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SPLIT_NON_ASCII_CHAR.
(describe_vector): Use MAKE_CHAR instead of MAKE_NON_ASCII_CHAR.
(Faccessible_keymaps): Use FETCH_STRING_CHAR_ADVANCE
unconditionally.
(Fkey_description): Likewise.

(adjust_markers_for_insert): Argument changed.  Caller changed.
(adjust_markers_for_replace): Likewise.
(ADJUST_CHAR_POS, combine_bytes, byte_combining_error,
CHECK_BYTE_COMBINING_FOR_INSERT): Deleted.
(copy_text): Delete unused local varialbe c_save.  For converting
to multibyte, be sure to make all 8-bit characters in valid
multibyte form.
(count_size_as_multibyte): Handle 8-bit characters correctly.
(insert_1_both, insert_from_string_1, insert_from_buffer_1,
adjust_after_replace, replace_range, del_range_2)
[BYTE_COMBINING_DEBUG]: Abort if byte combining occurs.
(insert_1_both, insert_from_string_1, insert_from_buffer_1,
adjust_after_replace, replace_range, del_range_2) Delete codes for
handling byte combining.
(adjust_before_replace): Deleted.

SPLIT_NON_ASCII_CHAR.
(fontset_ref_via_base, fontset_set): Likewise

(Fstring_as_unibyte): Be sure to make all 8-bit characters in
unibyte in the result.
(Fstring_as_multibyte): Be sure to make all 8-bit characters in
valid multibyte form in the result.
(map_char_table): Use MAKE_CHAR instead of MAKE_NON_ASCII_CHAR.
(Fbase64_encode_region, Fbase64_encode_string): If base64_encode_1
return -1, signal an error.
(base64_encode_1): New arg MULTIBYTE.  Get each character by
CHAR_STRING_AND_LENGTH if MULTIBYTE is nonzero.  If a multibyte
character is found, return -1.
(Fbase64_decode_region): Delete codes for handling byte-combining.
Treat each decoded byte as a unibyte character.
(Fbase64_decode_string): Return unibyte string.
(Fcompare_strings, concat, string_byte_to_char): Use
FETCH_STRING_CHAR_ADVANCE_NO_CHECK instead off
FETCH_STRING_CHAR_ADVANCE.
(Fstring_lessp): Use FETCH_STRING_CHAR_ADVANCE unconditionally.
(mapcar1): If SEQ is string, always use FETCH_STRING_CHAR_ADVANCE.

dst_multibyte members of coding.  On handling REPLACE on unibyte
buffer, convert the result of decode_coding to unibyte.  On
inserting into a mutibyte buffer, always call code_convert_region.
(e_write): Setup cdoing->src_multibyte according to the
multibyteness of the source (buffer or string).

multibyte form.
(Ftranspose_region) [BYTE_COMBINING_DEBUG]: Abort if byte
combining occurs.
(Ftranspose_region): Delete codes for handling byte combining.

(Faset): Likewise.

devided into ISO_control_0 and ISO_control_1.
(struct coding_system): New members src_multibyte, dst_multibyte,
errors, and result.  Delete member fake_multibyte.
(CODING_REQUIRE_DECODING): Return 1 if coding->dst_multibyte is
nonzero.
(CODING_REQUIRE_ENCODING): Return 1 if coding->src_multibyte is
nonzero.

