[docs] Bug in documentation

[Ovidiu Durbalau]

In the following page:

https://docs.python.org/3.5/howto/regex.html#matching-characters



The following 2 paragraphs are contradictory:



Metacharacters are not active inside classes. For example, [akm$] will
match any of the characters 'a', 'k', 'm', or '$'; '$' is usually a
metacharacter, but inside a character class it’s stripped of its special
nature.

You can match the characters not listed within the class by *complementing* the
set. This is indicated by including a '^' as the first character of the
class; '^' outside a character class will simply match the '^'character. For
example, [^5] will match any character except '5'.

The first paragraph says metacharacters are not active inside character
classes.

The second paragraph shows an example of a metacharacter in a character
class having some “special nature”. In the example, it is treated as the
inverse or complement.

-- 
Ovidiu Durbalau


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