The space appears to trip up the dconv parser and `<var>` is used for other
converters.
# value, without leaking the contents using a timing attack.
acl token_given str(my_secret_token),secure_memcmp(txn.token)
-set-var(<var name>)
+set-var(<var>)
Sets a variable with the input content and returns the content on the output
as-is. The variable keeps the value and the associated input type. The name of
the variable starts with an indication about its scope. The scopes allowed are:
interpret the previous binary sample.
-unset-var(<var name>)
+unset-var(<var>)
Unsets a variable if the input content is defined. The name of the variable
starts with an indication about its scope. The scopes allowed are:
"proc" : the variable is shared with the whole process