Matching is not exact as expected

What steps will reproduce the problem?
1. seq 1 50 | csvgrep.pl -u '$1 in "1 3 17 25"'

What is the expected output? What do you see instead?

Expected:
1
3
17
25

Observed:
1
2
3
5
7
17
25

What version of the product are you using? On what operating system?

csvgrep 1.0

RHEL 6.3

Please provide any additional information below.

Original issue reported on code.google.com by mbken...@gmail.com on 12 Jun 2013 at 12:21

wilsonfreitas / csvgrep

Matching is not exact as expected #10