2014-10-27 flycheck http://d.hatena.ne.jp/syohex/20130123/1358950322 http://qiita.com/hottestseason/items/1e8a46ad1ebcf7d0e11c http://d.hatena.ne.jp/sugyan/20110510/1305036104 http://qiita.com/senda-akiha/items/cddb02cfdbc0c8c7bc2b http://www.emacswiki.org/emacs/Flycheck