updated for version 7.3.1217

Problem:    New regexp engine: Can't handle \%[[ao]]. (Yukihiro Nakadaira)
Solution:   Support nested atoms inside \%[].

src/regexp_nfa.c

@@ -1150,13 +1150,16 @@ nfa_regatom()
 			int	    n;
 
 			/* \%[abc] */
-			for (n = 0; (c = getchr()) != ']'; ++n)
+			for (n = 0; (c = peekchr()) != ']'; ++n)
 			{
 			    if (c == NUL)
 				EMSG2_RET_FAIL(_(e_missing_sb),
 						      reg_magic == MAGIC_ALL);
-			    EMIT(c);
+			    /* recursive call! */
+			    if (nfa_regatom() == FAIL)
+				return FAIL;
 			}
+			getchr();  /* get the ] */
 			if (n == 0)
 			    EMSG2_RET_FAIL(_(e_empty_sb),
 						      reg_magic == MAGIC_ALL);

src/testdir/test64.in

@@ -366,6 +366,7 @@ STARTTEST
 :call add(tl, [2, '\%[bar]x', 'barxx', 'barx'])
 :call add(tl, [2, '\%[bar]x', 'bxx', 'bx'])
 :call add(tl, [2, '\%[bar]x', 'xxx', 'x'])
+:call add(tl, [2, 'b\%[[ao]r]', 'bar bor', 'bar'])
 :"
 :"""" Alternatives, must use first longest match
 :call add(tl, [2, 'goo\|go', 'google', 'goo'])

src/testdir/test64.ok

@@ -836,6 +836,9 @@ OK 2 - \%[bar]x
 OK 0 - \%[bar]x
 OK 1 - \%[bar]x
 OK 2 - \%[bar]x
+OK 0 - b\%[[ao]r]
+OK 1 - b\%[[ao]r]
+OK 2 - b\%[[ao]r]
 OK 0 - goo\|go
 OK 1 - goo\|go
 OK 2 - goo\|go

src/version.c

@@ -728,6 +728,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1217,
 /**/
     1216,
 /**/