Dear Dale,
Unfortunately, lack of documentation is not what I hint at. I believe there are many, many documents. What the three cases (and many others) have in common is the simple fact that the vast majority of the respective populations (Goan, French, Portuguese) offered no resistance to the regimes in question, lived quietly and peacefully through them and only occasionally, very occasionally, did the freedom fighter ultra-minority obtain active support for the population at large. More: a considerable amount of people, in Goa, in France, in Portugal, actively cooperated with the ruling powers of the time. This has been more that proved for the French case, and this alone prevents a reliable history of French resistance being told: nobody wants it.
There is another angle, an even more problematic one: the history of the freedom fighters who cooperated with the police. We don't like to be reminded of the sad history of those who were broken by torture and even of those who went all the way and started working for the police in result of having broken under torture.
We want even less to remember the others: those who worked with the police out of simple fear.
And finally there were the traitors, the double agents.
The real world is a murky world.
But it is not an even world: repression in France was unbelievably brutal. In Portugal, some resistant were treated with great harshness (communists), others with utter brutality (resistant in Portuguese Africa), many more leniently (bourgeois opposition in Portugal, except when they recurred to arms: my mother, an upper class lady, was brutally tortured, for instance, because she was an accomplice of my father in an armed attempt at overthrowing Salazar).
In Goa, as far as I know, there was no real brutality except occasionally. This probably explains why so few of the freedom fighters I have read about were treated with real harshness and so many were almost friendly with the police or the authorities. Of course, Salazar wanted no trouble in Goa, to keep Nehru hesitating. But there were other reasons too: Goan nattionalists were by and large not communists. Between the colonial authorities and the armed resistence there were one million shades of grey.
Yes hagiography is a problem. Because we need saints and we like to forget about our demons or about our reality as common people.
Best
Pvg