I have a section of code with 3 empty lines. Empty meaning no tabs and no spaces on them.
I have the following setting in the rules: Empty Lines -> Merge into one.
After I beautify the code, my 3 lines have merged into one, but I have tabs added to this empty line.
When I don't have the "Use tab character" set, then the merged line has redundant spaces.
Beautifier should remove all whitespace from empty (blank) lines and should not add such when merging empty lines.