Version changed to 1.6.0pre.

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Copyright years udpated.

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(run_rule): Fix checking of glyph availability.

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(register_device_library): Preprend M17N_MODULE_DIR
to the module file name.

(load_external_module): Preprend M17N_MODULE_DIR to the
module file name.

(load_charset): Check the return value of fgets.

Build modules dynamically loaded with
-avoid-version and no -version-info.

(M17N_BINARY_VERSION): New variable.
(M17N_MODULE_DIR): New variable.  AC_SUBST it.

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(Greek, Hindi): Fixed.

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(run_flt): Set mflt_try_otf to rfont->driver->try_otf.
(mdraw__init): Set mflt_enable_new_feature to 1.

(ft_try_otf): New function.
(mfont__ft_driver): Set ft_try_otf.

(struct MFontDriver): New member try_otf.

(xft_driver): Set xft_try_otf.
(xft_try_otf): New function.

(mflt_enable_new_feature): Extern it.
(mflt_try_otf): Extern it.

(load_category_table): If mflt_enable_new_feature is
zero, return NULL for such categories that require the new
feature.
(parse_otf_command): If mflt_enable_new_feature is zero, return
-1.
(load_otf_command): Fix previous change.
(load_flt): Check the return value of load_category_table.
(try_otf): Renamed from run_otf_category.  Call mflt_try_otf
instead of font->drive_otf.
(run_command): Call try_otf instead of run_otf_category.
(m17n_init_flt): Initialize mflt_enable_new_feature to 0,
mflt_try_otf to NULL.
(mflt_enable_new_feature): New variable.
(mflt_try_otf): New variable.

(run_otf_category): Fix previous change.

(parse_otf_command): Handle ":otf?".
(run_otf_category): If not features are specified, reset category
codes.
(run_command): On copy, don't re-calculate a category code.

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(decode_packed_otf_tag): Cancel previous change.

(decode_packed_otf_tag): Re-calculate category code only if some
feature is applied.

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(run_stages): Reset category code if category-table
is changed.
(mflt_run): Don't set category code here.
(decode_packed_otf_tag): If no feature is applied, re-calculate
category code.
(run_command): On copy, don't re-calculate a category code.

(run_stages): Fix previous change.
(mflt_run): Cancel previous change.

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(run_stages): Reset category code if category-table
is changed.
(mflt_run): Don't set category code here.

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(run_command): Don't set ENCODED and MEASURED of separator.

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(mflt_find): If FONT is specified but no flt is
found, return NULL.

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(load_otf_command): Check 4th char against '?'.
(load_command): Likewise.
(decode_packed_otf_tag): New arg CTX.  If CTX->in == gstring,
update CTX->encoded.  Caller changed.

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(ft_drive_otf): Check if OUT is null or not.
(ft_drive_otf): Call OTF_drive_gsub_with_log and
OTF_drive_gpos_with_log.  Record the applied feature in
g->g.internal.

(mfont__get_glyph_id): Encode g->c instead of g->code.

(MAKE_COMBINING_CODE_BY_CLASS)
(COMBINING_BY_CLASS_P, COMBINING_CODE_CLASS)
(MAKE_PRECOMPUTED_COMBINDING_CODE, COMBINING_PRECOMPUTED_P):
Delete externs..
(PACK_OTF_TAG): Extern it.

(reorder_combining_chars): Delete it.

(mflt_font_id): Use type MFLFont.
(mflt_iterate_otf_feature): Likewise.

(enum FontLayoutCmdType): New member
FontLayoutCmdTypeOTFCategory.
(FontLayoutFeatureTable): New type.
(FontLayoutCategory): New members feature_table_size and
feature_table.
(load_category_table): Handle feature_table.
(unref_category_table): Likewise.
(load_otf_command): Handle FontLayoutCmdTypeOTFCategory.
(load_command): Likewise.
(free_flt_command): Likewise.

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(run_flt): Update category code of each glyph.

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(ft_drive_otf): Don't accumulate anchor adjustments.

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Check if the OTF library has OTF_drive_gpos2 ().

(ft_drive_otf): Use OTF_drive_gpos2 if possible.

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(mdebug_flag): New variable.
(mfont__lookup_fontset): Print debug info.

(m17n_init_core): Call SET_DEBUG_FLAG for
MDEBUG_FONTSET.

(enum MDebugFlag): Add MDEBUG_FONTSET.

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(mscript__from_otf_tag): Adjusted for the new format
of the database <standard script unicode>.

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(check_version): Fix the check.

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(surrounding_pos): New arg *pos.
(integer_value): Fix handling of "@+0".
(take_action_list): Adjusted for the change of surrounding_pos.

Fix previous change.

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Version changed to 1.6.0.
(API_VERSION): Changed to 4.0.4.

Docstring updated.

(mflt_iterate_otf_feature, mflt_font_id): Extern them.

(FontLayoutCategory): New typedef.
(FontLayoutStage): Type of the member `category' changed.
(struct _MFLT): Type of the member `coverage' changed.  New member
need_config and font_id.
(apply_otf_feature): New function.
(load_category_table): New arg FONT.  If FONT is non-NULL, call
apply_otf_feature.  Setup category->definition.
(ref_category_table): New macro.
(unref_category_table): New function.
(load_flt): Adjusted for the type change of category.
(free_flt_stage): New arg FLT.
(list_flt): Adjusted for the type change of category.
(run_stages): Adjusted for the type change of category.
(configure_category, configure_flt): New function.
(m17n_init_flt): Initialize mflt_iterate_otf_feature and
mflt_font_id to NULL.
(mflt_get): Skip the heading configured FLTs.
(mflt_find): Likewise.  If necessary, configure the found flt.
(mflt_run): Handle mflt_iterate_otf_feature and mflt_font_id.
Adjusted for the type change of category.
(mflt_iterate_otf_feature, mflt_font_id): New variable.

Docstring updated.

(xfont_open): Set rfont->id.
(xft_driver): Set xft_iterate_otf_feature.
(xft_open): Set rfont->id.
(xft_iterate_otf_feature): New function.

(struct MRealizedFont): New member id.
(struct MFontDriver): New member iterate_otf_feature.

(mfont__get_glyph_id): Pay attention to. mfont->source.

(ft_open, ft_encapsulate): Set rfont->id.
(get_otf): New funcition.
(ft_check_otf, ft_drive_otf): Use get_otf.
(iterate_callback, ft_iterate_otf_feature): New functions.
(mfont__ft_driver): Set ft_iterate_otf_feature.

Docstring updated.
(font_id): New function.
(run_flt): Set mflt_font_id and mflt_iterate_otf_feature before
calling mflt_run.

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(load_flt): Check the return value of load_category_table.

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(run_otf): Clear combining code for glyphs whose
positions are adjusted by GPOS table.

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(M17NLIB_PATCH_LEVEL):  Changed to 5.
(M17NLIB_VERSION_NAME): Changed to "1.5.5".

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Fix previous change.

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Add AC_CONFIG_MACRO_DIR([m4]).  Update by autoupdate program.

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Add AC_CONFIG_MACRO_DIR([m4]).

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Simplified by using autoreconf.

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Version changed to 1.5.5.

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(compose_glyph_string): Check if category not Mnil.