From: Hal Fulton <hal9000@...>
Date: 2003-09-17T07:29:04+09:00
Subject: Re: #{} and \" don't like each other

Peter wrote:
>>From the Programming Ruby book:
> <quote>
>   In addition, you can substitute the value of any Ruby expression
>   into a string using the sequence #{ expr }.
> </quote>
> 
> Up to about an hour ago, I never doubted this statement. I've stumbled
> upon the following example which is not accepted by ruby.

Fulton's Third Law says that there is an exception to every rule,
except Fulton's Third Law.

> Can someone please tell me whether this is a bug, or otherwise why I
> shouldn't have done the above.

Truthfully, I'm not sure why this happens. But since the
warning is accurate and explicit, I don't think it's a bug,
but perhaps one of those features that's it's not immediately
obvious we need.

FWIW, this avoids it:

   name = "peter"
   print "<user name=\"#{name}\"></user>"

So it evidently has to do specifically with the escaped terminator
*inside* the interpolated part.

Hal