Hello, @vito-korleone,
I’m really disconcerted !! Unless I misunderstood your post, it’s quite an elementary task to achieve :-))
Open the Replace dialog ( Ctrl + H )
Type in a single space character in the Find what: zone
Leave the Replace with: zone EMPTY
Tick the Wrap around option and the Normal search mode
UN-tick all the other options
Click on the Replace All button
Remark :
If you must delete the space characters, in a specific zone of your file, only :
Do a normal selection of that zone
Open the Replace dialog ( Ctrl + H )
Type in a single space character in the Find what: zone
Leave the Replace with: zone EMPTY
Tick the In selection option and the Normal search mode
UN-tick all the other options
Click on the Replace All button
Best Regards,
guy038