Fix BCQL escape issues #514
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As a result of some refactoring, how escape characters worked in BCQL changed. It was also probably never completely correct.
Now it should work properly, i.e. single
\escaping should just work (although there may be additional edge cases, depending on the specifics of how Lucene's regex engine handles escaping).So these should all work properly:
"\""(find a double quote)"\\"(find a backslash)"\."(find a period)etc.