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charset=UTF-8 Attached patch is a workaround for the bug. It adds special handling of lambdas to `cl--sm-macroexpand', similar to the way it handles `let'. However, there is an unhandled case of "binding" symbols to forms. I'm also not sure what would be correct behavior in old non-lexical-scope code (do we still care?). So, this patch cannot really go in as-is, but it can serve as a base for a real fix. --94eb2c142220e0186f054b1a76f6 Content-Type: text/x-patch; charset=US-ASCII; name="0001-Fix-for-rebinding-in-lambdas-in-generator-functions.patch" Content-Disposition: attachment; filename="0001-Fix-for-rebinding-in-lambdas-in-generator-functions.patch" Content-Transfer-Encoding: base64 X-Attachment-Id: f_j0h2svda0 ZGlmZiAtLWdpdCBhL2xpc3AvZW1hY3MtbGlzcC9jbC1tYWNzLmVsIGIvbGlzcC9lbWFjcy1saXNw L2NsLW1hY3MuZWwKaW5kZXggNThiY2RkNTJhYy4uNTJkOTQ2YTBjMCAxMDA2NDQKLS0tIGEvbGlz cC9lbWFjcy1saXNwL2NsLW1hY3MuZWwKKysrIGIvbGlzcC9lbWFjcy1saXNwL2NsLW1hY3MuZWwK QEAgLTIwOTIsNiArMjA5MiwyMSBAQCBleGNlcHQgdGhhdCBpdCBhZGRpdGlvbmFsbHkgZXhwYW5k cyBzeW1ib2wgbWFjcm9zLiIKICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgKGNhciBl eHApKQogICAgICAgICAgICAgICAgICAgICAgICAgICAgICAsKG5yZXZlcnNlIG5icykKICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgLEBib2R5KSkpKSkKKyAgICAgICAgICAgIChgKGZ1bmN0 aW9uIChsYW1iZGEgLiAsKG9yIGAoLHBhcmFtcyAuICxib2R5KSBfZG9udGNhcmUpKSkKKyAgICAg ICAgICAgICAobGV0IChmb3VuZCBuYnMpCisgICAgICAgICAgICAgICAoZG9saXN0IChwYXJhbSBw YXJhbXMpCisgICAgICAgICAgICAgICAgIChsZXQqICgoc20gKGFzc3EgcGFyYW0gZW52KSkpCisg ICAgICAgICAgICAgICAgICAgKHB1c2ggKGlmIChub3QgKGNkciBzbSkpCisgICAgICAgICAgICAg ICAgICAgICAgICAgICAgIHBhcmFtCisgICAgICAgICAgICAgICAgICAgICAgICAgICAobGV0ICgo bmV4cCAoY2FkciBzbSkpKQorICAgICAgICAgICAgICAgICAgICAgICAgICAgICAoc2V0cSBmb3Vu ZCB0KQorICAgICAgICAgICAgICAgICAgICAgICAgICAgICAodW5sZXNzIChzeW1ib2xwIG5leHAp IChlcnJvciAiRklYTUUiKSkKKyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgbmV4cCkpCisg ICAgICAgICAgICAgICAgICAgICAgICAgbmJzKSkpCisgICAgICAgICAgICAgICAod2hlbiBmb3Vu ZAorICAgICAgICAgICAgICAgICAoc2V0cSBleHAgYChmdW5jdGlvbiAobGFtYmRhCisgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgLChucmV2ZXJzZSBuYnMpCisgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgLEBib2R5KSkpKSkpCiAgICAgICAgICAg ICA7OyBGSVhNRTogVGhlIGJlaGF2aW9yIG9mIENMIG1hZGUgc2Vuc2UgaW4gYSBkeW5hbWljYWxs eSBzY29wZWQKICAgICAgICAgICAgIDs7IGxhbmd1YWdlLCBidXQgZm9yIGxleGljYWwgc2NvcGlu ZywgQ29tbW9uLUxpc3AncyBiZWhhdmlvciBtaWdodAogICAgICAgICAgICAgOzsgbWFrZSBtb3Jl IHNlbnNlIChhbmQgaW5kZWVkLCBDTCBiZWhhdmVzIGxpa2UgQ29tbW9uLUxpc3Agdy5yLnQK --94eb2c142220e0186f054b1a76f6--