On Sat, 25 Jun 2016, Wolfgang Schuster wrote:

>> Aditya Mahajan <mailto:adityam@umich.edu>
>> 24. Juni 2016 um 21:19
>> Hi,
>> 
>> This is based on a question on tex.sx:
>> http://tex.stackexchange.com/q/316504/323
>> 
>> In file-job.lua, we have:
>> 
>> local processors = utilities.storage.allocate {
>>     ...
>>     [v_product] = {
>>         [v_text]        = { "many", processfilemany },
>>         [v_project]     = { "once", processfileonce },
>>         [v_environment] = { "once", processfileonce },
>>         [v_product]     = { "many", processfilemany },
>>         [v_component]   = { "many", processfilemany },
>>     },
>>     [v_component] = {
>>         [v_text]        = { "many", processfilemany },
>>         [v_project]     = { "once", processfileonce },
>>         [v_environment] = { "once", processfileonce },
>>         [v_product]     = { "none", processfilenone },
>>         [v_component]   = { "many", processfilemany },
>>     }
>> }
>> 
>> Then, why is the product file processed multiple times?
> The rules for a component files are applied *after* \startcomponent
> which isn’t the case for the example where in the first iteration
> the "text" rules are applied and in the following iteration the rules
> for a product file.
>
> Moving \product … after \startcomponent prevents the loop but
> the environment won’t be loaded anymore because the product
> file isn’t loaded anymore.

So, what's the recommended alternative? One could move the \environment to 
the components, but that can lead to a lot of repetitions (if there are 
many environments).

Aditya