[rt-users] Scrips being executed twice for a simple CF update

[Jeff Blaine]

Upon modification of one of our custom fields (text area),
we want to parse the data, perform a translation on the
original data, and store the results in the custom field.

Simplified/contrived example:

INPUT:

     Basics:

         OurField: 4 5 8 9 32 90

                                [SAVE]*click*

RESULT:

     Basics:

         OurField: X Y A B Z O

We're obviously using a Scrip to do this field processing.
It's not working out too hot, so I *must* be doing something
wrong.

===============================================================
# Name: ParseAndWrite_Ourfield
#
# User Defined
# User Defined
# Blank template
# TransactionCreate

Custom condition:

     if field changed
         return 1

Preparation:

     return 1

Clean-up:

     parse ourfield
     initialize final_string to ""
     for each item found:
         perform lookup
         append lookup result to final_string
     set OurField value to final_string
     return 1

===============================================================

With loads of RT::Logger debugging in place, everything appears
to be working fine except for the for the fact that the Scrip
is being called twice, and it's performing the change ... then
UNDOING IT:

Sep 10 16:24:39 rtdev2 RT: START SCRIP processing OurField
Sep 10 16:24:39 rtdev2 RT: OurField changed: OLD '' NEW '26 34'
Sep 10 16:24:39 rtdev2 RT: OurField: In main chunk
Sep 10 16:24:39 rtdev2 RT: OurField: 2 values found
Sep 10 16:24:39 rtdev2 RT: OurField: Processing: '26'
Sep 10 16:24:39 rtdev2 RT: OurField: Processing: '34'
Sep 10 16:24:39 rtdev2 RT: OurField: Final string: 'X Y'
Sep 10 16:24:39 rtdev2 RT: OurField reached final return 1
Sep 10 16:24:39 rtdev2 RT: START SCRIP processing OurField
Sep 10 16:24:39 rtdev2 RT: OurField changed: OLD 'X Y' NEW ''
Sep 10 16:24:39 rtdev2 RT: OurField: In main chunk
Sep 10 16:24:39 rtdev2 RT: OurField: 0 values found
Sep 10 16:24:39 rtdev2 RT: OurField: Final string empty, so clearing out 
OurField entirely
Sep 10 16:24:39 rtdev2 RT: OurField reached final return 1