Why is there a question of order in this class of escaped characters in sed?
The character class
can be used to create a range (for example,
that is the entire character from
, not three characters
That way, when you write
, that is treated as a range from
(I don't think escaping
makes sense here).
But when you write the
interpretation of the range is not possible because the trailing
class cannot be the end of the range.
Likewise, if you wrote
, you would not have an interpretation of the range of this class.
As I said, while I don't think escaping any of these characters makes sense, it is actually what caused this problem as it
works the same and doesn't have a range issue.
a character class at the beginning negates the class, so if you want a literal
in the class, it doesn't have to be the first character in the class.
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