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Kenichi Handa 2001-01-31 23:56:40 +00:00
parent a2852e456f
commit 3c948dde90
2 changed files with 4 additions and 58 deletions
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lisp/ChangeLog
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@ -1,7 +1,7 @@
2001-02-01 Kenichi Handa <handa@etl.go.jp>
* international/mule.el (make-coding-system): Add description
about recognized properties.
about recognized properties in the docstring.
* international/mule-conf.el: Remove unused charsets
mac-roman-lower and mac-roman-upper.

60
lisp/international/mule.el
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@ -391,71 +391,17 @@ code-point in CCS. Currently not supported and just ignored."
;; `base coding system'. The function `make-coding-system' sets this
;; value automatically and `define-coding-system-alias' updates it.
;;
;; See the documentation of make-coding-system for the meanings of the
;; following properties.
;;
;; o post-read-conversion
;;
;; The value is a function to call after some text is inserted and
;; decoded by the coding system itself and before any functions in
;; `after-insert-functions' are called. The arguments to this
;; function is the same as those of a function in
;; `after-insert-functions', i.e. LENGTH of a text while putting point
;; at the head of the text to be decoded
;;
;; o pre-write-conversion
;;
;; The value is a function to call after all functions in
;; `write-region-annotate-functions' and `buffer-file-format' are
;; called, and before the text is encoded by the coding system itself.
;; The arguments to this function is the same as those of a function
;; in `write-region-annotate-functions', i.e. FROM and TO specifying
;; region of a text.
;;
;; o translation-table-for-decode
;;
;; The value is a translation table to be applied on decoding. See
;; the function `make-translation-table' for the format of translation
;; table.
;;
;; o translation-table-for-encode
;;
;; The value is a translation table to be applied on encoding.
;;
;; o safe-chars
;;
;; The value is a char table. If a character has non-nil value in it,
;; the character is safely supported by the coding system. This
;; overrides the specification of safe-charsets.
;; o safe-charsets
;;
;; The value is a list of charsets safely supported by the coding
;; system. The value t means that all charsets Emacs handles are
;; supported. Even if some charset is not in this list, it doesn't
;; mean that the charset can't be encoded in the coding system,
;; instead, it just means that some other receiver of a text encoded
;; in the coding system won't be able to handle that charset.
;;
;; o mime-charset
;;
;; The value is a symbol of which name is `MIME-charset' parameter of
;; the coding system.
;;
;; o charset-origin-alist
;;
;; The value is a list of this form:
;; (CHARSET EXTERNAL-CHARSET-NAME ENCODING-FUNCTION).
;; ENCODING-FUNCTION is a function to encode a character in CHARSET
;; to the code in EXTERNAL-CHARSET-NAME. The command what-cursor-position
;; uses this information of the buffer-file-coding-system.
;; ENCODING-FUNCTION may be a translation table or a symbol whose
;; property `translation-table' is a translation table. In these case,
;; the translation table is used to encode the character.
;;
;; o valid-codes (meaningful only for a coding system based on CCL)
;;
;; The value is a list to indicate valid byte ranges of the encoded
;; file. Each element of the list is an integer or a cons of integer.
;; In the former case, the integer value is a valid byte code. In the
;; latter case, the integers specifies the range of valid byte codes.
;; Return coding-spec of CODING-SYSTEM