Re: sed N command with relative addressing

Hi, thank you for reply.

2014-05-16 16:47 GMT+09:00 Paolo Bonzini <[email protected]>:
> $ seq 1 10 | sed -n '/[24680]/ {; 1,+3 p; }'
> $ seq 1 10 | sed -n '/[24680]/ {; 5,+3 p; }'
> $ seq 3 10 | sed -n '/[24680]/ {; /4/,+3 p; }'

Wow, they are more confusing.  I think no one can tell
why the followings are so different.

$ seq 1 10 | sed -n '/[1256789]/ {; 1,+3p; }'
1
2
5

$ seq 1 10 | sed -n '/[1256789]/ {; 2,+3p; }'
2
5

$ seq 1 10 | sed -n '/[1256789]/ {; 3,+3p; }'
5
6
7
8

I wish sed behavior is more intuitively predictable.

Regards,

-- 
Hiroto Kagotani
<[email protected]>