Windows 10 (64 bit), Emacs 25.1
Suppose I has text:
111111111 aaaaaaaa bbbbbbbbbb
222222 3333333333 44444444
111111111 aaaaaaaa bbbbbbbbbb
111111111 aaaaaaaa bbbbbbbbbb
44444444 666666666 777777777777
111111111 aaaaaaaa bbbbbbbbbb
So I want to remove duplicate lines that contain aaaaaaaa.
Result must be this:
111111111 aaaaaaaa bbbbbbbbbb
222222 3333333333 44444444
44444444 666666666 777777777777
I want to use built-in capabilities of Emacs (without write custom elisp script).