From: Peter <Peter.Vanbroekhoven@...>
Date: 2003-09-17T08:04:18+09:00
Subject: Re: #{} and \" don't like each other

> As you may have already discovered, the following gives the expected 
> results:
> 
> print "<user #{"name=" + name + ""}></user>"

It does not since I want quotes around the name...

> In the variable assignment, you need to escape the quotes because 
> otherwise the literal string you are creating would be considered 
> terminated. Inside a literal string, inside #{}, it's not necessary, 
> because we indicate the end of the expression to be interpolated with 
> an unescaped '}'. In addition, if we interpreted '\"' inside #{}, we 
> would not be able to terminate the parent string literal after the 
> appearance of '#{', which would be bad (because there is a sequence of 
> characters we can't put in a string literal, ever).

I really don't see the problem with interpreting what I wrote. On
encountering '#{' in a string literal, anything up to the first unbalanced
'}' can be interpreted as any general ruby expression, including '\"' in
string literals within that expression, and after encountering the
unbalanced '}' the reading of the original string is resumed until the
closing quote. AFAICS, it is grammatically perfectly sound.

Maybe we should ask Matz...

Peter