get string how it is defined

[bhojendra]

Ah, that doesn't help me. What I'm trying to do is combine that string in previous string. For eg.

str = "{a:"
str += "some \" quoted value'foo"
str += "}"

Which should result in:

# {a:"some \" quoted value'foo"}
# But not:
# {a:"some " quoted value\'foo"}

So, what I want is what user has inputed exactly.