CODING_FINISH_INSUFFICIENT_SRC if there's not enough source.
(ONE_MORE_CHAR, EMIT_CHAR, EMIT_ONE_BYTE, EMIT_TWO_BYTE,
EMIT_BYTES): New macros.
(THREE_MORE_BYTES, DECODE_CHARACTER_ASCII,
DECODE_CHARACTER_DIMENSION1, DECODE_CHARACTER_DIMENSION2): These
macros deleted.
(CHECK_CODE_RANGE_A0_FF): This macro deleted.
(detect_coding_emacs_mule): Use UNIBYTE_STR_AS_MULTIBYTE_P to
check the validity of multibyte sequence.
(decode_coding_emacs_mule): New function.
(encode_coding_emacs_mule): New macro.
(detect_coding_iso2022): Use ONE_MORE_BYTE to fetch a byte from
the source.
(DECODE_ISO_CHARACTER): Just return a character code.
(DECODE_COMPOSITION_START): Set coding->result instead of result.
(decode_coding_iso2022, decode_coding_sjis_big5, decode_eol): Use
EMIT_CHAR to produced decoded characters.  Exit the loop only by
macros ONE_MORE_BYTE or EMIT_CHAR.  Don't handle the case of last
block here.
(ENCODE_ISO_CHARACTER): Don't translate character here.  Produce
only position codes for an invalid character.
(encode_designation_at_bol): Return new destination pointer.  5th
arg DSTP is changed to DST.
(encode_coding_iso2022, decode_coding_sjis_big5): Get a character
from the source by ONE_MORE_CHAR.  Don't handle the case of last
block here.
(DECODE_SJIS_BIG5_CHARACTER, ENCODE_SJIS_BIG5_CHARACTER): These
macros deleted.
(detect_coding_sjis, detect_coding_big5, detect_coding_utf_8,
detect_coding_utf_16, detect_coding_ccl): Use ONE_MORE_BYTE and
TWO_MORE_BYTES to fetch a byte from the source.
(encode_eol): Pay attention to coding->src_multibyte.
(detect_coding, detect_eol): Preserve members src_multibyte and
dst_multibyte.
(DECODING_BUFFER_MAG): Return 2 even for coding_type_raw_text.
(encoding_buffer_size): Set magnification to 3 for all coding
systems that require encoding.
(ccl_coding_driver): For decoding, be sure that the result is
valid multibyte sequence.
(decode_coding): Initialize coding->errors and coding->result.
For emacs-mule, call decode_coding_emacs_mule.  For no-conversion
and raw-text, always call decode_eol.  Handle the case of last
block here.  If not coding->dst_multibyte, convert the resulting
sequence to unibyte.
(encode_coding): Initialize coding->errors and coding->result.
For emacs-mule, call encode_coding_emacs_mule.  For no-conversion
and raw-text, always call encode_eol.  Handle the case of last
block here.
(shrink_decoding_region, shrink_encoding_region): Detect cases
that we can't skip data more rigidly.
(code_convert_region): Setup src_multibyte and dst_multibyte
members of coding.  For decoding, if the buffer is multibyte,
convert the source sequence to unibyte in advance.  For encoding,
if the buffer is multibyte, convert the resulting sequence to
multibyte afterward.
(run_pre_post_conversion_on_str): New function.
(code_convert_string): Deleted and divided into the following two.
(decode_coding_string, encode_coding_string): New functions.
(code_convert_string1, code_convert_string_norecord): Call one of
above.
(Fdecode_sjis_char, Fdecode_big5_char): Use MAKE_CHAR instead of
MAKE_NON_ASCII_CHAR.
(Fset_terminal_coding_system_internal,
Fset_safe_terminal_coding_system_internal): Setup src_multibyte
and dst_multibyte members.
(init_coding_once): Initialize iso_code_class with new enum
ISO_control_0 and ISO_control_1.

CHARSET_8_BIT_GRAPHIC): New macros.
(SINGLE_BYTE_CHAR_P): Make it faster by using casting.
(CHARSET_ISO_GRAPHIC_PLANE): Use XINT instead of XFASTINT.
(CHARSET_REVERSE_CHARSET): Likewise.
(CHARSET_VALID_P): Handle new charsets; eight-bit-control and
eight-bit-graphic.
(BYTES_BY_CHAR_HEAD, WIDTH_BY_CHAR_HEAD): Optimize for ASCII.
(CHAR_CHARSET, MAKE_CHAR, SPLIT_CHAR, CHAR_BYTES): Likewise.
(PARSE_MULTIBYTE_SEQ) [BYTE_COMBINING_DEBUG]: Abort if we
encounter an invalid multibyte sequence.
(PARSE_MULTIBYTE_SEQ) [not BYTE_COMBINING_DEBUG]: Assume multibyte
sequence is always valid.
(MAKE_NON_ASCII_CHAR, SPLIT_NON_ASCII_CHAR): These macros Deleted.
(UNIBYTE_STR_AS_MULTIBYTE_P, MULTIBYTE_STR_AS_UNIBYTE_P): New
macros.
(CHAR_STRING): For 8-bit characters, call char_to_string.
(INC_POS) [not BYTE_COMBINING_DEBUG]: Faster version.  Assume
multibyte sequence is always valid.
(BUF_INC_POS) [not BYTE_COMBINING_DEBUG]: Likewise.
(parse_str_as_multibyte, str_as_multibyte, str_to_multibyte,
str_as_unibyte): Extern them.
(BCOPY_SHORT): Fix a bug.
(CHAR_LEN): This macro deleted.  Callers changed to use
CHAR_BYTES.
(FETCH_STRING_CHAR_ADVANCE): Check multibyteness of STRING.
(FETCH_STRING_CHAR_ADVANCE_NO_CHECK): New macro.
(FETCH_CHAR_ADVANCE): Check multibyteness of the current buffer.

