From: "David A. Black" <dblack@...>
Date: 2008-03-26T07:58:16+09:00
Subject: Re: golf: tabs to bullets

Hi --

On Wed, 26 Mar 2008, ara howard wrote:

>
> On Mar 25, 2008, at 3:02 PM, Martin DeMello wrote:
>
>> Given:
>> an outline list, with each line indented by a series of tabs
>> a list of bullets (assume a circular list, for simplicity)
>> 
>> Write a function that replaces every tab with two spaces, except for
>> the last one, which is replaced by a bullet.
>> 
>> example:
>> 
>> input file:
>> foo
>> \t bar
>> \t \t baz
>> \t \t \t hello
>> \t \t world
>> 
>> bullets: %w(* - o x)
>
> cfp2:~ > cat a.rb
> DATA.read.gsub(%r/(?:\t\ ?)+/){|s|' '*(n=s.count("\t")-1)+%w(* - o x)[n]+' 
> '}.display

I don't think that does the two-space thing:

david-blacks-macbook:hacking dblack$ cat ara.rb 
<<EOM.gsub(%r/(?:\t\ ?)+/){|s|' '*(n=s.count("\t")-1)+%w(* - o x)[n]+'
'}.display
\t\t\ta
\t\tb
\t\t\t\tc
EOM
david-blacks-macbook:hacking dblack$ ruby ara.rb
   o a
  - b
    x c

Then again, mine didn't either....


David

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