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32.10.5 ¥Ç¥Õ¥©¥ë¥È¤Î¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à

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¤³¤ì¤é¤ÎÊÑ¿ô¤ÎÌÜŪ¤Ï¡¢ÆÉ¼Ô¤¬Ë¾¤à¥Ç¥Õ¥©¥ë¥È¤ò¤¤¤Ã¤¿¤ó¤³¤ì¤é¤ËÀßÄꤷ¤Æ¤ª¤±¤Ð¡¢ ºÆÅÙÊѹ¹¤¹¤ëɬÍפ¬¤Ê¤¤¤è¤¦¤Ë¤¹¤ë¤³¤È¤Ç¤¹¡£ Lisp¥×¥í¥°¥é¥à¤ÎÆÃÄê¤ÎÁàºî¸þ¤±¤ËÆÃÄê¤Î¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò»ØÄꤹ¤ë¤Ë¤Ï¡¢ ¤³¤ì¤é¤ÎÊÑ¿ô¤òÊѹ¹¤·¤Ê¤¤¤Ç¤¯¤À¤µ¤¤¡£ ¤«¤ï¤ê¤Ë¡¢coding-system-for-read¤äcoding-system-for-write¤ò »È¤Ã¤Æ¾å½ñ¤­¤·¤Þ¤¹¡Êsee Specifying Coding Systems¡Ë¡£

Variable: file-coding-system-alist

¤³¤ÎÊÑ¿ô¤Ï¡¢ÆÃÄê¤Î¥Õ¥¡¥¤¥ë¤ÎÆÉ¤ß½ñ¤­¤Ë»ÈÍѤ¹¤ë ¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò»ØÄꤹ¤ëÏ¢Áۥꥹ¥È¤Ç¤¢¤ë¡£ ³ÆÍ×ÁǤÏ(pattern . coding)¤Î·Á¤Ç¤¢¤ê¡¢ pattern¤ÏÆÃÄê¤Î¥Õ¥¡¥¤¥ë̾¤Ë°ìÃפ¹¤ëÀµµ¬É½¸½¤Ç¤¢¤ë¡£ pattern¤Ë°ìÃפ¹¤ë¥Õ¥¡¥¤¥ë̾¤ËÅö³ºÍ×ÁǤòŬÍѤ¹¤ë¡£

Í×ÁǤÎCDR¡¢coding¤Ï¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤Ç¤¢¤ë¤«¡¢ 2¤Ä¤Î¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò¼ý¤á¤¿¥³¥ó¥¹¥»¥ë¤Ç¤¢¤ë¤«¡¢ ´Ø¿ô¥·¥ó¥Ü¥ë¤Ç¤¢¤ë¤³¤È¡£ coding¤¬¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤Ç¤¢¤ë¤È¡¢ ¥Õ¥¡¥¤¥ë¤ÎÆÉ¤ß½ñ¤­¤ÎξÊý¤Ë¤½¤Î¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò»È¤¦¡£ coding¤¬2¤Ä¤Î¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò¼ý¤á¤¿¥³¥ó¥¹¥»¥ë¤Ç¤¢¤ë¤È¡¢ ¤½¤ÎCAR¤ÏÉü¹æ²½¤Ë»È¤¦¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò»ØÄꤷ¡¢ ¤½¤ÎCDR¤ÏÉ乿²½¤Ë»È¤¦¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò»ØÄꤹ¤ë¡£

coding¤¬´Ø¿ô¥·¥ó¥Ü¥ë¤Ç¤¢¤ë¤È¡¢ ¤½¤Î´Ø¿ô¤Ï¡¢¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤«¡¢ 2¤Ä¤Î¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò¼ý¤á¤¿¥³¥ó¥¹¥»¥ë¤òÊÖ¤¹¤³¤È¡£ ¤½¤ÎÃͤϾå¤Ë½Ò¤Ù¤¿¤è¤¦¤Ë»È¤ï¤ì¤ë¡£

Variable: process-coding-system-alist

¤³¤ÎÊÑ¿ô¤Ï¡¢¥µ¥Ö¥×¥í¥»¥¹¤Ç¼Â¹Ô¤·¤Æ¤¤¤ë¥×¥í¥°¥é¥à¤Ë°Í¸¤·¤Æ ¥µ¥Ö¥×¥í¥»¥¹¤Ë»È¤¦¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò»ØÄꤹ¤ëÏ¢Áۥꥹ¥È¤Ç¤¢¤ë¡£ file-coding-system-alist¤ÈƱÍÍ¤ËÆ¯¤¯¤¬¡¢ pattern¤Ï¥µ¥Ö¥×¥í¥»¥¹¤ò»Ï¤á¤ë¤¿¤á¤ËÍѤ¤¤¿¥×¥í¥°¥é¥à̾¤ËÂФ·¤Æ °ìÃפò¼è¤ëÅÀ¤¬°Û¤Ê¤ë¡£ ¤³¤ÎÏ¢Áۥꥹ¥È¤Ë»ØÄꤷ¤¿¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤Ï¡¢ ¥µ¥Ö¥×¥í¥»¥¹¤È¤ÎÆþ½ÐÎϤ˻ÈÍѤ¹¤ë¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤Î½é´ü²½¤ËÍѤ¤¤ì¤ë¤¬¡¢ set-process-coding-system¤ò»È¤Ã¤Æ¡¢ ¤¢¤È¤ÇÊ̤Υ³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò»ØÄê¤Ç¤­¤ë¡£

