[tlbuild] linked scripts when script names only differ by their extensions

[Norbert Preining]

> "grep -E" should solve this issue.

All for doing that. Arch/Debian/... all are complaining about using
grep -E explicitly...

Norbert

--
PREINING Norbert                              https://www.preining.info
arXiv / Cornell University   +   IFMGA Guide   +   TU Wien  +  TeX Live
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