Verbal noun question
I think I've asked about this before, but I don't know how to find it.
When saying something like, "I am going to learn Irish", GnaG says this: form of bí + subject + ag dul ag + VN + genitive-object, so the phrase becomes Tá mé ag dúl ag foghlaim Gaeilge. Would it be at all acceptable to say Tá mé ag dul Gaeilge a fhoghlaim instead? If not, why? It says this kind of construction can be used with ar tí, ag brath or chun, though. Could you tell me, if you know, which one is most common in Ulster? Thanks.
Dinneen didn’t note any dialectal preference for any of ar tí, ag brath, or chun. (He didn’t show an example of the ag dul usage, so that might be a 20th century English calque.)
If you want to know which is more common in Ulster Irish, I suggest going to http://www.irishlanguageforum.com/ and asking there. There's several knowledgeable Ulster Irish speakers. I suggest looking at Lughaidh, who even writes in Ulster Irish. The people there are also more generally knowledgeable than the majority here.
As for if you can do that structure with ag dul, the answer is no. It's ag dul ag. Also, I think your example would be better as Ag dul ag foghlaim na Gaeilge. Generally, in senses like that, languages get the definite article.