Rename addField to gatherField and reachMemo to renderCounts, and list every shared name left

data.go

@@ -218,7 +218,7 @@ func checkScope(s nodeScope) error {
 // the walk. Its walks terminate only where nothing renders itself, so run it over a
 // loaded tree after checkNoCycles.
 func checkRenders(s nodeScope) error {
-	mem := reachMemo{}
+	mem := renderCounts{}
 	if err := s(func(path string, n node) error { return repeatCheck(path, n, mem) }); err != nil {
 		return err
 	}

graph.go

@@ -169,9 +169,9 @@ func pathLeaves(n node, tail []string) []node {
 	return out
 }
 
-type reachMemo map[node]int
+type renderCounts map[node]int
 
-func (m reachMemo) renderCount(n node) int {
+func (m renderCounts) renderCount(n node) int {
 	if r, done := m[n]; done {
 		return r
 	}
@@ -191,7 +191,7 @@ func (m reachMemo) renderCount(n node) int {
 // repeatCheck bounds the renders a repeat multiplies to along any root-to-leaf
 // path, so nested repeats cannot build what one repeat may not.
 // docs/decisions.md#the-repeat-cap-bounds-renders-not-bytes
-func repeatCheck(path string, n node, mem reachMemo) error {
+func repeatCheck(path string, n node, mem renderCounts) error {
 	if t, ok := n.(*template); ok && t.repeat > 1 && mem.renderCount(n) > MaxRepeat {
 		return fmt.Errorf("%s: repeat %d multiplies to %d renders along one path, above the maximum %d", path, t.repeat, mem.renderCount(n), MaxRepeat)
 	}

struct.go

@@ -123,19 +123,19 @@ func (sc *structCompile) spend(label string) error {
 	return fmt.Errorf(`%s: the struct fields reach more than %d structs; leave a struct field unfilled with fake:"-"`, label, maxStructs)
 }
 
-// gatherFields gathers the fields of struct type t, which sits at index within c.t.
+// t sits at index within c.t.
 func (c *structFields) gatherFields(t reflect.Type, index []int) error {
 	for i := 0; i < t.NumField(); i++ {
 		sf := t.Field(i)
 		sf.Index = append(index[:len(index):len(index)], i)
-		if err := c.addField(sf); err != nil {
+		if err := c.gatherField(sf); err != nil {
 			return err
 		}
 	}
 	return nil
 }
 
-func (c *structFields) addField(sf reflect.StructField) error {
+func (c *structFields) gatherField(sf reflect.StructField) error {
 	tag, tagged := sf.Tag.Lookup("fake")
 	elem := structOf(sf.Type)
 	switch {

todo.md

@@ -20,8 +20,9 @@ Self-sufficiency 5.6), every seat capped by Locality or Self-sufficiency.
 This round, in order:
 
 - Rename the shared names left that name two things, per the decision "One name, one
-  meaning": judge each of `check`, `draw`, `drawn`, `head`, `key`, `name`, `named`,
-  `names`, `null`, `number`, `record` and `variant`.
+  meaning": judge each of `check`, `children`, `column`, `columns`, `draw`, `drawn`,
+  `fields`, `format`, `head`, `index`, `key`, `n`, `name`, `named`, `names`, `null`,
+  `number`, `op`, `reads`, `record`, `root`, `row`, `t`, `variant` and `whole`.
 - Run the nine-seat panel again and file what it names here.
 
 ### Data