Error in parsing SVG: Unexpected end

[JoKalliauer]

Processing file: https://commons.wikimedia.org/wiki/File:Tsumeshogi-classic.svg with

svgo -i Tsumeshogi-classic.svg -o output.svg

lead to an error:
Error in parsing SVG: Unexpected end

minimal working example (W3C-Valid file):
min.svg.txt

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
  "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"
  [
  <!-- Set the characters used for pieces here.
   The use of entities is the reason why the doctype is included,
   even though it's known to cause some problems. -->
]>

<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:xlink="http://www.w3.org/1999/xlink"
     version="1.1"
     width="226px" height="201px">
<text x="5" y="2">9</text>
</svg>

I think svgo has a prpblem with the comment in the doctype.

[GreLI]

Yep, SVGO is based on SAX parser which has such issues.

[XhmikosR]

@TrySound this doesn't throw any error but results in an empty file with v2.1.0:

C:\Users\xmr\Desktop>svgo 1.svg --pretty -o 2.svg

1.svg:
Done in 5 ms!
0.492 KiB - 100% = 0 KiB

Shouldn't it throw an error if it has trouble parsing it?

[TrySound]

I will fix parsing soon