Uploading multiple image files

[swsch]

One of my IOWA apps has been running for over 12 years now, with only minor hiccups during the upgrade from ruby 1.8 to 2.6.

A recent feature request includes the capability to upload images, which I tried to implement via a <input type="file" name="upload" multiple ...> form field. However, the WEBrick request handler explicitly joins multiple form values for the same form field into a single string (src/iowa/request/WEBrick.rb, around line 25) using \0 as separator.

Not good for binary content.

I've managed to find an extremely ugly way around this, but I wonder if there is a smart way to get multiple files uploaded via a single input field.