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I tried to replace m3 ha−1 into m3 ha−1 with no success. What is wrong with my expression?

(?i)(?<=\<m)3(?= ha\>)-1

1 Answer 1

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The superscript dash is different than the one you use in the Grep:

m3 ha−1: has a long dash

(?i)(?<=\)-1: has a short dash

Is it not enough this way?

(?<=ha)-1|(?<=m)3 enter image description here

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