Start experimenting with generic functions for fixing problems

autoload/ale/fix/generic.vim

@@ -0,0 +1,12 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: Generic functions for fixing files with.
+
+function! ale#fix#generic#RemoveTrailingBlankLines(buffer, lines) abort
+    let l:end_index = len(a:lines) - 1
+
+    while l:end_index > 0 && empty(a:lines[l:end_index])
+        let l:end_index -= 1
+    endwhile
+
+    return a:lines[:l:end_index]
+endfunction