k9mail/k-9 — pull request #121 by wilian-cb (2012-01-26 21:54:33+00:00)
Title: 3674: Illegal characters removed from file names when saving them on the device

It was created a method that only allows a certain range of characters to be used in file names when saving them on the device using the writeFile method.

Now, the set of characters allowed are:
- letters, numbers, spaces, sharp, dollar sign, percent sign, at , single quotation mark, parenthesis, hyphen, underline, curly brackets, tilde, dot, comma, ampersand and circum­flex.