Fixed an issue in which the file path containing spaces could not be grepped

[ZeroOnePro]

When running a script on path "/home/foo bar/test.md", there was a problem that the file path was not grep properly like this

grep ./home/foo/: No such file or directory
grep bar: No such file or directory
grep name: No such file or directory
grep test.md No such file or directory

So I solved the problem by adding a comma to $gh_src

[ekalinin]

Thanks for the fix!
Could you, please, add some test for this case.

[ZeroOnePro]

I forgot about the test. added it please check
thanks a lot

[ZeroOnePro]

There was a problem when using it with the insert flag, but the test did not reflect it, so I modified it