Skip symlinked outputs in the managed .gitignore

1 files changed, 28 insertions, 0 deletions

diff --git a/main.go b/main.go
index 299724e..96c1115 100644
--- a/main.go
+++ b/main.go
@@ -858,12 +858,40 @@ func (s *site) gitignore(outputs []string) ([]byte, error) {
 		if strings.ContainsAny(output, "\r\n") {
 			return nil, fmt.Errorf("cannot add output to .gitignore: %q", output)
 		}
+		symlinked, err := s.hasSymlinkedParent(output)
+		if err != nil {
+			return nil, err
+		}
+		if symlinked {
+			continue
+		}
 		kept.WriteString("/" + escapeGitignore(output) + "\n")
 	}
 	kept.WriteString(gitignoreEnd + "\n")
 	return []byte(kept.String()), nil
 }
 
+func (s *site) hasSymlinkedParent(output string) (bool, error) {
+	current := s.root
+	for _, part := range strings.Split(path.Dir(output), "/") {
+		if part == "." {
+			continue
+		}
+		current = filepath.Join(current, part)
+		info, err := os.Lstat(current)
+		if errors.Is(err, os.ErrNotExist) {
+			return false, nil
+		}
+		if err != nil {
+			return false, err
+		}
+		if info.Mode()&os.ModeSymlink != 0 {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
 func escapeGitignore(value string) string {
 	return strings.NewReplacer(
 		`\`, `\\`, " ", `\ `, "#", `\#`, "!", `\!`,