I went with that recommendation: 
-    like($@, qr/Cannot find directory\(ies\): $bad_gitdir/,
+    like($@, qr/\QCannot find directory(ies): $bad_gitdir\E/,

[download]
Although in a couple of places I had to use the \Q ... \E syntax twice within one pattern: 
-    like($@, qr/Cannot find file\(s\) to be tested:.*$bad_target_args
+->[1]/,
+    like($@, qr/\QCannot find file(s) to be tested:\E.*\Q$bad_target_
+args->[1]\E/,

[download]
Thanks to all who responded. The revised code is available at Devel-Git-MultiBisect-0.07.tar.gz and should be available on CPAN within the hour. If anyone on Windows could give that a smoke test, that would be great.

Thank you very much.

Jim Keenan

In reply to Re^3: Unterminated \g... pattern in regex behaving badly on Windows by jkeenan1
in thread Unterminated \g... pattern in regex behaving badly on Windows by jkeenan1

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