This reverts commit 36367e4882.
36367e4882
Fish is always executed as ../test/root/bin/fish in these expect tests
Syntax highlighting for these coming in next commit. Fixes #154
Fixes #3649
Attempting to execute something like `exec "$test"` results in a fish internal token (a Unicode private use char) being printed in the resulting error message. That's obviously not desirable as well as confusing. Fixes #3187
