Follow-up wave to #72170 resolving the remaining open MEDIA-delivery gaps:
- #24032: add .kmz/.kml/.geojson/.gpx to MEDIA_DELIVERY_EXTS, and recover
unknown-extension paths containing spaces via _match_extensionless_path —
validation-gated forward extension across single spaces (bounded at 8
tokens, stops at newline / next MEDIA: keyword). The regex itself stays
non-greedy and whitespace-bounded so the #68773 absorption bug class
cannot return; the on-disk file check is the oracle.
- #16434 (streaming half): _strip_media_tag_directives now uses the same
mask-as-locator pattern as extract_media, so MEDIA tags inside fenced
code blocks, inline-code examples, and JSON string values survive in
streamed display text instead of being mangled. Display and delivery
now agree on every protected-span rule.
- Updated three stream_consumer display expectations that pinned the old
inconsistent behavior (backtick/double-quote tags stripped from display
while delivery never attempted them).
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