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based on https://www.reddit.com/r/vim/comments/24g8r8/italics_in_terminal_vim_and_tmux/

• Check if italic font is supported:

$ echo -e "\e[3mitalic\e[23m"

• Also check:

$ infocmp $TERM | grep sitm
 sgr0=\E(B\E[m, sitm=\E[3m, smacs=\E(0, smam=\E[?7h,

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Installing and configuring dwm on OS X (tested on Mountain Lion, Mavericks)

1. Install XQuartz.

2. Install dwm using Homebrew (or whatever):

   brew install dwm
   

3. Create a xinitrc.d script for dwm:

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//
//  NSObject+BlockObservation.h
//  Version 1.0
//
//  Andy Matuschak
//  andy@andymatuschak.org
//  Public domain because I love you. Let me know how you use it.
//

#import <Cocoa/Cocoa.h>

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# this goes in the $HOME dir
# needs mislav-rspactor v0.6.3 and RSpec 1.3
RSpactor::Runner.class_eval do
  alias old_formatter_opts spec_formatter_opts

  def spec_formatter_opts
    # update this path to where you saved unicode_formatter.rb
    old_formatter_opts + " -r /Users/mislav/Projects/unicode_formatter -f UnicodeFormatter"
  end
end