From: Peter <Peter.Vanbroekhoven@...>
Date: 2003-09-17T20:28:30+09:00
Subject: Re: #{} and \" don't like each other

> I suppose all such programs have warned during 1.8.0 period.

Well, it's not only about warnings. This is a transcript of a ruby
session:

  irb(main):001:0> print "<user#{" name=\"" + name + "\""}></user>\n"
  irb(main):002:-1/ mumble
  irb(main):003:-1/ jumble
  irb(main):004:-1/ /
  (irb):1: warning: escaped terminator '"' inside string interpolation
  SyntaxError: compile error
  (irb):4: unterminated string meets end of file
  (irb):4: syntax error
          from (irb):4
  irb(main):005:0>

There's the warning about the escaped '"', but also an error since I get
stuck in a regular expression because of the / in </user>. If I put the
print statement in a file and run ruby on it, it joyfully produces this:

  test.rb:1: warning: escaped terminator '"' inside string interpolation
  <user name= + name + ></user>

Still a warning, but no syntax error. The '\"' just becomes a '"' and then
'" name=\"" + name + "\""' is just interpreted as 3 strings in a row.

So there's a difference in parser behavior in irb and in ruby. Just so
you'd know.

Peter