(last)indexOfAny(index)

whitespace

some code reductions

faster

some last fixes, I hope

typo

walkLength
isValidFilename() to range
Merge pull request #2173 from WalterBright/isvalidfilename-range

isValidFilename() to range
Merge pull request #1952 from burner/last_indexOfAny_index

(last)indexOfAny(index)