patch 8.1.0282: 'incsearch' does not work with command modifiers

Problem:    'incsearch' does not work with command modifiers.
Solution:   Skip command modifiers.
diff --git a/src/ex_getln.c b/src/ex_getln.c
index fb16743..a8c5cfb 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -283,11 +283,24 @@
 	    return TRUE;
 	if (firstc == ':')
 	{
-	    char_u *cmd = skip_range(ccline.cmdbuff, NULL);
-	    char_u *p;
-	    int	    delim;
-	    char_u *end;
+	    char_u	*cmd;
+	    cmdmod_T	save_cmdmod = cmdmod;
+	    char_u	*p;
+	    int		delim;
+	    char_u	*end;
+	    char_u	*dummy;
+	    exarg_T	ea;
 
+	    vim_memset(&ea, 0, sizeof(ea));
+	    ea.line1 = 1;
+	    ea.line2 = 1;
+	    ea.cmd = ccline.cmdbuff;
+	    ea.addr_type = ADDR_LINES;
+
+	    parse_command_modifiers(&ea, &dummy, TRUE);
+	    cmdmod = save_cmdmod;
+
+	    cmd = skip_range(ea.cmd, NULL);
 	    if (*cmd == 's' || *cmd == 'g' || *cmd == 'v')
 	    {
 		// Skip over "substitute" to find the pattern separator.
@@ -310,8 +323,6 @@
 		    end = skip_regexp(p, delim, p_magic, NULL);
 		    if (end > p || *end == delim)
 		    {
-			char_u  *dummy;
-			exarg_T ea;
 			pos_T	save_cursor = curwin->w_cursor;
 
 			// found a non-empty pattern
@@ -319,11 +330,6 @@
 			*patlen = (int)(end - p);
 
 			// parse the address range
-			vim_memset(&ea, 0, sizeof(ea));
-			ea.line1 = 1;
-			ea.line2 = 1;
-			ea.cmd = ccline.cmdbuff;
-			ea.addr_type = ADDR_LINES;
 			curwin->w_cursor = is_state->search_start;
 			parse_cmd_address(&ea, &dummy);
 			if (ea.addr_count > 0)