vim-patch:8.0.0049

Problem:    When a match ends in part of concealed text highlighting, it might
            mess up concealing by resetting prev_syntax_id.
Solution:   Do not reset prev_syntax_id and add a test to verify. (Christian
            Brabandt, closes vim/vim#1092)

2f97912800

src/nvim/screen.c

@@ -2922,7 +2922,6 @@ win_line (
               }
             } else if (v == (long)shl->endcol) {
               shl->attr_cur = 0;
-              prev_syntax_id = 0;
 
               next_search_hl(wp, shl, lnum, (colnr_T)v,
                              shl == &search_hl ? NULL : cur);