I was the main author on the manual you linked to. In 2012, Stallman contacted me about his new book, and with that forthcoming, I thought it made no sense for me to spend much more time on mine. So I never got quite finished it, and did only a few minor bug fix releases since then.
I did not know it was going to be ten years until his came out!
In any case, I did help him a bit on the new one, but not very recently. The main text, last I saw it, certainly spoke to the GCC dialect of C, and included some GCC historical footnotes, but the description he gave of the book sounds like he must have added even more GCC-specific content since I last saw a draft.
I did not know it was going to be ten years until his came out!
In any case, I did help him a bit on the new one, but not very recently. The main text, last I saw it, certainly spoke to the GCC dialect of C, and included some GCC historical footnotes, but the description he gave of the book sounds like he must have added even more GCC-specific content since I last saw a draft.