(sql-ingres, sql-solid, sql-mysql, sql-informix, sql-sybase)
(sql-oracle): Ditto.
(sql-help): Doc change.
(sql-mode-oracle-font-lock-keywords): Added PL/SQL keywords, data
types and exceptions.
(sql-placeholder-history): New variable.
(sql-query-placeholders-and-send): New function that will query
the user and replace placeholders with user input.
(sql-oracle): If running on NT, set comint-input-sender to
sql-query-placeholders-and-send.
(sql-stop): If in the SQLi buffer, insert stop notification, else
present it as a message.
(sql-input-ring-separator): Doc change.
(sql-input-ring-file-name): Doc change.
(sql-interactive-mode): Use `sql-input-ring-separator' and
`sql-input-ring-file-name' to set the comint-mode equivalents
without making them local variables.
(sql-stop): Don't bind `sql-input-ring-separator' and
`sql-input-ring-file-name' dynamically to their comint-mode
equivalents.
(syms_of_fns): Initialize new variables.
(sweep_weak_table): Handle weakness `key-or-value' and
`key-and-value'.
(Fmake_hash_table): Recognize `key-and-value' and `key-or-value'
weakness, with t meaning the same as `key-and-value'.
(sort-coding-systems-predicate): New variable.
(sort-coding-systems): New function.
(find-coding-systems-region): Use
find-coding-systems-region-internal.
(find-coding-systems-string): Use find-coding-systems-region.
(find-coding-systems-for-charsets): Check
char-coding-system-table.
(select-safe-coding-system-accept-default-p): New variable.
(select-safe-coding-system): Mostly rewritten. New argument
ACCEPT-DEFAULT-P.
(select-message-coding-system): Call select-safe-coding-system
with ACCEPT-DEFAULT-P arg.
(reset-language-environment): Reset default-sendmail-coding-system
to the default value iso-latin-1.
(set-language-environment): Don't set the obsolete variable
charset-origin-alist.
(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.
(isearch-done): Add something to command-history to resume
the search.
(isearch-yank-line, isearch-yank-word): Use
buffer-substring-no-properties instead of buffer-substring.
