pp_ser data directive IF condition ignored

[phmarti]

The data directive processed by pp_ser allows an IF condition to enable/disable the serialization. The regex pattern matches IF . This behaviour leads to hard to fine bugs/errors as for example:

Example 1 (wrong):
!$ser data arr=arr IF(ASSOCIATED(arr))
In this the case the condition is ignored and pp_ser doesn't generate the expected IF condition.

Example 2(correct):
!$ser data arr=arr IF (ASSOCIATED(arr))
In this case the expected code is generated including the IF condition.

There should at least be a warning when the condition is ignored!

Changing the regex to IF is most likely a bad idea as it will match too many things.