vim-patch:8.1.1011: indent from autoindent not removed #9742

Problem:    Indent from autoindent not removed from blank line. (Daniel Hahler)
Solution:   Do not reset did_ai when text follows. (closes vim/vim#4119)
2ba4238818

src/nvim/misc1.c

@@ -710,9 +710,6 @@ open_line (
         less_cols_off++;
       }
     }
-    if (*p_extra != NUL) {
-      did_ai = false;               // append some text, don't truncate now
-    }
 
     /* columns for marks adjusted for removed columns */
     less_cols = (int)(p_extra - saved_line);