Speeding up Unicode validation.

(The measurable effect (during long searches, for example) is zero, though.)


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@5773 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -5,6 +5,7 @@
 	an invalid escape sequence, and when entering a verbatim keystroke.
 	Leave the cursor off during Unicode input, for extra feedback.
 	* src/browser.c (do_browser): Improve the wording of a message.
+	* src/chars.c (is_valid_unicode): Speed up Unicode validation.
 
 2016-03-28  Benno Schulenberg  <bensberg@justemail.net>
 	* src/winio.c (statusbar): Don't bother putting back the cursor in

src/chars.c

@@ -955,9 +955,10 @@ bool has_blank_mbchars(const char *s)
 /* Return TRUE if wc is valid Unicode, and FALSE otherwise. */
 bool is_valid_unicode(wchar_t wc)
 {
-    return ((0 <= wc && wc <= 0x10FFFF) && (wc <= 0xD7FF || 0xE000 <=
-	wc) && (wc <= 0xFDCF || 0xFDF0 <= wc) && ((wc & 0xFFFF) <=
-	0xFFFD));
+    return ((0 <= wc && wc <= 0xD7FF) ||
+		 (0xE000 <= wc && wc <= 0xFDCF) ||
+		 (0xFDF0 <= wc && wc <= 0xFFFD) ||
+		 (0xFFFF < wc && wc <= 0x10FFFF && (wc & 0xFFFF) <= 0xFFFD));
 }
 #endif