regex - `Nothing` in macro crashes Excel 2013 -


i'm trying use regex in excel 2015 macro. don't know if i'm doing wrong, every time run it, excel crashes. here's macro:

sub makeexplicit()      dim whitespace regexp     set whitespace = new regexp     whitespace.pattern = "\s+"     whitespace.multiline = true     whitespace.global = true      dim implicit regexp     set implicit = new regexp     implicit.pattern = "^\d+-\d+$"      dim row range      each row in activesheet.usedrange.rows          dim first range         set first = row.cells(1, 1)          dim str string         str = first.text         str = whitespace.replace(str, nothing)          if implicit.test(str) 'fixme here crashes              dim fromto variant             fromto = split(str, "-")              dim sfrom, sto integer             sfrom = fromto(1)             sto = fromto(2)              ' doplň chybějící číslice             ' např [2345, 78] doplní             ' na [2345, 2378]             sto = left( _                 sfrom, _                 len(sfrom) - len(sto) _             ) + sto              dim ifrom, ito integer             ifrom = cint(sfrom)             ito = cint(sto)              if ifrom > ito _                 err.raise 42, first.address, _                 "wrong order of numbers!"               dim integer             = ifrom ito                 ' more code             next          end if      next row  end sub

by using debugger found out crashes when code reaches "if implicit.test(str) then" implying there's wrong regex. these project's references:

microsoft vbscript regular expressions 5.5 included

the obvious question how work? vba ugly language itself, have no preference how, making work enough.

a few things...

1) line if implicit.test(str) then should not cause error.

2) replace 1 or more spaces no spaces, use "" instead of nothing...

str = whitespace.replace(str, "")

3) since split function returns 0-based array, use...

sfrom = fromto(0) sto = fromto(1)

4) concatenate, use ampersand (&) instead of plus sign (+)...

    sto = left( _         sfrom, _         len(sfrom) - len(sto) _     ) & sto

hope helps!


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