Answer prose round 1: 0 🔴, 6 🟡 (0 misread); reword the spanning comments, spec and changelog entry

src/markdown/emit/skipped-nodes.ts

@@ -6,13 +6,13 @@ import { takesMark } from '../../adf/inline-nodes.ts'
 
 type Carries = (node: AdfNode, index: number) => boolean
 
-// The nodes, each that an emphasis or link run skips between two nodes it marks holding the run's mark at the run's depth, or `nodes` itself where no run skips one.
+// Lends each emphasis or link run's mark to the nodes inside the run that cannot hold it; returns `nodes` itself where no run skips a node.
 export function spanSkippedNodes(nodes: readonly AdfNode[], carries: Carries): readonly AdfNode[] {
   const spanned = [...nodes]
   return spanRuns(spanned, 0, spanned.length, 0, carries) ? spanned : nodes
 }
 
-// Groups the runs as `inlineRuns` does, then lends each run's mark to the nodes it skips; returns whether it lent any.
+// Groups the runs as `inlineRuns` does.
 function spanRuns(spanned: AdfNode[], first: number, end: number, depth: number, carries: Carries): boolean {
   if (depth > largestNesting) return false
   let lent = false

src/markdown/portable/inline-reduction.ts

@@ -166,7 +166,7 @@ export function trimmedEdges(leaves: readonly AdfNode[]): AdfNode[] {
   // Terminates: a pass that changes a leaf drops whitespace from the leaf's edge or takes a mark off that whitespace, and merging adds no whitespace or mark.
   for (let current = leaves; ; ) {
     const merged = withoutEdgeBreaks(mergeAdjacentText(current, joinsWhenEditorNormal))
-    // Whitespace beside a code span a run spans keeps the run's mark, where the line written spanned reads it.
+    // Whitespace beside a code span inside a run keeps the run's mark, since the writer spans the run across the code.
     const spanned = spanSkippedNodes(merged, () => false)
     let changed = false
     const trimmed: AdfNode[] = []