How to stop kwrite from removing white spaces?

[alreve]

Kwrite removes white spaces at the end of a line. This is very annoying for me because they are a marker I use in a script.
Any line ending with ', ' (a comma and then a white space) needs something added to it.

They stay until I save the file (.txt or .csv format). Then the comma stays but the white space vanishes.
I've found a bug report : https://www.mail-archive.com/kde-bug...msg275137.html
But they say it can be fixed in the settings, so it's been moved to "feature requests".

In my version - kwrite 21.12.3 - I have no such option in the settings.

Current workaround :
- find and replace all white spaces by   before saving
- find and replace all   by white spaces before editing the file
- back it up very often in case I forget to make the change before saving

I can't just find and replace all commas by "comma + white space" then remove double white spaces because on some lines I have only the comma at the end.
Only the comma has a different meaning for my script (it means adding something has to be done but is not urgent).

All suggestions welcome

[currentshaft]

Use a different character for a marker other than a space? That seems like the easiest and most elegant solution. I mean, why a space? That is perhaps the worst possible character to use for delimination in Linux since it's used for IFS.