Re: Why is "]" == "\]"?

[Johann Petrak <johann@mail4.ai.univie.ac.at>]

> "]" == "\]"
> 
> All tests said, that these two strings are equal. But how could I
> parse strings where "]" is command character or so but "\]" is legal
> syntax for using "]" as a normal character?
Since \ is an escape character in LISP you have to double it to 
get a string that actually contains the backslash. (see Steele CLtL2, p34)
(Undefined escape sequences may just ignore the backslash, thus "\["
is identical to "[").
So just double your backslash: "\\["

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