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.
R6RS adds _ as a wild-card pattern, breaking
some existing R5RS macros. Do we keep the _,
and if so what is the behavior of using _ and
... in the literals list?
The WG voted to accept this feature.