Filtering logs with filename fails if the file is altered in the first commit in the repository.

[tasdomas]

If Repository.Log is run with the FileName option, and the file is added as the first commit in the repository, the commit affecting that file will not be processed.

The following snippet reproduces the issue:

package main

import (
	"fmt"
	"path/filepath"
	"io/ioutil"

	git "github.com/go-git/go-git/v5"
	"github.com/go-git/go-git/v5/plumbing/object"
)

func main() {
	dir, _ := ioutil.TempDir("", "repo")

	repo, _ := git.PlainInit(dir, false)
	w, err := repo.Worktree()
	if err != nil {
		panic(err)
	}
	// If uncommented, the log result for file a.txt will be non-empty.
	/*
	ioutil.WriteFile(filepath.Join(dir, "b.txt"), []byte("abcd"), 0644)
	w.Add("b.txt")
	w.Commit("pre-initial commit", &git.CommitOptions{})
	*/
	ioutil.WriteFile(filepath.Join(dir, "a.txt"), []byte("abcd"), 0644)
	w.Add("a.txt")
	w.Commit("initial commit", &git.CommitOptions{})

	pth := "a.txt"
	commits, err := repo.Log(&git.LogOptions{FileName: &pth, All: true})
	if err != nil {
		panic(err)
	}
	err = commits.ForEach(func(c *object.Commit) error {
		fmt.Println(c.Hash.String()) // This will not be called.
		return nil
	})
	if err != nil {
		panic(err)
	}
}

[github-actions]

To help us keep things tidy and focus on the active tasks, we've introduced a stale bot to spot issues/PRs that haven't had any activity in a while.

This particular issue hasn't had any updates or activity in the past 90 days, so it's been labeled as 'stale'. If it remains inactive for the next 30 days, it'll be automatically closed.

We understand everyone's busy, but if this issue is still important to you, please feel free to add a comment or make an update to keep it active.

Thanks for your understanding and cooperation!