Hi,
change of White space symbol color was also my second suggestion. Still it’s not looking perfect even when color is changed. Problem is also that it won’t use background color for these symbols. So maybe try any dark theme (Menu \ Settings -> Style Configurator… \ Select theme), it’s easier to distinguish this symbol that way (at least to me) if it’s really important.
Other option is to check it using Search or HEX-Editor plugin. Search will mark hits in result with background, so it’s easier to distinguish. You can change style of hits in:
Menu \ Settings -> Style Configurator… Language: Search result Style: Hit WordAnother thing that could help, would be add option to define custom character for this. But it could easy interfere with writing characters. Maybe define some different (optional) symbols to be able to easier distinguish this.
It all depends what exactly is your kind of work with Notepad++, so what would you like to achieve, and what can help you the most.
You can also suggest some change as feature request that could help you while working with Notepad++.
Best regards,
Tomas