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| author | Rose Hogenson <rhogenson@posteo.net> | 2022-08-04 21:51:19 -0700 |
|---|---|---|
| committer | Rose Hogenson <rhogenson@posteo.net> | 2022-08-04 21:51:19 -0700 |
| commit | 09a63498f4de78d0c6e484d406544d8e7653b8ca (patch) | |
| tree | 92c3bd53ee351692196fbfdb5b4e050c340f76f3 | |
| parent | de9353e9c24c448aaa11e24f2ccfb1820acb3d34 (diff) | |
| download | chromatopelma-09a63498f4de78d0c6e484d406544d8e7653b8ca.tar.zst | |
Add begin.
| -rw-r--r-- | lib/scheme/base/20-let.csc | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/scheme/base/20-let.csc b/lib/scheme/base/20-let.csc index 4a02dfa..2b54d28 100644 --- a/lib/scheme/base/20-let.csc +++ b/lib/scheme/base/20-let.csc @@ -6,6 +6,7 @@ letrec letrec*) (import (only (csc builtins) + builtin-sequence define-syntax lambda)) (begin @@ -74,4 +75,14 @@ body1 body2 ...) (let ((name1 val1)) (let* ((name2 val2) ...) - body1 body2 ...)))))) + body1 body2 ...))))) + + + (define-syntax begin + (syntax-rules () + ((begin) + #f) + ((begin expr) + expr) + ((begin body1 body2 ...) + (builtin-sequence body1 (begin body2 ...)))))) |