Currently, when the default locale is Japanese, the search for a topic
using its URL, path or ID doesn’t work as expected. It will either
return wrong results or no result at all.
The problem lies with how we process the provided terms in Japanese
mode. For example, if `http://localhost/t/-/55` is provided, currently
this will result in `http localhost t 5 5` to be searched for.
This patch addresses the issue by checking whether the provided term
needs segmenting. If the provided term is a number, or a path or a full
URL, then it doesn’t need segmenting. When that happens we skip the
processing we normally apply for Japanese, making the search return the
expected results.
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