File changes.md artifact bacc1681de part of check-in bfbb3990ac
The source code for Tcl is managed by fossil. Tcl developers coordinate all changes to the Tcl source code at
Release Tcl 9.1a0 arises from the check-in with tag core-9-1-a0.
Highlighted differences between Tcl 9.1 and Tcl 9.0 are summarized below, with focus on changes important to programmers using the Tcl library and writing Tcl scripts.
Performance
- Memory efficient internal representations for list operations on large lists.
- Continued 64-bit capacity: Command line arguments larger than 2Gb