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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
70 lines
1.6 KiB
Plaintext
70 lines
1.6 KiB
Plaintext
;; content-on-sx — relative block reorder.
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;;
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;; Move a top-level block to just before / after another block by id — more
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;; ergonomic than the index-based doc-move. No-op if either id is missing.
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;; Immutable; composes the doc.sx list helpers.
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;;
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;; Requires (loaded by harness): doc.sx.
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(define
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content/move-before
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(fn
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(doc id target)
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(let
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((blk (doc-find doc id)))
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(if
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(= blk nil)
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doc
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(let
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((without (ct-remove-id (doc-blocks doc) id)))
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(let
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((idx (ct-index-of without target)))
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(if
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(= idx -1)
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doc
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(doc-with-blocks doc (ct-insert-at without idx blk)))))))))
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(define
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content/move-after
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(fn
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(doc id target)
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(let
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((blk (doc-find doc id)))
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(if
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(= blk nil)
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doc
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(let
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((without (ct-remove-id (doc-blocks doc) id)))
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(let
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((idx (ct-index-of without target)))
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(if
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(= idx -1)
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doc
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(doc-with-blocks
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doc
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(ct-insert-at without (+ idx 1) blk)))))))))
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(define
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content/move-to-front
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(fn
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(doc id)
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(let
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((blk (doc-find doc id)))
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(if
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(= blk nil)
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doc
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(doc-with-blocks doc (cons blk (ct-remove-id (doc-blocks doc) id)))))))
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(define
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content/move-to-back
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(fn
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(doc id)
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(let
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((blk (doc-find doc id)))
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(if
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(= blk nil)
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doc
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(doc-with-blocks
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doc
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(append (ct-remove-id (doc-blocks doc) id) (list blk)))))))
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