·Ù¹ð¡§ ¥Ç¡¼¥¿¤«¤é¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò·èÄꤹ¤ëundecided¤Î¤è¤¦¤Ê ¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤Ï¡¢È󯱴ü¥µ¥Ö¥×¥í¥»¥¹¤Î½ÐÎϤËÂФ·¤Æ¤Ï ´°Á´¤Ë¿®ÍêÀ­¤Î¤¢¤ëưºî¤Ï¤Ç¤­¤Ê¤¤¡£ ¤³¤ì¤Ï¡¢Emacs¤¬È󯱴ü¥µ¥Ö¥×¥í¥»¥¹¤Î½ÐÎϤ¬ ÅþÃ夹¤ë¤¿¤Ó¤Ë°ì²ô¤Ç½èÍý¤¹¤ë¤«¤é¤Ç¤¢¤ë¡£ ¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤¬Ê¸»ú¥³¡¼¥ÉÊÑ´¹¤ä¹ÔËöÊÑ´¹¤ò̤»ØÄê¤Ë¤·¤Æ¤¤¤ë¤È¡¢ Emacs¤Ï1¤Ä¤Î²ô¤«¤éÀµ¤·¤¤ÊÑ´¹¤ò¸¡½Ð¤·¤è¤¦¤È»î¤ß¤ë¤¬¡¢ ¤³¤ì¤¬¤Ä¤Í¤Ëưºî¤¹¤ë¤È¤Ï¸Â¤é¤Ê¤¤¡£

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Variable: network-coding-system-alist

¤³¤ÎÊÑ¿ô¤Ï¡¢¥Í¥Ã¥È¥ï¡¼¥¯¥¹¥È¥ê¡¼¥à¤Ë»ÈÍѤ¹¤ë¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò »ØÄꤹ¤ëÏ¢Áۥꥹ¥È¤Ç¤¢¤ë¡£ file-coding-system-alist¤ÈƱÍÍ¤ËÆ¯¤¯¤¬¡¢ Í×ÁÇÆâ¤Îpattern¤Ï¥Ý¡¼¥ÈÈֹ椫Àµµ¬É½¸½¤Ç¤¢¤ëÅÀ¤¬°Û¤Ê¤ë¡£ ¤½¤ì¤¬Àµµ¬É½¸½¤Ç¤¢¤ë¤È¡¢¥Í¥Ã¥È¥ï¡¼¥¯¥¹¥È¥ê¡¼¥à¤ò³«¤¯¤¿¤á¤Ë »ÈÍѤ·¤¿¥Í¥Ã¥È¥ï¡¼¥¯¥µ¡¼¥Ó¥¹Ì¾¤ËÂФ·¤Æ°ìÃפò¤È¤ë¡£

Variable: default-process-coding-system

¤³¤ÎÊÑ¿ô¤Ï¡¢¤Ê¤Ë¤â»ØÄꤵ¤ì¤Æ¤¤¤Ê¤¤¥µ¥Ö¥×¥í¥»¥¹¡Ê¤ä¥Í¥Ã¥È¥ï¡¼¥¯¥¹¥È¥ê¡¼¥à¡Ë ¤ÎÆþ½ÐÎϤ˻ÈÍѤ¹¤ë¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤ò»ØÄꤹ¤ë¡£

Ãͤϡ¢(input-coding . output-coding)¤Î·Á¤Î ¥³¥ó¥¹¥»¥ë¤Ç¤¢¤ë¤³¤È¡£ ¤³¤³¤Ç¡¢input-coding¤Ï¥µ¥Ö¥×¥í¥»¥¹¤«¤é¤ÎÆþÎϤËŬÍѤµ¤ì¡¢ output-coding¤Ï¤½¤ì¤Ø¤Î½ÐÎϤËŬÍѤµ¤ì¤ë¡£

Function: find-operation-coding-system operation &rest arguments

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(decoding-system encoding-system)

Âè1Í×ÁÇdecoding-system¤Ï ¡Êoperation¤¬Éü¹æ²½¤ò¹Ô¤¦¾ì¹ç¤Ë¤Ï¡ËÉü¹æ²½¤ËÍѤ¤¤ë ¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤Ç¤¢¤ê¡¢ encoding-system¤Ï ¡Êoperation¤¬É乿²½¤ò¹Ô¤¦¾ì¹ç¤Ë¤Ï¡ËÉ乿²½¤ËÍѤ¤¤ë ¥³¡¼¥Ç¥£¥ó¥°¥·¥¹¥Æ¥à¤Ç¤¢¤ë¡£

°ú¿ôoperation¤Ï¡¢Emacs¤ÎÆþ½ÐÎÏ´ðËÜ´Ø¿ô¤Î insert-file-contents¡¢write-region¡¢call-process¡¢ call-process-region¡¢start-process¡¢ open-network-stream¤Î¤¤¤º¤ì¤«¤Ç¤¢¤ë¤³¤È¡£

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¤³¤Î´Ø¿ô¤Ï¡¢operation¤Ë±þ¤¸¤ÆÅö³ºÂоݤò file-coding-system-alist¤ä process-coding-system-alist¤ä network-coding-system-alist¤Çõ¤¹¡£ see Default Coding Systems¡£