Answer product-owner round 1: 0 🔴, 0 🟡; scope only backtick runs to outside a directive, and name the kept closer codeSpanCloser

CHANGELOG.md

@@ -16,9 +16,9 @@
   table cell: `[alt](href) ([image](url))`, where it wrote `[alt](url)` and dropped the link's target.
 - `losslessMarkdownToAdf` names the CommonMark spelling to write when it refuses a directive whose
   node CommonMark spells, such as `[![alt](url)](href)` for a linked `!adf:mediaSingle`.
-- Every reader and writer takes time linear in a text holding many unclosed backtick runs, or many
-  `<!--`, `<?`, `<![CDATA[` or `<!` openers without a terminator, outside a directive's `[content]`,
-  where such a text took time quadratic in its length: 160k characters of `<?` took seven seconds
+- Every reader and writer takes time linear in a text holding many `<!--`, `<?`, `<![CDATA[` or `<!`
+  openers without a terminator, or many unclosed backtick runs outside a directive's `[content]`,
+  where such a text took time quadratic in its length: 160000 characters of `<?` took seven seconds
   each way, now 50 ms.
 - The README compares the package with seven other ADF converters, each checked against its
   published version.

src/markdown/inline-tokens.ts

@@ -20,14 +20,14 @@ export type InlineToken =
 
 // A text and what its openers look ahead for, read once, so a walk reading a token at every index stays linear in it.
 export type InlineSource = {
-  readonly closingBacktickRun: (from: number, opener: number) => number | undefined
+  readonly codeSpanCloser: (from: number, opener: number) => number | undefined
   // Each HTML construct terminator's last start in the text, -1 for none, read the first time an opener asks.
   readonly terminators: Map<string, number>
   readonly text: string
 }
 
 export function inlineSource(text: string): InlineSource {
-  return { closingBacktickRun: backtickCloser(text), terminators: new Map(), text }
+  return { codeSpanCloser: backtickCloser(text), terminators: new Map(), text }
 }
 
 export function readInlineToken(inline: InlineSource, index: number, claims: Claims): InlineToken {
@@ -86,7 +86,7 @@ function angleToken(inline: InlineSource, index: number): InlineToken {
 
 function backtickToken(inline: InlineSource, index: number): InlineToken {
   const opener = backtickRun(inline.text, index)
-  const closer = inline.closingBacktickRun(index + opener, opener)
+  const closer = inline.codeSpanCloser(index + opener, opener)
   return closer === undefined ? text(opener) : { kind: 'code-span', opener, width: closer + opener - index }
 }