tools/bump: stop commenting when applied areas change

Description already carries the outcome; the comment was noise.

tools/bump/pr.go

@@ -99,8 +99,7 @@ func publish(ctx context.Context, r *repo, opt publishOptions, results []result)
 		return err
 	}
 
-	now := markerOf(results, tree, head)
-	body := renderBody(results, now, opt.Gate)
+	body := renderBody(results, markerOf(results, tree, head), opt.Gate)
 
 	pr, err := lookupPR(ctx, r, opt.Slug, opt.Branch)
 	if err != nil {
@@ -114,7 +113,7 @@ func publish(ctx context.Context, r *repo, opt publishOptions, results []result)
 	}
 
 	if pr != nil && pr.State == "OPEN" {
-		return updateOpen(ctx, r, opt, pr, body, now)
+		return updateOpen(ctx, r, opt, pr, body)
 	}
 
 	if pr != nil && pr.State == "CLOSED" {
@@ -138,7 +137,7 @@ func publish(ctx context.Context, r *repo, opt publishOptions, results []result)
 
 // updateOpen refreshes an existing pull request in place, but refuses to
 // force-push over work the bot did not author.
-func updateOpen(ctx context.Context, r *repo, opt publishOptions, pr *prState, body string, now marker) error {
+func updateOpen(ctx context.Context, r *repo, opt publishOptions, pr *prState, body string) error {
 	prev, hadMarker := parseMarker(pr.Body)
 
 	remoteTip := remoteBranchSHA(ctx, r, opt.Remote, opt.Branch)
@@ -159,15 +158,6 @@ func updateOpen(ctx context.Context, r *repo, opt publishOptions, pr *prState, b
 		return err
 	}
 
-	// Only speak up when the outcome actually changed. A daily "still the
-	// same" comment trains the reader to ignore the thread.
-	if hadMarker && changedAreas(prev, now) {
-		if _, err := r.run(ctx, "gh", "pr", "comment", strconv.Itoa(pr.Number), "--repo", opt.Slug, //nolint:noinlineerr
-			"--body", "The set of applied areas changed since the last run; see the updated description."); err != nil {
-			return err
-		}
-	}
-
 	log.Printf("updated pull request #%d", pr.Number)
 
 	return nil

tools/bump/report.go

@@ -191,19 +191,3 @@ func cell(s string) string {
 
 	return s
 }
-
-// changedAreas reports whether the outcome differs from the last run, which is
-// what decides between silently updating the pull request and commenting on it.
-func changedAreas(prev marker, now marker) bool {
-	if len(prev.Areas) != len(now.Areas) {
-		return true
-	}
-
-	for name, st := range now.Areas {
-		if prev.Areas[name] != st {
-			return true
-		}
-	}
-
-	return false
-}

tools/bump/report_test.go

@@ -50,28 +50,6 @@ func TestParseMarkerAbsent(t *testing.T) {
 	}
 }
 
-func TestChangedAreas(t *testing.T) {
-	base := marker{Areas: map[string]string{"flake": "applied", "gomod": "applied"}}
-
-	tests := []struct {
-		name string
-		now  marker
-		want bool
-	}{
-		{name: "identical", now: marker{Areas: map[string]string{"flake": "applied", "gomod": "applied"}}},
-		{name: "state changed", now: marker{Areas: map[string]string{"flake": "applied", "gomod": "dropped"}}, want: true},
-		{name: "area added", now: marker{Areas: map[string]string{"flake": "applied", "gomod": "applied", "generate": "applied"}}, want: true},
-	}
-
-	for _, test := range tests {
-		t.Run(test.name, func(t *testing.T) {
-			if got := changedAreas(base, test.now); got != test.want {
-				t.Errorf("changedAreas = %v, want %v", got, test.want)
-			}
-		})
-	}
-}
-
 // A summary containing a pipe would otherwise split the markdown table.
 func TestCellEscapesTableBreakers(t *testing.T) {
 	got := cell("a | b\nc")