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Matthew Flatt 10d9de8b62 port position-tracking clean-ups Add `file-position*', which can return #f instead of raising an exception when a port's position is unknown. Change `make-input-port' and `make-output-port' to accept more kinds of values as the initial position. These changes make it possible to synchronize a port's position with a `port-commit-peeked' action. It's ugly, which I think reflect something broken about position tracking in the port protocol (which seems difficult to fix without breaking compaibility). original commit: b61f3f751c5dfe72869fd449ba3ff42f520d0927	2012-08-28 16:04:41 -06:00
collects	port position-tracking clean-ups	2012-08-28 16:04:41 -06:00
doc/release-notes/typed-racket	Update TR history.	2012-07-24 13:48:05 -04:00

Matthew Flatt 10d9de8b62 port position-tracking clean-ups

Add `file-position*', which can return #f instead of raising
an exception when a port's position is unknown. Change
`make-input-port' and `make-output-port' to accept more
kinds of values as the initial position.

These changes make it possible to synchronize a port's
position with a `port-commit-peeked' action. It's ugly,
which I think reflect something broken about position
tracking in the port protocol (which seems difficult to fix
without breaking compaibility).

original commit: b61f3f751c5dfe72869fd449ba3ff42f520d0927

2012-08-28 16:04:41 -06:00

collects

port position-tracking clean-ups

2012-08-28 16:04:41 -06:00

doc/release-notes/typed-racket

Update TR history.

2012-07-24 13:48:05 -04:00