From Newsgroup: comp.lang.tcl

Docs: https://github.com/apnadkarni/tcl9-migrate/blob/v1.0/README.md
Download: https://github.com/apnadkarni/tcl9-migrate/releases/tag/v1.0

This software is intended to help identify changes needed for migrating
Tcl 8 scripts to Tcl 9. It has two modes of operation:

- a static analyzer based on Nagelfar that runs under both Tcl 8.6 and 9 logging warnings for potential incompatibilities.

- a runtime analyzer. This is intended to only run under Tcl 9. It
attempts to fix up invalid code (e.g. encodings, tilde references) at
run time allowing the program to continue to run but logs warnings to
stderr.

These tools only target Tcl script level incompatibilities. In
particular, neither the C API nor Tk command incompatibilities are
addressed.
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