Use vim to search by hex code

Solution 1:

Search (e.g. using /) for \%x1b.

You can also type control characters, including escape, into the command line by preceding them with Ctrl-V. So type /, Ctrl-V, Esc, Enter.

Solution 2:

Transform vim into a hex editor by doing [escape] :%!xxd. Then search for 0x1B (/1B).

Solution 3:

You can discover what a hex value of a character by putting the cursor on it and pressing ga

Below you will see a hex value of the character. Example for a <╬> character

<╬> <|N> 206, Hex ce, Oct 316, Digr I>

Delete it by :

%s/\%xce//g