Spacemacs yellow line

Question

I am a novice when use Spacemacs. when edit c++ files. there are yellow highlight lines. so I want to disable the yellow highlight and what does the yellow hightlight means?

Answer 1

The yellow highlights are whitespace. If you do not want whitespace to show you can add (setq show-trailing-whitespace nil) to the dotspacemacs/user-config section in your .spacemacs (open with SPC f e d and reload with SPC f e R).

I prefer to keep the whitespace highlighting enabled and remove trailing whitespace automatically. This can be done by changing the variable dotspacemacs-whitespace-cleanup in dotspacemacs/init to 'all, 'trailing or 'changed.