It is well-known that Grothendieck's "esquisse d'un programme" was submitted in 1984 as part as the author's application for a permanent position of "Directeur de Recherche" at the C.N.R.S. (the main public research institute in France, which employs thousands of full-time researchers.) This came after Grothendieck had resigned from his professorship at I.H.E.S. and spent a few years as a professor at the university of Montpellier. All of this is for instance written in Esquisse d'un programme itself, or in Recoltes et Semailles.
What I don't know for sure is: what happened to his application to the C.N.R.S. ? Did he get a permanent position? Another kind of position? Nothing? If he got some offer, did he accept it or refused it? If he accepted an offer, did he effectively hold it , and when, how and why did he eventually quit it (I assume he did, because before long he disappeared almost completely.)
Now, wikipedia (in the Esquisse d'un programme page) says something about it, namely that the application was successful and the position held from 84 to 88. It refers to an article in science news, which doesn't say more if my memories don't fail me. However, I had asked this to question various people in France receiving as many different answers as persons I asked. So I would like confirmation of this point by knowledgeable people (either by direct witnesses, or by someone having evidences). Moreover, this wikipedia sentence just answers part of the question: it doesn't tell what kind of position Grothendieck got, if he effectively held it, and why and how he quitted.
On the other hand, this is a public event of which all or most participants are still alive, so it should be relatively easy to get a knowledgeable answer. I apologize that my question has absolutely no mathematical content, but there is a long sequence of well-accepted precedent questions about some aspects of the life of famous mathematicians and also about mathematical institutions.