[dokuwiki] Re: search improvements

Andreas Gohr wrote: 

I noticed the use of some strlen calls there. Are they
used in a UTF-8 safe way there or would it be possible that they split a
multibyte char? If that could happen we should add a check to strip
invalid UTF-8 chars from beginning and end of the snippet - this would
be a nice addition to the utf-8 lib.

Yes, I think that is the best solution, adjusting the strings to ensure they always start/end at utf-8 character boundaries. I'll see what I can come up with.

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