Fix weird behavior when pressing CR and Spaces follow

That's because Vim silently deletes the trailing whitespaces when
pressing enter

autoload/vimwiki/lst.vim

@@ -1221,14 +1221,8 @@ function! s:cr_on_empty_line(lnum, behavior) "{{{
   elseif a:behavior == 1 || a:behavior == 4
     normal! gi
 x
-  endif
+  endif
-endfunction "}}}
+endfunction "}}}
-
-function! s:cr_on_list_item(lnum, behavior, cur_col) "{{{
-  if a:behavior == 2 || a:behavior == 4 || (a:cur_col == 0 && getline(a:lnum) =~ '\s$')
-    " || (cur_item.lnum < s:get_last_line_of_item(cur_item))
-    normal! gi
-
 
 function! s:cr_on_list_item(lnum, insert_new_marker) "{{{
   if a:insert_new_marker
@@ -1236,6 +1230,12 @@ function! s:cr_on_list_item(lnum, behavior, cur_col) "{{{
     normal! gi
 
     call s:clone_marker_from_to(a:lnum, a:lnum+1)
+    "tiny sweet extra feature: indent next line if current line ends with :
+    if getline(a:lnum) =~ ':$'
+      call s:change_level(a:lnum+1, a:lnum+1, 'increase', 0)
+    endif
+  else
+    " || (cur_item.lnum < s:get_last_line_of_item(cur_item))
     "indent this line so that it becomes the continuation of the line above
     normal! gi
 
@@ -1254,14 +1254,22 @@ function! vimwiki#lst#kbd_cr(normal, just_mrkr) "{{{
     return
   endif
 
-  if has_bp == 1
+  if has_bp == 1
+    call s:cr_on_empty_list_item(lnum, a:just_mrkr)
+    return
+  endif
+
+  let insert_new_marker = (a:normal == 1 || a:normal == 3)
+  if getline('.')[col("'^")-1:] =~ '^\s\+$'
+    let cur_col = 0
+  else
     let cur_col = col("$") - col("'^")
     if insert_new_marker && cur_col == 0 && getline(lnum) =~ '\s$'
       let insert_new_marker = 0
     endif
   endif
 
-  if has_bp == 0
+  if has_bp == 0
     call s:cr_on_empty_line(lnum, a:normal)
   endif