THE artist and writer Alasdair Gray is to make a return to Edinburgh's International Book Fest two years after suffering a disastrous accident at his home in Glasgow.

Gray, the author of Lanark, is to make a surprise return to the book festival, which starts this weekend, as a special guest for the tribute evening arranged to celebrate the memory and achievements of the late Stephanie Wolfe Murray.

The co-founder of Canongate Books, Ms Wolfe Murray published Lanark, considered to be one of the great modern Scottish novels, and Gray, who has largely recovered from his fall, will take part in the event on August 23.

Nick Barley, director of the festival, said he was delighted Gray had agreed to travel to the capital for the event, which is free but ticketed.

On the eve of the 2017 book festival, which this year has expanded its venues into George Street, Barley also spoke about the current generation of Scottish writers, and suggested it had not fully emerged in a way that achieved by a previous generation, featuring writers such as Alan Warner, Ali Smith and Louise Welsh.

Barley said that writers such as Jenni Fagan, whose acclaimed books include The Panopticon and The Sunlight Pilgrims, and Malachy Tallack, author of 60 Degrees North, have great talent but they are part of a group of younger writers that has not yet emerged as a cohesive literary 'generation'.

Barley said the festival's Outriders project, featuring writers such as Fagan, Tallack, Stef Smith, Harry Giles and Kevin MacNeil, had been part of its contribution to assisting this wave of talent.

He said: "I think whether it's in art or writing or theatre, you tend to get generational waves, and in the literary scene we have enjoyed an extraordinary generation, which includes Alan Warner, Louise Welsh, Ali Smith, who are now the established generation of Scottish writers, and they are still in their purple patch.

"The question is what is coming after them, where is the next generation? My feeling is that there is a really, really powerful next generation of writers....but have they cohered into what you might call a 'generation'? I don't think they have yet.

"I think our responsibility as publishers, festivals and media is to try and find a framework in which they can feel themselves to be a generation, and when that comes together I think it will be incredibly powerful.

"It's not that the talent is lacking, it's that sense of a kind of collective ability to understand each others work, hasn't quite come together yet."

Barley added there is as yet no collective "narrative" about Scotland's emerging writers.

He said: "If you want to talk about a 'generation' there does need to be some sense of collective - 25 years ago when I used to visit Glasgow I would visit one artist, and they would say, 'come and see my friends studio'...there was a sense of being one among many.

"There is absolutely no question that Scotland has literary talent which is easily as good as what we saw in a previous generation, the question is about how we get the perceptions of that to match the talent in our ranks."

Gray will appear at the event along with Mairi Hedderwick, Alexander McCall Smith, Tom Pow and Kim Wolfe Murray, chaired by Canongate’s director Jamie Byng.

Mr Barley said: "Alasdair Gray is back in the programme, which I am so happy about.

"Alasdair is going to be reading from Lanark, as Stephanie Wolfe Murray was brave enough to commission and publish Lanark.

"I am really thrilled that he is willing to come out and make that contribution.

"We hope people come along to not only mark her passing but also celebrate that Alasdair is back in public life.

"I have to admit that with a great sadness I thought we had seen the last of Alasdair on the festival stage, but it is so brilliant that he is back."

Barley also said the winner of the Man Booker International Prize for Fiction, David Grossman, will be appearing at the festival on August 16.

On the expansion into George Street, Mr Barley said it was an "experiment" and a "one-off".

He said: "This is an experiment to see how it feels, and if we succeed in bringing in more people, different kinds of people, then we are constructing an argument to do it again."