Name formatOps' held entry firstReach, and checkNameHeld's path spelling path

format.go

@@ -382,26 +382,26 @@ type op struct {
 type formatOps struct {
 	ops       []op
 	grow      int
-	held      map[string]heldName
+	held      map[string]firstReach
 	heldLocal bool // some held name is not a reference path, so expand makes a hold
 }
 
-// heldName is how a format first reaches a held name: the reader holding it, for
+// firstReach is how a format first reaches a held name: the reader holding it, for
 // error messages, and the first path starting from it, "" where none does.
-type heldName struct {
+type firstReach struct {
 	holder string
 	path   string
 }
 
 func (c *formatOps) holdName(a arm, label string) {
 	if c.held == nil {
-		c.held = map[string]heldName{}
+		c.held = map[string]firstReach{}
 	}
 	if !isRef(a.head) || len(a.tail) == 0 {
 		c.heldLocal = true
 	}
-	h, named := c.held[a.head]
+	h, seen := c.held[a.head]
-	if !named {
+	if !seen {
 		h.holder = label
 	}
 	if len(a.tail) > 0 && h.path == "" {

holdfence.go

@@ -71,14 +71,14 @@ func checkNameHeld(t *template, name string, readers []reader) error {
 	if len(held) == 0 {
 		return nil // a fixed head holds nothing to reach
 	}
-	reader := t.compiled.held[name].path
+	path := t.compiled.held[name].path
 	seen := map[node]bool{}
 	for _, e := range renderEdges(t) {
 		if e.read.head == name || !renders(e.to, held, seen) {
 			continue
 		}
-		if reader != "" {
+		if path != "" {
-			return fmt.Errorf("%s renders %q, which {%s} reads a path into; name the fields you want instead", e.reached(), name, reader)
+			return fmt.Errorf("%s renders %q, which {%s} reads a path into; name the fields you want instead", e.reached(), name, path)
 		}
 		return fmt.Errorf("%s renders %q, which a {%s()} also reads; reach it one way so it is drawn once", e.reached(), name, operandReader(t, name))
 	}