convert forbidden character in filename(Windows) with underline
convert forbidden character in filename(Windows) with underline
Merge pull request #1553 from zoghal/cache-fileengin

convert forbidden character in filename(on Windows) with underline
Minor simplification.
Merge branch 'master' into 2.4
Fix failing test.

Quote encoding in confirm handlers has changed in 2.4. Update the
relevant test.
Merge branch '2.4' into 2.5