patch 9.0.0358: 'breakindent' does not indent non-lists

Problem:    'breakindent' does not indent non-lists with
            "breakindentopt=list:-1".
Solution:   Adjust indent computation. (Maxim Kim, closes #11038)

src/indent.c

@@ -998,7 +998,7 @@ get_breakindent_win(
 		    if (wp->w_briopt_list > 0)
 			prev_list = wp->w_briopt_list;
 		    else
-			prev_list = (*regmatch.endp - *regmatch.startp);
+			prev_indent = (*regmatch.endp - *regmatch.startp);
 		}
 		vim_regfree(regmatch.regprog);
 	    }
@@ -1017,13 +1017,8 @@ get_breakindent_win(
     bri += win_col_off2(wp);
 
     // add additional indent for numbered lists
-    if (wp->w_briopt_list != 0)
-    {
     if (wp->w_briopt_list > 0)
 	bri += prev_list;
-	else
-	    bri = prev_list;
-    }
 
     // indent minus the length of the showbreak string
     if (wp->w_briopt_sbr)

src/testdir/test_breakindent.vim

@@ -818,6 +818,22 @@ func Test_breakindent20_list()
 
   " check formatlistpat indent with different list level
   " showbreak and sbr
+  setl briopt=min:5,sbr,list:-1
+  setl showbreak=>
+  redraw!
+  let expect = [
+	\ "* Congress shall    ",
+	\ "> make no law       ",
+	\ "*** Congress shall  ",
+	\ ">   make no law     ",
+	\ "**** Congress shall ",
+	\ ">    make no law    ",
+	\ ]
+  let lines = s:screen_lines2(1, 6, 20)
+  call s:compare_lines(expect, lines)
+
+  " check formatlistpat indent with different list level
+  " showbreak sbr and shift
   setl briopt=min:5,sbr,list:-1,shift:2
   setl showbreak=>
   redraw!
@@ -831,6 +847,28 @@ func Test_breakindent20_list()
 	\ ]
   let lines = s:screen_lines2(1, 6, 20)
   call s:compare_lines(expect, lines)
+
+  " check breakindent works if breakindentopt=list:-1
+  " for a non list content
+  %delete _
+  call setline(1, ['  Congress shall make no law',
+        \ '    Congress shall make no law',
+        \ '     Congress shall make no law'])
+  norm! 1gg
+  setl briopt=min:5,list:-1
+  setl showbreak=
+  redraw!
+  let expect = [
+	\ "  Congress shall    ",
+	\ "  make no law       ",
+	\ "    Congress shall  ",
+	\ "    make no law     ",
+	\ "     Congress shall ",
+	\ "     make no law    ",
+	\ ]
+  let lines = s:screen_lines2(1, 6, 20)
+  call s:compare_lines(expect, lines)
+
   call s:close_windows('set breakindent& briopt& linebreak& list& listchars& showbreak&')
 endfunc
 

src/version.c

@@ -707,6 +707,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    358,
 /**/
     357,
 /**/