あなたは知ってる？多くの設定ファイル用メジャーモードがあるけど…

(require 'generic-x)

;; Windows candidates may be opened case sensitively on Unix
("\\.\\(?:[iI][nN][iI]\\|[lL][sS][tT]\\|[rR][eE][gG]\\|[sS][yY][sS]\\)\\'" . conf-mode)
("\\.\\(?:desktop\\|la\\)\\'" . conf-unix-mode)
("\\.ppd\\'" . conf-ppd-mode)
("java.+\\.conf\\'" . conf-javaprop-mode)
("\\.properties\\(?:\\.[a-zA-Z0-9._-]+\\)?\\'" . conf-javaprop-mode)
("\\`/etc/\\(?:DIR_COLORS\\|ethers\\|.?fstab\\|.*hosts\\|lesskey\\|login\\.?de\\(?:fs\\|vperm\\)\\|magic\\|mtab\\|pam\\.d/.*\\|permissions\\(?:\\.d/.+\\)?\\|protocols\\|rpc\\|services\\)\\'" . conf-space-mode)
("\\`/etc/\\(?:acpid?/.+\\|aliases\\(?:\\.d/.+\\)?\\|default/.+\\|group-?\\|hosts\\..+\\|inittab\\|ksysguarddrc\\|opera6rc\\|passwd-?\\|shadow-?\\|sysconfig/.+\\)\\'" . conf-mode)
;; ChangeLog.old etc.  Other change-log-mode entries are above;
;; this has lower priority to avoid matching changelog.sgml etc.
("[cC]hange[lL]og[-.][-0-9a-z]+\\'" . change-log-mode)
;; either user's dot-files or under /etc or some such
("/\\.?\\(?:gitconfig\\|gnokiirc\\|hgrc\\|kde.*rc\\|mime\\.types\\|wgetrc\\)\\'" . conf-mode)
;; alas not all ~/.*rc files are like this
("/\\.\\(?:enigma\\|gltron\\|gtk\\|hxplayer\\|net\\|neverball\\|qt/.+\\|realplayer\\|scummvm\\|sversion\\|sylpheed/.+\\|xmp\\)rc\\'" . conf-mode)
("/\\.\\(?:gdbtkinit\\|grip\\|orbital/.+txt\\|rhosts\\|tuxracer/options\\)\\'" . conf-mode)
("/\\.?X\\(?:default\\|resource\\|re\\)s\\>" . conf-xdefaults-mode)
("/X11.+app-defaults/\\|\\.ad\\'" . conf-xdefaults-mode)
("/X11.+locale/.+/Compose\\'" . conf-colon-mode)
;; this contains everything twice, with space and with colon 🙁
("/X11.+locale/compose\\.dir\\'" . conf-javaprop-mode)