Answer the architecture pass: the seam attribute reading names, and the speller a third file copied

src/markdown/emit/inline-line.ts

@@ -12,6 +12,7 @@ import { markSpelling, spellMarkAttributes } from '../mark-spellings.ts'
 import { sameMark } from '../../adf/editor-normal.ts'
 import { spellDestination, spellTitle } from '../link-syntax.ts'
 import { spellInlineNodeAttributes } from './inline-directive-spelling.ts'
+import { spellLeafDirective } from '../directive-syntax.ts'
 import { spellTextDirective } from '../text-directive.ts'
 
 type EmittedLine = { line: string; segments: InlineSegment[] }
@@ -121,10 +122,6 @@ function carriedText(text: string): InlineSegment {
   return syntax(spellTextDirective(text))
 }
 
-function spellLeafDirective(name: string, attributes: string): string {
-  return `:${name}${attributes === '' ? '{}' : attributes}`
-}
-
 function syntax(text: string): InlineSegment {
   return { escaping: 'none', text }
 }