Description
As of c0e4910, the GTK build adds an extension to the returned value. This is done to match the behaviour of the other platforms. This affects the dialogs that return filenames.
The extension is derived from the first filter in the selected list. For example, if the user passes in png,jpg;pdf, then the three extensions that will be presented are:
png, jpgpdf*.*
If the user enters some_file with the first filter selected, then some_file.png is returned. If the user enters some_file with the second filter selected, then some_file.pdf is returned. With the third filter selected, some_file is returned.
It appears to not be possible to query which filter was selected when Zenity returns, so this functionality cannot be added to Native File Dialog. As a result, it always returns some_file. If anyone knows a way to get the selected filter from Zenity or a way to provide parity, please update this bug.