for the logic surrounding "found syntax errors", all files up to that point are reported as syntax error files

[pestophagous]

I think this is easy to fix.

Just change this: syntaxerrors="${list}${output}\n"

To this: syntaxerrors="${file}${output}\n"

On the following line:

https://github.com/edsrzf/gofmt-git-hook/blob/0cea7572f78ad4b32b9970b87bcbe3eac39d8f96/fmt-check#L13