PGN's Reader?

[pokemonchw]

`

func main() {

    pgn, err := chess.PGN(strings.NewReader("\n1. d4 d5 2. Bf4 Nc6 3. e3 Qd6 4. Bxd6 exd6 5. Nc3 Nf6 6. Qf3 Bg4 7. Qf4 O-O-O 8. Nb1 Nb4 9. c3 Nxa2 10. Rxa2 Re8 11. f3 Bd7 12. h3 Nh5 13. Qxf7 Rxe3+ 14. Be2 Ng3 15. b4 Nxh1 16. Rxa7 Ng3 17. Ra8# 1-0"))

    if err != nil {

            fmt.Println(err.Error())

    }

    game := chess.NewGame(pgn)

    a := game.String()

    fmt.Println(a)

    _, err = chess.PGN(strings.NewReader(a))

    fmt.Println(err.Error())

}
`

now, its output:

`
1.d4 d5 2.Bf4 Nc6 3.e3 Qd6 4.Bxd6 exd6 5.Nc3 Nf6 6.Qf3 Bg4 7.Qf4 O-O-O 8.Nb1 Nb4 9.c3 Nxa2 10.Rxa2 Re8 11.f3 Bd7 12.h3 Nh5 13.Qxf7 Rxe3+ 14.Be2 Ng3 15.b4 Nxh1 16.Rxa7 Ng3 17.Ra8# 1-0

chess: pgn decode error chess: failed to decode notation text "1.d4" for position rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 on move 1

`

[amanjpro]

Oh, this issue is a different form of #78, but unfortunately #79 only fixes #78 not this one

[notnil]

Playground:
https://play.golang.org/p/mw2VF__sTap

Its strange that adding it to the fixtures/pgn folder and including it in a test DOESN'T cause the issue. Something along the line (unique to the chess.PGN entry point) is trimming the space between 1. and d4.

[sumnerevans]

I was able to reproduce this minimally:

package main

import (
	"log"
	"strings"

	"github.com/notnil/chess"
)

func main() {
	game := chess.NewGame()
	game.MoveStr("d4")
	pgn, err := chess.PGN(strings.NewReader(game.String()))
	if err != nil {
		log.Fatal(err)
	}
	newGame := chess.NewGame(pgn)
	log.Printf(newGame.FEN())
}

It seems like the PGN parser doesn't handle when there's no space between the number and the algebraic notation.