Re: sed bug

[Paolo Bonzini]

Il 14/02/2013 10:12, Slawomir Kuszczynski ha scritto:
> 
> Result of this simple sed:
> echo ABC1234_1.0 | sed -r 's/^[A-Z]*([0-9])/\1/'
> is:
> 1234_1.0
> but should be:
> 1
> 
> This not happen in python2.7 and python3.2:
> $ python -c "import re; print(re.sub(r'^[a-zA-Z]*([0-9]).*',r'\1',
> 'ABC1234_1.0'))"
> 1

The regular expressions are different in the two cases.  You removed the
.* in the sed version.

$ echo ABC1234_1.0 | sed -r 's/^[A-Z]*([0-9]).*/\1/'
1

Paolo