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24.8.2 ¥Ç¥£¥ì¥¯¥È¥ê̾

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¥Ç¥£¥ì¥¯¥È¥ê̾¤È¤½¤Î¥Õ¥¡¥¤¥ë¤È¤·¤Æ¤Î̾Á°¤È¤Î°ã¤¤¤Ï¤ï¤º¤«¤Ç¤¹¤¬½ÅÂç¤Ç¤¹¡£ Emacs¤ÎÊÑ¿ô¤ä´Ø¿ô°ú¿ô¤¬¥Ç¥£¥ì¥¯¥È¥ê̾¤Èµ­½Ò¤µ¤ì¤Æ¤¤¤ë¤È¤­¤Ë¤Ï¡¢ ¥Ç¥£¥ì¥¯¥È¥ê¤Î¥Õ¥¡¥¤¥ë¤È¤·¤Æ¤Î̾Á°¤Ï¼õ¤±ÉÕ¤±¤Þ¤»¤ó¡£

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Function: file-name-as-directory filename

¤³¤Î´Ø¿ô¤Ï¡¢¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à¤¬ ¥Ç¥£¥ì¥¯¥È¥ê̾¤È²ò¼á¤¹¤ëɽ¸½¤Çɽ¤·¤¿filename¤Îʸ»úÎó¤òÊÖ¤¹¡£ UNIX¤Ç¤Ï¡¢Ê¸»úÎó¤Ë¡ÊºÇ¸å¤Ë¥¹¥é¥Ã¥·¥å¤¬¤Ê¤±¤ì¤Ð¡Ë¥¹¥é¥Ã¥·¥å¤ò Éղ乤뤳¤È¤ò°ÕÌ£¤¹¤ë¡£ VMS¤Ç¤Ï¡¢[X]Y.DIR.1¤Î·Á¤Îʸ»úÎó¤ò[X.Y]¤Î·Á¤ËÊÑ´¹¤¹¤ë¡£

(file-name-as-directory "~rms/lewis")
     ⇒ "~rms/lewis/"
Function: directory-file-name dirname

¤³¤Î´Ø¿ô¤Ï¡¢¥ª¥Ú¥ì¡¼¥Æ¥£¥ó¥°¥·¥¹¥Æ¥à¤¬ ¥Õ¥¡¥¤¥ë¤Î̾Á°¤È²ò¼á¤¹¤ëɽ¸½¤Çɽ¤·¤¿dirname¤Îʸ»úÎó¤òÊÖ¤¹¡£ UNIX¤Ç¤Ï¡¢Ê¸»úÎó¤ÎºÇ¸å¤Î¥¹¥é¥Ã¥·¥å¤ò¼è¤ê½ü¤¯¤³¤È¤ò°ÕÌ£¤¹¤ë¡£ VMS¤Ç¤Ï¡¢[X.Y]¤Î·Á¤Îʸ»úÎó¤ò[X]Y.DIR.1¤Î·Á¤ËÊÑ´¹¤¹¤ë¡£

(directory-file-name "~lewis/")
     ⇒ "~lewis"

¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤ò²ð¤·¤ÆÄ̾ﻲ¾È¤µ¤ì¤ë¥Ç¥£¥ì¥¯¥È¥ê¤Ë¤Ï ¥Ç¥£¥ì¥¯¥È¥ê̾¤Î¾Êά·Á¤¬Í­ÍѤǤ¹¡£ ¥æ¡¼¥¶¡¼¤Ï¥ê¥ó¥¯¤Î̾Á°¤ò¥Ç¥£¥ì¥¯¥È¥ê¤Î¡ØÌ¾Á°¡Ù¤È¤·¤Ð¤·¤Ð¤ß¤Ê¤·¡¢ ¥Ç¥£¥ì¥¯¥È¥ê¤Î¡ØËÜÅö¤Î¡Ù̾Á°¤ò¸«¤ë¤Î¤ò¤ï¤º¤é¤ï¤·¤¯»×¤¦¤³¤È¤¬¤¢¤ê¤Þ¤¹¡£ ¥ê¥ó¥¯Ì¾¤ò¡ØËÜÅö¤Î¡Ù̾Á°¤Î¾Êά·Á¤ÈÄêµÁ¤·¤Æ¤ª¤¯¤È¡¢ Emacs¤Ï¥æ¡¼¥¶¡¼¤Ë¾Êά·Á¤òɽ¼¨¤·¤Þ¤¹¡£

Variable: directory-abbrev-alist

ÊÑ¿ôdirectory-abbrev-alist¤Ï¡¢ ¥Ç¥£¥ì¥¯¥È¥ê¤Ë»È¤¦¾Êά·Á¤ÎÏ¢Áۥꥹ¥È¤òÊÝ»ý¤¹¤ë¡£ ³ÆÍ×ÁǤÏ(from . to)¤Î·Á¤Ç¤¢¤ê¡¢ ¥Ç¥£¥ì¥¯¥È¥ê̾¤Ëfrom¤¬¸½¤ì¤ë¤È¤³¤ì¤òto¤ËÃÖ¤­´¹¤¨¤ë¤³¤È¤ò»Ø¼¨¤¹¤ë¡£ ʸ»úÎófrom¤Ï¼ÂºÝ¤Ë¤ÏÀµµ¬É½¸½¤Ç¤¢¤ê¡¢¤Ä¤Í¤Ë‘^’¤Ç»Ï¤Þ¤ë¤³¤È¡£ ´Ø¿ôabbreviate-file-name¤¬¤³¤ì¤é¤ÎÃÖ´¹¤ò¹Ô¤¦¡£

¥Õ¥¡¥¤¥ësite-init.el¤Ç¤³¤ÎÊÑ¿ô¤ËÀßÄꤷ¡¢ ÆÉ¼Ô¤Î¥µ¥¤¥È¤ËŬ¤·¤¿¾Êά·Á¤òµ­½Ò¤Ç¤­¤ë¡£

¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à/home/fsf¤Ê¤É¤ò¥·¥ó¥Ü¥ê¥Ã¥¯Ì¾/fsf¤ÇÄ̾ﻲ¾È¤¹¤ë ¥·¥¹¥Æ¥à¤ÎÎã¤ò¤Ä¤®¤Ë¼¨¤¹¡£

(("^/home/fsf" . "/fsf")
 ("^/home/gp" . "/gp")
 ("^/home/gd" . "/gd"))

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Function: abbreviate-file-name dirname

¤³¤Î´Ø¿ô¤Ï¡¢directory-abbrev-alist¤Î¾Êά·Á¤ò°ú¿ô¤ËŬÍѤ·¡¢ ¥æ¡¼¥¶¡¼¤Î¥Û¡¼¥à¥Ç¥£¥ì¥¯¥È¥ê¤ò‘~’¤ËÃÖ¤­´¹¤¨¤ë¡£