[Note] rxvt-unicode settings in .Xdefaults

URxvt.buffered: true
URxvt.geometry: 80x24
URxvt.background: black
URxvt.foreground: lightgray

URxvt.font: xft:Terminus:pixelsize=10

URxvt.inputMethon: scim
URxvt.imLocale: zh_TW.UTF-8

URxvt.perl-ext: default, matcher
URxvt.urlLauncher: /usr/local/bin/firefox
URxvt.matcher.button: 1

URxvt.cursorUnderline: True
URxvt.cursorBlink: True

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