patch 7.4.1793

Problem:    Some character classes may differ between systems.  On OS/X the
            regexp test fails.
Solution:   Make this less dependent on the system. (idea by Kazunobu Kuriyama)

Author: brammool

src/regexp.c

@@ -2542,12 +2542,12 @@ regatom(int *flagp)
 				}
 				break;
 			    case CLASS_ALNUM:
-				for (cu = 1; cu <= 255; cu++)
+				for (cu = 1; cu < 128; cu++)
 				    if (isalnum(cu))
 					regmbc(cu);
 				break;
 			    case CLASS_ALPHA:
-				for (cu = 1; cu <= 255; cu++)
+				for (cu = 1; cu < 128; cu++)
 				    if (isalpha(cu))
 					regmbc(cu);
 				break;
@@ -2572,7 +2572,8 @@ regatom(int *flagp)
 				break;
 			    case CLASS_LOWER:
 				for (cu = 1; cu <= 255; cu++)
-				    if (MB_ISLOWER(cu))
+				    if (MB_ISLOWER(cu) && cu != 170
+								 && cu != 186)
 					regmbc(cu);
 				break;
 			    case CLASS_PRINT:
@@ -2581,7 +2582,7 @@ regatom(int *flagp)
 					regmbc(cu);
 				break;
 			    case CLASS_PUNCT:
-				for (cu = 1; cu <= 255; cu++)
+				for (cu = 1; cu < 128; cu++)
 				    if (ispunct(cu))
 					regmbc(cu);
 				break;

src/regexp_nfa.c

@@ -4837,11 +4837,11 @@ check_char_class(int class, int c)
     switch (class)
     {
 	case NFA_CLASS_ALNUM:
-	    if (c >= 1 && c <= 255 && isalnum(c))
+	    if (c >= 1 && c < 128 && isalnum(c))
 		return OK;
 	    break;
 	case NFA_CLASS_ALPHA:
-	    if (c >= 1 && c <= 255 && isalpha(c))
+	    if (c >= 1 && c < 128 && isalpha(c))
 		return OK;
 	    break;
 	case NFA_CLASS_BLANK:
@@ -4861,15 +4861,15 @@ check_char_class(int class, int c)
 		return OK;
 	    break;
 	case NFA_CLASS_LOWER:
-	    if (MB_ISLOWER(c))
+	    if (MB_ISLOWER(c) && c != 170 && c != 186)
 		return OK;
 	    break;
 	case NFA_CLASS_PRINT:
 	    if (vim_isprintc(c))
 		return OK;
 	    break;
 	case NFA_CLASS_PUNCT:
-	    if (c >= 1 && c <= 255 && ispunct(c))
+	    if (c >= 1 && c < 128 && ispunct(c))
 		return OK;
 	    break;
 	case NFA_CLASS_SPACE:

src/version.c

@@ -753,6 +753,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1793,
 /**/
     1792,
 /**/