<< compatibility_level = 3
<< 
<< ${ {$compatibility_level} ==level {3.0} ? {good} : {bad} }
stat=0 result=good
<< ${ {$compatibility_level} !=level {3.0} ? {bad} : {good} }
stat=0 result=good
<< ${ {$compatibility_level} ==level {3.10} ? {bad} : {good} }
stat=0 result=good
<< ${ {$compatibility_level} !=level {3.10} ? {good} : {bad} }
stat=0 result=good
<< ${ {$compatibility_level} <level {4} ? {good} : {bad} }
stat=0 result=good
<< ${ {$compatibility_level} <=level {4} ? {good} : {bad} }
stat=0 result=good
<< ${ {$compatibility_level} <level {2} ? {bad} : {good} }
stat=0 result=good
<< ${ {$compatibility_level} <=level {2} ? {bad} : {good} }
stat=0 result=good
<< ${ {$compatibility_level} <=level {3.0} ? {good} : {bad} }
stat=0 result=good
<< ${ {$compatibility_level} >level {4} ? {bad} : {good} }
stat=0 result=good
<< ${ {$compatibility_level} >=level {4} ? {bad} : {good} }
stat=0 result=good
<< ${ {$compatibility_level} >level {2} ? {good} : {bad} }
stat=0 result=good
<< ${ {$compatibility_level} >=level {2} ? {good} : {bad} }
stat=0 result=good
<< ${ {$compatibility_level} >=level {3.0} ? {good} : {bad} }
stat=0 result=good
<< ${ {$compatibility_level} >=level {3A} ? {error} : {error} }
unknown: warning: malformed compatibility level syntax: "3A"
stat=1 result=
<< ${ {$compatibility_level} >=level {3.} ? {error} : {error} }
unknown: warning: malformed compatibility level syntax: "3."
stat=1 result=
<< ${ {$compatibility_level} >=level {.1} ? {error} : {error} }
unknown: warning: malformed compatibility level syntax: ".1"
stat=1 result=
<< ${ {3} > {3.2} ? {bad} : {good} }
stat=0 result=good
<< ${ {3} >level {3.2} ? {bad} : {good} }
stat=0 result=good
<< ${ {3} < {3.2} ? {good} : {bad} }
stat=0 result=good
<< ${ {3} <level {3.2} ? {good} : {bad} }
stat=0 result=good
<< ${ {3.10} > {3.2} ? {bad} : {good} }
stat=0 result=good
<< ${ {3.10} >level {3.2} ? {good} : {bad} }
stat=0 result=good
<< ${ {3.10} < {3.2} ? {good} : {bad} }
stat=0 result=good
<< ${ {3.10} <level {3.2} ? {bad} : {good} }
stat=0 result=good