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(parent: bf8f051) | patch
In OPTIONAL-PORT, require only that if an argument was supplied it is
authorTaylor R. Campbell <net/mumble/campbell>
Sat, 13 Sep 2008 09:50:18 +0000 (09:50 +0000)
committerTaylor R. Campbell <net/mumble/campbell>
Sat, 13 Sep 2008 09:50:18 +0000 (09:50 +0000)
commit8ed37d4e7703b2dd428e55ae388e7a7f857e1fde
tree0e4afac19945d215fea356c56dc2425afc8c6ca3tree | snapshot
parentbf8f0510cd9b3af1299ef8871af5c0d5bb6c85cbcommit | diff
In OPTIONAL-PORT, require only that if an argument was supplied it is
a port.  Defer the guarantee that the port is an I/O port until it is
important: ports with PROMPT-FOR-{COMMAND-,}EXPRESSION operations need
not support input operations in order for the prompting procedures to
work.
v7/src/runtime/usrint.scm diff | blob | history
MIT/GNU Scheme, Pucked