bug with parentheses

[Sebastien Begue]

Hi,

With cfengine 2.1.10

i've got a problem with a shellcommand class

Configuration :
OUT                   = ( "/usr/bin/test $(VAR1) = OUT -o $(VAR2) = OUT 
-o $(VAR3) = OUT -o $(VAR3) = OUT" )

Debug :
Expansion gave (/usr/bin/test VAL1 = OUT -o VAL2 = OUT -o VAL3 = OUT -o 
VAL4)
cfpopen(/usr/bin/test VAL1 = OUT -o VAL2 = OUT -o VAL3 = OUT -o VAL4 = OUT)

And the output at execution :
cfagent.conf:<line number>: Variables in function with $() rather than 
${} - bug workaround

Before upgrade on 2.1.10, the 2.1.5 don't generate this problem.

Then i've change the construction of my classe with :
OUT                   = ( "/usr/bin/test ${VAR1} = OUT -o ${VAR2} = OUT 
-o ${VAR3} = OUT -o ${VAR3} = OUT" )
Now there is no problem at execution of cfagent...

Why there is a such behavior ?

In the documentation (tutorial) it says :
"Variables are referred to in either of two different ways, depending on 
your taste. You can use the forms $(variable) or ${variable}. The 
variable in braces or parentheses can be the name of any user defined 
macro, environment variable or one of the following special internal 
variables."

...

Sébastien