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(file-name-directory "lewis/foo") ; UNIX¤ÎÎã
⇒ "lewis/"
(file-name-directory "foo") ; UNIX¤ÎÎã
⇒ nil
(file-name-directory "[X]FOO.TMP") ; VMS¤ÎÎã
⇒ "[X]"
¤³¤Î´Ø¿ô¤Ïfilename¤ÎÈó¥Ç¥£¥ì¥¯¥È¥êÉôʬ¤òÊÖ¤¹¡£
(file-name-nondirectory "lewis/foo") ⇒ "foo"
(file-name-nondirectory "foo") ⇒ "foo"
;; ¤Ä¤®¤ÎÎã¤ÏVMS¤Ç¤Î¤ßÀµ³Î¤Ç¤¢¤ë
(file-name-nondirectory "[X]FOO.TMP")
⇒ "FOO.TMP"
¤³¤Î´Ø¿ô¤Ï¡¢filename¤«¤éÈÇÈֹ桢¥Ð¥Ã¥¯¥¢¥Ã¥×ÈÇÈֹ桢 ËöÈø¤Î¥Æ¥£¥ë¥À¤ò¤¹¤Ù¤Æºï½ü¤·¤¿¤â¤Î¤òÊÖ¤¹¡£
(file-name-sans-versions "~rms/foo.~1~") ⇒ "~rms/foo"
(file-name-sans-versions "~rms/foo~") ⇒ "~rms/foo"
(file-name-sans-versions "~rms/foo") ⇒ "~rms/foo"
;; ¤Ä¤®¤ÎÎã¤ÏVMS¤Ç¤Î¤ßÀµ³Î¤Ç¤¢¤ë
(file-name-sans-versions "foo;23")
⇒ "foo"
¤³¤Î´Ø¿ô¤Ï¡¢filename¤«¤é¤¢¤ì¤Ð¡Ø³ÈÄ¥»Ò¡Ù¤ò½ü¤¤¤¿¤â¤Î¤òÊÖ¤¹¡£ ¥Õ¥¡¥¤¥ë̾¤Î³ÈÄ¥»Ò¤È¤Ï¡¢ ̾Á°¤ÎºÇ¸å¤ÎÉôʬ¤Ë¤¢¤ë‘.’¤Ç»Ï¤Þ¤ëÉôʬ¤Ç¤¢¤ë¡£ ¤¿¤È¤¨¤Ð¤Ä¤®¤Î¤È¤ª¤ê¤Ç¤¢¤ë¡£
(file-name-sans-extension "foo.lose.c") ⇒ "foo.lose" (file-name-sans-extension "big.hack/foo") ⇒ "big.hack/foo"