fix: address PR review comments

- Add TestGetCommits, TestGetCommitsNoCommits, TestGetCommitsSingleCommit
  for full coverage of the new GetCommits method
- Add --fill-verbose to hasBodyFlag check so we don't override user's
  explicit body generation request
- Document GetPRTitles limitation for very large stacks (100+ PRs)
- Document porcelain output format in printPorcelain function comment

Author: boneskull

cmd/log.go

@@ -104,6 +104,15 @@ func printTree(node *tree.Node, prefix string, isLast bool, current string, gh *
 	}
 }
 
+// printPorcelain outputs machine-readable tab-separated format:
+// BRANCH<tab>PARENT<tab>PR_NUMBER<tab>IS_CURRENT<tab>PR_URL
+//
+// Fields:
+//   - BRANCH: branch name
+//   - PARENT: parent branch name (empty for trunk)
+//   - PR_NUMBER: associated PR number (0 if none)
+//   - IS_CURRENT: "1" if current branch, "0" otherwise
+//   - PR_URL: full PR URL (empty if no PR or GitHub client unavailable)
 func printPorcelain(node *tree.Node, current string, gh *github.Client) {
 	var printNode func(*tree.Node, int)
 	printNode = func(n *tree.Node, depth int) {

cmd/pr.go

@@ -176,8 +176,8 @@ func hasBodyFlag(args []string) bool {
 		if arg == "--fill" || arg == "-f" {
 			return true
 		}
-		// Check for --fill-first
-		if arg == "--fill-first" {
+		// Check for --fill-first or --fill-verbose
+		if arg == "--fill-first" || arg == "--fill-verbose" {
 			return true
 		}
 		// Check for combined short flags like -bf

internal/git/git_test.go

@@ -256,3 +256,97 @@ func TestNeedsRebase(t *testing.T) {
 		t.Error("feature should need rebase after main moved forward")
 	}
 }
+
+func TestGetCommits(t *testing.T) {
+	dir := setupTestRepo(t)
+	g := git.New(dir)
+
+	current, _ := g.CurrentBranch()
+
+	// Create feature branch and add commits
+	g.CreateAndCheckout("feature")
+
+	// Commit 1: subject only
+	os.WriteFile(filepath.Join(dir, "file1.txt"), []byte("content1"), 0644)
+	exec.Command("git", "-C", dir, "add", ".").Run()
+	exec.Command("git", "-C", dir, "commit", "-m", "feat: first commit").Run()
+
+	// Commit 2: subject and body
+	os.WriteFile(filepath.Join(dir, "file2.txt"), []byte("content2"), 0644)
+	exec.Command("git", "-C", dir, "add", ".").Run()
+	exec.Command("git", "-C", dir, "commit", "-m", "feat: second commit\n\nThis is the body of the commit.\nIt has multiple lines.").Run()
+
+	// Get commits between main and feature
+	commits, err := g.GetCommits(current, "feature")
+	if err != nil {
+		t.Fatalf("GetCommits failed: %v", err)
+	}
+
+	if len(commits) != 2 {
+		t.Fatalf("expected 2 commits, got %d", len(commits))
+	}
+
+	// Commits are in reverse chronological order (newest first)
+	if commits[0].Subject != "feat: second commit" {
+		t.Errorf("expected first commit subject 'feat: second commit', got %q", commits[0].Subject)
+	}
+	if commits[0].Body == "" {
+		t.Error("expected first commit to have a body")
+	}
+
+	if commits[1].Subject != "feat: first commit" {
+		t.Errorf("expected second commit subject 'feat: first commit', got %q", commits[1].Subject)
+	}
+	if commits[1].Body != "" {
+		t.Errorf("expected second commit to have no body, got %q", commits[1].Body)
+	}
+}
+
+func TestGetCommitsNoCommits(t *testing.T) {
+	dir := setupTestRepo(t)
+	g := git.New(dir)
+
+	current, _ := g.CurrentBranch()
+
+	// Create feature branch at same commit (no new commits)
+	g.CreateBranch("feature")
+
+	// Should return empty slice
+	commits, err := g.GetCommits(current, "feature")
+	if err != nil {
+		t.Fatalf("GetCommits failed: %v", err)
+	}
+
+	if len(commits) != 0 {
+		t.Errorf("expected 0 commits, got %d", len(commits))
+	}
+}
+
+func TestGetCommitsSingleCommit(t *testing.T) {
+	dir := setupTestRepo(t)
+	g := git.New(dir)
+
+	current, _ := g.CurrentBranch()
+
+	// Create feature branch with one commit
+	g.CreateAndCheckout("feature")
+	os.WriteFile(filepath.Join(dir, "single.txt"), []byte("single"), 0644)
+	exec.Command("git", "-C", dir, "add", ".").Run()
+	exec.Command("git", "-C", dir, "commit", "-m", "fix: single commit\n\nThis fixes the bug.").Run()
+
+	commits, err := g.GetCommits(current, "feature")
+	if err != nil {
+		t.Fatalf("GetCommits failed: %v", err)
+	}
+
+	if len(commits) != 1 {
+		t.Fatalf("expected 1 commit, got %d", len(commits))
+	}
+
+	if commits[0].Subject != "fix: single commit" {
+		t.Errorf("expected subject 'fix: single commit', got %q", commits[0].Subject)
+	}
+	if commits[0].Body != "This fixes the bug." {
+		t.Errorf("expected body 'This fixes the bug.', got %q", commits[0].Body)
+	}
+}

internal/github/github.go

@@ -40,6 +40,10 @@ type PRInfo struct {
 
 // GetPRTitles fetches titles for multiple PRs in a single GraphQL request.
 // Returns a map of PR number to PRInfo. PRs that don't exist are omitted.
+//
+// Note: This builds a single GraphQL query with all PR requests. For extremely
+// large stacks (100+ PRs), this could potentially hit query size limits. In
+// practice, stacks rarely exceed 10-20 PRs, so batching is not implemented.
 func (c *Client) GetPRTitles(prNumbers []int) (map[int]PRInfo, error) {
 	if len(prNumbers) == 0 {
 		return make(map[int]PRInfo), nil