TextFX can format empty spaces ?
the best thing is, if you test everything yourself, by downloading the portable notepad++ 7.6.4. 32 bit from here:
https://notepad-plus-plus.org/repository/7.x/7.6.4/npp.7.6.4.bin.zip
(the portable version will work completely isolated from your installed version and is perfect for any testing. any settings or plugin installation you do at the portable version, will not modify anything at your installed version. that’s why many of us use this version for testing)
extract npp.7.6.4.bin.zip to your desktop.
start it by double clicking on notepad++.exe inside the npp.7.6.4.bin folder.
use the built in plugins admin to download textfx, or any other available plugins you would like to try.
happy testing.