Steps to reproduce

• Log in as admin
• Go to Site administration > Development > Acceptance testing
• Set the "Contains" field to "I should see"

Expected behaviour: All Behat steps that contain the "I should see" as a substring should be listed

Actual behaviour: "There aren't any step definitions matching this filter" is shown

Reasons

The admin/tool/behat/index.php uses PARAM_ALPHANUMEXT as a type for this field, effectively disallowing anything but single simple words to be searched for, which significantly decreases the usefulness of this page. The official documentation http://behat.org/en/latest/user_guide/command_line_tool/informative_output.html does not explicitly mention it, but it seems to support multiple words phrase quite well:

$ vendor/bin/behat --config=/path/to/behat.yml -d 'I should see'

From what I can see, it does not perform an exact match - it returns also 'I should not see' steps. But I am finding that actually useful behaviour.

Other notes

While looking at this page, I can see some further space for improvements:

• The results displayed in 50% narrow column for no good reason
• The "Info" section occupying a lot of valuable screen space with a static information not relevant for returning experienced developers
• Overall styling improvements would be nice.