(GRUB_UTF16_LOWER_SURROGATE): Likewise.
	(grub_utf16_to_utf8): Likewise.

	written bytes.
	(grub_get_num_of_utf8_bytes): New function.
	(grub_ucs4_to_utf8_alloc): Use grub_get_num_of_utf8_bytes.
	* grub-core/normal/menu_entry.c (run): Convert entry to UTF-8 before
	executing it.
	* include/grub/charset.h (grub_get_num_of_utf8_bytes): New proto.
	(grub_ucs4_to_utf8): Change return type.

	* grub-core/normal/charset.c (grub_unicode_aglomerate_comb): Don't
	agglomerate control characters with combining marks.
	(bidi_line_wrap): Allow break on tab.
	(grub_unicode_get_comb_start): New function.
	* grub-core/normal/menu_entry.c: Restructure to handle wide characters
	and tab correctly.
	* grub-core/normal/menu_text.c (print_entry): Replace \n, \r, \b and \e
	with a space.
	* grub-core/normal/term.c (print_ucs4_terminal): New argument
	fixed_tab_size. All users updated.
	* include/grub/term.h (GRUB_TERM_TAB_WIDTH): New const.
	(grub_term_getcharwidth): Handle \t.
	* include/grub/unicode.h (grub_unicode_glyph_dup): Fix allocation
	and copy.

	* include/grub/efi/efi.h: Likewise.
	* include/grub/efi/api.h: Add guid for EFI-specified variables.
	* include/grub/charset.h (GRUB_MAX_UTF16_PER_UTF8): New definition.
	* grub-core/normal/charset.c (grub_utf8_process): Move from here ...
	* include/grub/charset.h (grub_utf8_process): ... to here. Inline.
	* grub-core/normal/charset.c (grub_utf8_to_utf16): Move from here ...
	* include/grub/charset.h (grub_utf8_to_utf16): ... to here. Inline.

	to grub_ssize_t.
	* grub-core/normal/main.c (grub_normal_init_page): Fix msg_len type.
	* include/grub/charset.h (grub_utf8_to_ucs4_alloc): Fix prototype.

	on it.

	* include/grub/charset.h (grub_getend): New function.
	* grub-core/script/function.c (grub_script_function_find): Use
	grub_getend.
	* grub-core/normal/completion.c (add_completion): Likewise.

	* grub-core/normal/charset.c (grub_utf8_to_utf16): Don't eat possibly
	valid character.
	(grub_is_valid_utf8): Use grub_utf8_process.
	Check resulting code range.
	(grub_utf8_to_ucs4): Use grub_utf8_process.
	* include/grub/charset.h (grub_utf16_to_utf8): Don't eat up a possibly
	valid character.

	(grub_ucs4_to_utf8_alloc): Likewise.
	(grub_ucs4_to_utf8): Likewise.
	* grub-core/normal/charset.c (grub_ucs4_to_utf8): Likewise.
	(grub_ucs4_to_utf8_alloc): Likewise.

	* include/grub/charset.h (GRUB_MAX_UTF8_PER_LATIN1): New const.
	(grub_latin1_to_utf8): New inline function.
	* grub-core/fs/affs.c (grub_affs_iterate_dir): Convert latin1 to UTF8.

	* config.h.in (RE_ENABLE_I18N) [!GRUB_UTIL]: New define.
	* grub-core/lib/posix_wrap/ctype.h (islower): Use grub_islower.
	(isupper): Use grub_isupper.
	(isascii): New inline function.
	* grub-core/lib/posix_wrap/wchar.h: Replace dummy with real contents.
	* grub-core/lib/posix_wrap/wctype.h: Likewise.
	* grub-core/normal/charset.c (grub_utf8_process): New function.
	(grub_utf8_to_utf16): Use grub_utf8_process.
	(grub_encode_utf8_character): New function.
	(grub_ucs4_to_utf8): Use grub_encode_utf8_character.
	* include/grub/charset.h (grub_utf8_process): New declaration.
	(grub_encode_utf8_character): Likewise.
	* include/grub/misc.h (grub_islower): New inline function.
	(grub_isupper): Likewise.
	(grub_strchrsub): Moved down to fix the definitions.

	* grub-core/fs/hfsplus.c (grub_hfsplus_catkey_internal): Change to
	UTF-16-BE. All users updated.
	(grub_hfsplus_cmp_catkey): Fix unicode handling.
	(grub_hfsplus_iterate_dir): Likewise.
	(grub_hfsplus_label): Likewise.

	* grub-core/normal/charset.c (grub_utf8_to_utf16): Handle 6- and 7-byte
	sequences as incorrect.
	(grub_is_valid_utf8): Likewise.
	(grub_utf8_to_ucs4): Likewise.
	(grub_ucs4_to_utf8): Handle codepoints outside of BMP.
	(grub_ucs4_to_utf8_alloc): Likewise.
	* include/grub/charset.h (grub_utf16_to_utf8): Likewise.