Retrospective commit from 2009-09-27.

[bpt/emacs.git] / src / ChangeLog.bidi

2009-09-27  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (next_element_from_buffer): If called not at line
	beginning, start bidi iteration from line beginning.

	* bidi.c (bidi_paragraph_init): Use
	bidi_overriding_paragraph_direction instead of a literal zero.
	(bidi_initialize): Fix some character types, per Unicode 5.x.
	(bidi_get_type): Abort if called with invalid character code.

	* dispextern.h: Add prototype of bidi_mirror_char.

	* xdisp.c (get_next_display_element): Mirror characters whose
	resolved type is STRONG_R.

2009-09-26  Eli Zaretskii  <eliz@gnu.org>

	* bidi.c (bidi_paragraph_init): Don't set bidi_it->ch_len.  Abort
	if called not at beginning of a new paragraph.
	(bidi_get_next_char_visually): Prepare and use a sentinel iterator
	state when first_elt flag is set.

	* dispextern.h (struct bidi_it): New struct member first_elt.

	* bidi.c (bidi_init_it): Initialize bidi_it->first_elt.
	(bidi_copy_it): Don't copy the first_elt flag.

	* xdisp.c (reseat_1): Initialize bidi_it.first_elt.  Move bidi
	scan start code from here...
	(next_element_from_buffer): ...to here.  Use bidi_it.first_elt
	flag.

2009-09-20  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (reseat_1): Handle position < BEGV.

	* bidi.c (bidi_paragraph_init): Set bidi_it->ch_len.  Handle ZV.
	(bidi_init_it): Don't initialize bidi_it->ch_len.
	(bidi_resolve_explicit_1): Abort if bidi_it->ch_len was not
	initialized.
	(bidi_at_paragraph_end, bidi_resolve_explicit_1)
	(bidi_resolve_weak, bidi_level_of_next_char): Handle bytepos at
	ZV_BYTE.
	(bidi_resolve_explicit_1): Handle position < BEGV.

2009-09-19  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (init_iterator): Call bidi_init_it.  Set
	bidi_it->bytepos if buffer position specified.
	(reseat_1): Don't call bidi_init_it.  Call bidi_paragraph_init
	instead.  Move back to preceding character before the call to
	bidi_get_next_char_visually.

	* bidi.c: Remove all STANDALONE parts.
	(bidi_init_it): Init bidi_it->charpos and bidi_it->bytepos to -1.
	Don't call bidi_paragraph_init.  Change arguments.
	(bidi_paragraph_init): Remove code for negative pos.

	* dispextern.h <bidi_it>: Rename orig_type to type_after_w1 and
	pristine_type to orig_type.

2009-09-12  Eli Zaretskii  <eliz@gnu.org>

	* dispnew.c (direct_output_for_insert): Give up if we are
	reordering bidirectional text.

	* dispextern.h (IT_STACK_SIZE): Enlarge to 5.

	* xdisp.c (display_line): Set row->end and it->start for the next
	row to the next character in logical order.  If we are reordering
	bidi text, push and pop the iterator before and after momentarily
	iterating in logical order.

2009-09-11  Eli Zaretskii  <eliz@gnu.org>

	Note: The following changes were undone on 2009-09-12.

	* xdisp.c (set_iterator_to_next, reseat, reseat_1)
	(reseat_at_next_visible_line_start): Accept additional argument
	force_logical_p; all callers changed.  If force_logical_p is
	non-zero, force iteration in buffer's logical order even in bidi
	buffers.

	* dispnew.c (direct_output_for_insert): Call set_iterator_to_next
	with additional argument zero.

	* dispextern.h (set_iterator_to_next): Now accepts an additional
	argument.

2009-08-29  Eli Zaretskii  <eliz@gnu.org>

	* xdisp.c (set_cursor_from_row): Don't assume glyph->charpos
	increments linearly.
	(try_window_reusing_current_matrix): Don't assume glyph->charpos
	increments linearly.

2009-08-28  Eli Zaretskii  <eliz@gnu.org>

	* bidi.c <bidi_overriding_paragraph_direction>: Default to L2R,
	for now.

2009-08-22  Eli Zaretskii  <eliz@gnu.org>

	* bidi.c (bidi_initialize): staticpro bidi_char_table.
	(bidi_check_type): New function.
	(bidi_cache_iterator_state, bidi_remember_char)
	(bidi_resolve_explicit_1, bidi_resolve_explicit)
	(bidi_resolve_weak, bidi_resolve_neutral)
	(bidi_level_of_next_char): Use it to validate the bidi type
	assigned to the iterator.

2009-08-15  Eli Zaretskii  <eliz@gnu.org>

	* bidi.c (bidi_initialize): Fix initialization of bidi_type_table.

	* xdisp.c (set_iterator_to_next): Fix position setting after call
	to bidi_get_next_char_visually.

2005-12-03  Eli Zaretskii  <eliz@gnu.org>

	* bidi.c: Include stdio.h unconditionally.  Fix and elaborate
	commentary.  Add Copyright blurb.

2004-03-08  Kenichi Handa  <handa@m17n.org>

	* xdisp.c (reseat_1): Call bidi_init_it with a previous position.

	* bidi.c (bidi_init_it): Set bidi_it->ch_len even if POS > 0.

2004-03-04  Kenichi Handa  <handa@m17n.org>

	The following changes are to support for bi-directional text
	display.

	* Makefile.in (obj): Include bidi.o.
	(bidi.o): New target.

	* bidi.c: New file.

	* buffer.h (struct buffer): New member bidi_display_reordering.

	* buffer.c (init_buffer_once): Initialize bidi_display_reordering.
	(syms_of_buffer): Declarations of Lisp variables
	default-bidi-display-reordering and bidi-display-reordering.

	* dispextern.h (BIDI_MAXLEVEL): New macro.
	(bidi_type_t, bidi_dir_t): New types.
	(bidi_saved_info, bidi_stack, bidi_it): New structs.
	(struct it): New members bidi_p and bidi_it.
	(bidi_init_it): Extern it.
	(bidi_get_next_char_visually): Extern it.

	* dispnew.c (direct_output_forward_char): Give up if we need bidi
	processing or buffer's direction is right-to-left.

	* xdisp.c (init_iterator): Initialize it->bidi_p.
	(reseat_1): Cal bidi_init_it and bidi_get_next_char_visually if
	necessary.
	(set_iterator_to_next): Cal bidi_get_next_char_visually if
	necessary.


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