_VersionCompare

[hunt]

$Version1 = "1.9.1"

$Version2 = "1.10"
MsgBox(0,"",_VersionCompare($Version1, $Version2)) ==
returns 1 but must -1

$Version1 = "1.9.b"

$Version2 = "1.10"
MsgBox(0,"",_VersionCompare($Version1, $Version2)) ==
returns 1 but must -1

$Version1 = "1.9b"

$Version2 = "1.10"
MsgBox(0,"",_VersionCompare($Version1, $Version2)) ==
returns 1 but must -1

[mvg]

Documented (well kinda) Function limitation. (No bug)

• All these compares are done in lexicographical mode.
• Ergo: 1.9xxx > 1.1xxx and/or 9xxx > 1xxx.

DOC
Remarks
This will try to use a numerical comparison but fall back on a lexicographical comparison.
See @extended for details about which type was performed.

[anonymous]

If UBound($aVersion1) <> UBound($aVersion2) Then will lexicographical comparison without numerical comparison but this is WRONG.

[mvg]

No. Nothing wrong with that.

• Its stated that it will try to do a numerical compare.

  This will try to use a numerical comparison but fall back on a lexicographical comparison.
  

If you like it to behave differently recode your local copy.
Or provide the function with (better matching) version strings that will be compared in numerical mode.

_{(case closed for me. Ergo: not commenting on it anymore. (try forum for additional feedback/talking on this))}