Description of problem:

I had a problem with debugging one test. The test incorrectly uses

rlIsRHEL "<=" 6 

call but since I didn't encounter the problem on the first sight it took me several minutes to find out the root cause.

IMHO the problem is that rlIsRHEL returns exit code 1 on syntax error which is similar to the case when the RHEL version simply doesn't match.

E.g. __INTERNAL_rlIsDistro() contains

  echo $distro | grep -q "$1" || return 1

or

    # sanity check - version needs to consist of numbers/dots/<=>
    [[ "$arg" =~ ^([\<=\>]*)([0-9][0-9\.]*)$ ]] || return 1


I would propose to use different exit code (99 or so) for syntax errors. Some error message on the output would be even better.

version:
beakerlib-1.9-3.el6eso.noarch