Summary

r7rs "write" procedure does not escape "invalid" symbols

Metadata

• Id: eb7756a2039cacdd0f73b0a81b22d42aa2db993f
• Trac id: 1720
• Type: defect
• Reporter: pclouds
• Owner:
• Cc:
• Status: closed
• Component: unknown
• Estimated difficulty:
• Resolution: fixed
• Priority: major
• Milestone: 6.0.0
• Version: 5.2.0
• Changetime: 2023-11-08 14:23:11 UTC
• Created: 2020-08-30 12:04:34 UTC
• Keywords:

Description

r7rs defines an alternative way to present a symbol that's otherwise invalid identifiers, by putting it inside `||`. This is implementation-specific in r5rs.

The problem can be seen with `(write (features))` where 64bit is not escaped (i.e. |64bit|) while it is for all the r7rs schemes I have my hands on.

This is not a problem when within chicken because both the reader and writer are in sync. I found this out because I updated chibi-snow to read `(features)` from chicken. Chibi does not like '64bit' symbol without ecaping.

Changes and comments

[2023-11-06 23:29:43 UTC] felix changed milestone from someday to 6.0.0

[2023-11-08 14:23:11 UTC] felix changed status from new to closed

[2023-11-08 14:23:11 UTC] felix set resolution to fixed

[2023-11-08 14:23:11 UTC] felix wrote:

Will be fixed in forthcoming CHICKEN 6