text display.
 319
 320         * Makefile.in (obj): Include bidi.o.
 321         (bidi.o): New target.
 322
 323         * bidi.c: New file.
 324
 325         * buffer.h (struct buffer): New member bidi_display_reordering.
 326
 327         * buffer.c (init_buffer_once): Initialize bidi_display_reordering.
 328         (syms_of_buffer): Declarations of Lisp variables
 329         default-bidi-display-reordering and bidi-display-reordering.
 330
 331         * dispextern.h (BIDI_MAXLEVEL): New macro.
 332         (bidi_type_t, bidi_dir_t): New types.
 333         (bidi_saved_info, bidi_stack, bidi_it): New structs.
 334         (struct it): New members bidi_p and bidi_it.
 335         (bidi_init_it): Extern it.
 336         (bidi_get_next_char_visually): Extern it.
 337
 338         * dispnew.c (direct_output_forward_char): Give up if we need bidi
 339         processing or buffer's direction is right-to-left.
 340
 341         * xdisp.c (init_iterator): Initialize it->bidi_p.
 342         (reseat_1): Cal bidi_init_it and bidi_get_next_char_visually if
 343         necessary.
 344         (set_iterator_to_next): Cal bidi_get_next_char_visually if
 345         necessary.
 346
 347
 348 ;; Local Variables:
 349 ;; coding: utf-8
 350 ;; add-log-time-zone-rule: t
 351 ;; End:
 352
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