4.3: a bare backtick run escapes wherever a later string of its length forms around an escape

spec/flavour.md

@@ -54,8 +54,10 @@ normalizes to it through the round-trip.
 - Entity references in input decode to their characters; output backslash-escapes only where text
   would otherwise parse as syntax, scanning the assembled line rather than each text node: escape
   the leading delimiter of a construct that would otherwise open, re-scan from there, and repeat.
-  A backtick run escapes whole, and a lone backtick escapes wherever an escaped one follows it in
-  the same inline content: CommonMark reads no escape inside a code span, so `` \` `` closes one.
+  A backtick run escapes whole, and a bare one escapes wherever a later backtick string of its
+  length forms around an escape in the same inline content — an escaped backtick alone, one joined
+  to the bare run after it, or a bare run an escape splits off: CommonMark reads no escape inside a
+  code span, so such a string still closes one.
   Where a paragraph opens with what reads as a link reference definition, which resolves before
   any inline construct binds (a `]` inside a code span or `{attrs}` counts), an opening text `[`
   escapes and an opening link's nodes ride the carry.