comfort collapses runs of spaces inside inline code
With format_markdown = true, comfort collapses consecutive spaces inside an inline code span to a single space:
Use `a b` here. becomes Use `a b` here.Unlike the delimiter padding in T-1f2jmb5, this changes the rendered output. Plain reflow (reflow_markdown) leaves the span untouched; the collapse happens in comrak's format_commonmark. Its format_code writes the span's literal through output(literal, true, ...), and when render.width > 0 (comfort sets usize::MAX) the line-wrapping path collapses consecutive spaces.
Re-parsing comrak's output alone cannot recover the original spacing because the extra spaces have already been stripped. A fix must either preserve each code span's literal from the input across the canonical pass (for example by pairing AST nodes or substituting sentinels as protect_reference_form_links does for reference links) or be fixed upstream in comrak.
Found while fixing T-1f2jmb5: a doc comment containing ` # ` lost its double space when cargo_format ran comfort over it.