Answer the review: one home per contract, and cover the matching's last branch

src/markdown-escaping.ts

@@ -257,9 +257,6 @@ function runLength(scan: string, index: number): number {
   return length
 }
 
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-
-
 function charAt(text: string, index: number): string {
   return index < 0 ? '' : text.charAt(index)
 }