Fixes the handling of the initial input lines of a test script by simply
skipping all initial empty lines.
Helped-by: Florian Walch <florian@fwalch.com>
Suggested-by: Florian Walch <florian@fwalch.com>
Add check to see if a string contains ], which can result in
cases where wrapping a string in [[...]] breaks. Use [=[...]=] instead
on those strings.
Use [=[...]=] for insert() and expect().
* Remove 'test' prefix from test names.
* Ask if existing spec files should be overwritten.
* Fix for legacy tests with no initial buffer content (e.g. test_signs).
