# \#r6rs

**URL:** https://racket.discourse.group/tag/r6rs/209.md

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## [Update of library Scheme+ for Racket-R6RS with and checked by a full graphic example](https://racket.discourse.group/t/update-of-library-scheme-for-racket-r6rs-with-and-checked-by-a-full-graphic-example/3146)

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**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\
**Replies:** 0\
**Last updated:** [September 2, 2024, 9:43am UTC](https://racket.discourse.group/t/update-of-library-scheme-for-racket-r6rs-with-and-checked-by-a-full-graphic-example/3146 "2024-09-02T09:43:16Z")

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Hello, As written in the title, i published an update because there was a bug preventing to use square bracket indexing that was found when coding a full graphical example that used indexing of arrays with \[ \]. Rega…

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## [Error 'cond: unbound identifier; also, no #%app syntax transformer is bound'](https://racket.discourse.group/t/error-cond-unbound-identifier-also-no-app-syntax-transformer-is-bound/3081)

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**Author:** [@damien\_mattei](https://racket.discourse.group/u/damien_mattei)\
**Replies:** 12\
**Last updated:** [August 15, 2024, 10:09am UTC](https://racket.discourse.group/t/error-cond-unbound-identifier-also-no-app-syntax-transformer-is-bound/3081 "2024-08-15T10:09:55Z")

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Hello, i have an error i can not resolve in racket/r6rs. The almost same code works in Guile (pure Guile) and Kawa (approx. r7rs) . I think it should works in Racket but i have re-written a lot of code in R6RS and i wi…