This site is a static rendering of the Trac instance that was used by R7RS-WG1 for its work on R7RS-small (PDF), which was ratified in 2013. For more information, see Home.

Source for wiki KeywordSyntax version 4

author

cowan

comment

ipnr

72.14.228.137

name

KeywordSyntax

readonly

text

Keywords look like `:foo`, `foo:`, or `#:foo`, depending on the Scheme implementation:

 * Gauche (and Common Lisp) support `:foo`.

 * Gambit, Kawa (and DSSSL, SRFI 88) support `foo:`.

 * Bigloo, STklos supports both `foo:` and `:foo` and treats them as the same (in the sense of `eqv?`).

 * Scheme 7 supports both `foo:` and `:foo` and treats them as distinct (in the sense of `eqv?`).

 * PLT supports `#:foo`.

 * Chicken, Guile supports `#:foo` always, and also allows either `foo:` or `:foo` depending on the setting of a parameter or a startup option.

 * MIT, Scheme48/scsh, SISC, Chez, SCM, Ikarus, Larceny, Mosh, Scheme 9, SSCM, SXM, VSCM, Chibi don't support any of them.

If we adopt the :foo style, Gauche, Bigloo, Scheme 7, STklos will work out of the box, and Chicken and Guile will support it with an option.

If we adopt the foo: style, Gambit, Chicken, Kawa, STklos, Bigloo, Scheme 7 will work out of the box, and Guile will support it with an option.

If we adopt the #:foo style, PLT, Chicken, Bigloo, Guile, Scheme 7 will work out of the box.

time

2010-03-19 00:50:19