Re: An issue about gwak 3.1.1, is it a bug?

[Jürgen Kahrs]

高磊 wrote:

> Here is an issue of gawk, may be a bug :
..
> And then I wrote a command as:
> 
> $ awk 'FS="\t" gsub(/a/,"A",$1){print $0,NF}' a.log

What does this program really do ?
Remember that AWK expects "pattern - action" pairs.
Your FS="\t" is part of the pattern.
Is this what you intended ?
You probably intended

gawk 'BEGIN {FS="\t"}; gsub(/a/,"A",$1){print $0,NF}' a.log
bc 2Abc 1
3Abc 4abc 2
5Abc 6abc 2