Checked with Luke on the string dash\-123\-01
and got
dash 123 01
with germanAnalyzer and standardAnalyzer and
dash
with all the other, except for whitespaceAnalyser, of course.
This makes me think that an escaped dash is never a minus, somehow.
No builtin Analyzer considers backslash an escape character - and most consider it a delimiter between tokens and throws it away as you've seen. Only QueryParser has the escape character feature.
Erik
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