DrScheme Release Notes

Current Release: 44
Release Date: September 9, 1996.

Send bug reports to: plt-bugs@cs.rice.edu

The following is a summary of the changes in this release from the previous one.

DrScheme

• Non-text items (e.g. a picture) can be used in a program as a contant value. The interaction window handles non-text for both input and output. When non-text is used in a program saved to disk, the file is automatically saved to disk in DrScheme's binary format.
• Syntax checking has been improved, and the colors are now parameterized through preferences.
• These syntactic forms not yet supported: do without the step form and define-structure (use define-struct instead).

Analysis

• The Analysis tool (MrSpidey) is temporarily unavailable in release 44 and will reappear in a future release.

Known Problems

• DrScheme internally normalizes pathnames, resolving all links to absolute paths. This causes problems with systems that use automounting.
• Even in the R4RS language level, DrSchemd does not support case-insensitive identifiers.
• The eval procedure is not supported.