Bibtex parsing error doesn't show location

[girving]

There is presumably an error somewhere in my bibliography, since I get Uncaught Token mismatch, expected }, found . This error isn't very informative, since it doesn't include a location and what is found is apparently the empty string.

Ah, figured it out. I had copied a bibliography entry with word wrap off, which gave

@article{silver2017alphazero,
   title={Mastering Chess and Shogi by Self-Play with a General Reinforcement Learning Algorithm},
   author={Silver, David and Hubert, Thomas and Schrittwieser, Julian and Antonoglou, Ioannis and Lai, Matthew and Guez
   journal={arXiv preprint arXiv:1712.01815},
   year={2017}
 }

The author line was missing a closing }. There are two ways this experience could be improved:

1. If what is found is EOF, say that instead of found .
2. In general, give location information in error messages.

Not sure if these are easy to do with the current parsing mechanism.

[girving]

@ludwigschubert Should we just close this one?