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small bug in shared.ss

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svn: r4772
This commit is contained in:
John Clements 2006-11-03 23:17:49 +00:00
parent eea7a2376c
commit 4cfa7addc3
1 changed files with 2 additions and 1 deletions
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3
collects/stepper/private/shared.ss
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@ -563,7 +563,8 @@
;; expressions
(define (transfer-info to-exp from-exp)
(let* ([attached (syntax-property to-exp 'stepper-properties (append (syntax-property from-exp 'stepper-properties)
(let* ([attached (syntax-property to-exp 'stepper-properties (append (or (syntax-property from-exp 'stepper-properties)
null)
(or (syntax-property to-exp 'stepper-properties)
null)))]
[attached (syntax-property attached 'user-source (syntax-property from-exp 'user-source))]