inconsistent eol.
(code_convert_region): Always set saved_coding_symbol.
(decode_coding_string): Likewise. Update coding->symbol when we
encounter a inconsistent eol by the same way as
code_convert_region.
(DECODE_EMACS_MULE_COMPOSITION_CHAR): New macro.
(DECODE_EMACS_MULE_COMPOSITION_RULE): New macro.
(decode_composition_emacs_mule): New function.
(decode_coding_emacs_mule): Decode composition sequence by calling
decode_composition_emacs_mule.
(ENCODE_COMPOSITION_EMACS_MULE): New macro.
(encode_coding_emacs_mule): Changed from macro to function. If
a text contains compostions, encode them correctly.
(setup_coding_system): Set coding->commong_flags for emacs-mule so
that decoding and encoding are required.
coding->dst_multibyte before using CODING_REQUIRE_DECODING.
(encode_coding_string): Set coding->src_multibyte and
coding->dst_multibyte before using CODING_REQUIRE_ENCODING.
(conversion_buffer, conversion_buffer_size): Variables deleted.
(get_conversion_buffer): Function deleted.
(struct conversion_buffer): New structure.
(MAX_ALLOCA): New macro.
(allocate_conversion_buffer): New macro.
(extend_conversion_buffer, free_conversion_buffer): New functions.
(ccl_coding_driver): Set coding->result.
(decode_coding): Set coding->result to CODING_FINISH_NORMAL if
this is the last block of source.
(encode_coding): Likewise. Handle the source block as the last
one only when the whole source text is consumed.
(decode_coding_string): Handle the case that the output buffer is
too small to decode the whole source text. Use
allocate_conversion_buffer, extend_conversion_buffer and
free_conversion_buffer, not get_conversion_buffer.
(encode_coding_string): Likewise.
(init_coding): Function deleted.
(init_coding_once): Delete code to initialize
conversion_buffer_size.
cmp_data is not set properly (because of invalid code in the
source text).
(run_pre_post_conversion_on_str): Include text properties in the
resulting string.
(decode_coding_string): Set members of coding correctly.
(Qsafe_chars, Vchar_coding_system_table, Qchar_coding_system): New
variables.
(coding_safe_chars): New function.
(CODING_SAFE_CHAR_P): New macro.
(CHARSET_OK): New arg C. Call CODING_SAFE_CHAR_P instead of
checking safe_charsets member of the coding system. Caller
changed.
(detect_coding_iso2022): New local variable safe_chars.
(DECODE_DESIGNATION): Call CODING_SAFE_CHAR_P instead of checking
safe_charsets member of the coding system.
(decode_coding_iso2022): New local variable safe_chars.
(ENCODE_ISO_CHARACTER_DIMENSION1): Don't check unsafe chars here.
(ENCODE_ISO_CHARACTER_DIMENSION2): Likewise.
(ENCODE_ISO_CHARACTER): Arguments changed. Caller changed.
(ENCODE_UNSAFE_CHARACTER): New macro.
(encode_coding_iso2022): New local variable safe_chars. Check
unsafe chars.
(setup_coding_system): Delete the code to initialize
coding->safe_charses
(intersection, find_safe_codings): New functions.
(Ffind_coding_systems_region_internal): New function.
(syms_of_coding): Defsubr it. Initialize Qsafe_chars,
Qsafe_cding_system. Make Vchar_coding_system_table a Lisp
variable and initialize it.
