re documentation error

[Carlos Gaston Alvarez]

It seems like an error. If it is not, someone explain it to me please (and
update the doc).

Empty matches are replaced only when not they're not adjacent to a previous
match.


>>> p = re.compile('x*')
>>> p.sub('-', 'abxd')
'-a-b-d-'

I would expect the result to be.
'abd'
If the '-' is representing no char, an empty string (as the text says) then
I would like it to say
>>> p = re.compile('x*')
>>> p.sub('', 'abxd')
'abd'

Which is an example that does teachs nothing new.

is - an special char of re for representing nothing?
Dont think so.

Chau,

Gaston