Regular expression for file chooser

[support]

Since 2.9, you can define a regular expression to filter files in filehooser through
<PARAM NAME="filechooserpattern" VALUE="regex=[^a-zA-Z0-9_\\.]"

[jmarcv]

.... to be released when?

[support]

Within 3 weeks. Do you want to try it before?
It was planned before but we delayed it to add new important features for S3 add-on (multipart + resume + server-side encryption)