Ruta: matching with manual anchor

text span:
"0.3-0.7"

rules:

DECLARE Number;
DECLARE NumberExpression;
NUM {-PARTOF(Number)} ((COMMA | PERIOD) NUM)? {->MARK(Number,1,2)};
((Number? ("<" | ">" | "=" | "==" | "-" | "+"))? {-PARTOF(NumberExpression)} @Number) {-PARTOF(NumberExpression)->MARK(NumberExpression)};

result:
-0.7 annotated as number expression
expected:
0.3 as number expression
[or 0.3-0.7 if manual anchoring tries to match at the end of the document first... depends on rule inference]

the rules should not be used for parsing of number expressions, but the behaviour should be consistent with the expectations for the rule inference