bash function to generate a ruby-core changelog entry from most recent git commit

changelog output

~/projects/ruby $ changelog
Fri Oct 31 15:56:46 2014  Charles Oliver Nutter  <headius@headius.com>

	* object.c: Make a meaningless change to test changelog script.

changelog.bash

#!/bin/bash

changelog()
{
    TZ=jst
    git log --pretty=format:"%cd  %an  <%ae>%n%n%B" --date=local -1 | \
      ruby -n -e '$i ||= 0; puts "#{$i>1?"\t":""}#{$_}"; $i+=1'

    unset TZ
}