variables.
(SPLIT_CHARACTER_SEQ): This macro deleted.
(SPLIT_MULTIBYTE_SEQ): Assume that multibyte sequence at STR is
valid.
(CHAR_COMPONENTS_VALID_P): Handle new charsets; eight-bit-control
and eight-bit-graphic.
(char_to_string): Likewise.  Signal an error for too large
character code.
(char_printable_p): Return 0 for 8-bit characters.
(update_charset_table): Update iso_charset_table only when a final
character is non-negative.
(find_charset_in_text): Renamed from find_charset_in_str.
Arguments and return value changed.  Callers changed.
(Fdefine_charset): Args ISO-FINAL-CHAR and ISO-GRAPHIC-PLANE can
be -1 if CHARSET is used only internally.
(Fmake_char_internal): Handle new charsets; eight-bit-control and
eight-bit-graphic.
(Fcharset_after): Simplified.
(char_valid_p): Use SPLIT_CHAR, not SPLIT_NON_ASCII_CHAR.
(char_bytes): Return 2 for chars of the range 0xA0..0xFF.
(multibyte_chars_in_text): Simplified by assuming there's no
invalid multibyte sequence.
(parse_str_as_multibyte, str_as_multibyte, str_to_multibyte,
str_as_unibyte): New functions.
(Fstring): Simpified by assuming that byte combining never
happens.
(init_charset_once): Initialization for
LEADING_CODE_8_BIT_CONTROL.
(syms_of_charset): Intern and staticpro Qeight_bit_control and
Qeight_bit_graphic.  Include them in Vcharset_list.  Make charsets
eight-bit-control and eight-bit-graphic.

as is.
(CCL_MAKE_CHAR): Use MAKE_CHAR, not MAKE_NON_ASCII_CHAR.

SPLIT_NON_ASCII_CHAR.

it is multibyte.  Setup src_multibyte and dst_multibyte members of
process_coding properly.

to unibyte.

apparent char boundary.
(Fset_buffer_multibyte): Convert 8-bit characters in the range
0x80..0x9F to/from multibyte form.

convert it to unibyte.
(make_string): Use parse_str_as_multibyte, not chars_in_text.

Move aliases (indent-for-comment, set-comment-column, kill-comment
and indent-new-comment-line) to the beginning of the file.
Get rid of the last few CLisms.
(comment-forward): Avoid decf.
(comment-make-extra-lines): Comment-out asserts.
(comment-with-narrowing): Properly create uninterned symbol.
(comment-region-internal): Comment-out asserts.  Avoid incf and decf.
(comment-indent-new-line): Fix bug where compt could be set but
not comstart.  Set comment-column more carefully.

(syms_of_xfns): Move `image-types' to xdisp.c.

(syms_of_xdisp): Move `image-types' variable here from xfns.c.

(syms_of_w32fns): Remove `image-types'.

like mpage, psnup, etc.
(isLineStep): Code fix.
(BeginDoc, BeginSheet): Utility compatibility.

(ps-printer-name-option): Replace defconst by defvar.
(ps-postscript-code-directory): XEmacs compatibility.
(ps-header-sheet, ps-setup, ps-begin-file, ps-begin-job): Code
fix.
(ps-user-defined-prologue, ps-print-prologue-header)
(ps-xemacs-face-kind-p, ps-face-bold-p, ps-face-italic-p): XEmacs
compatibility and code fix.
(ps-print-background-image, ps-print-background-text):
Customization fix.
(ps-line-number-start, ps-n-up-on): New vars.

the indent-comment function to just return the appropriate indent.

(ENVADD): Redefine as empty, to avoid requiring a Unixy shell.
(TEXINPUTS): Use semi-colon; export explicitly.
(MAKEINFO): Export explicitly.