From 44f8cde9aa0d483b009f012de7f54c4c7f64f0a3 Mon Sep 17 00:00:00 2001
From: terencehill <piuntn@gmail.com>
Date: Tue, 10 Oct 2017 21:56:23 +0200
Subject: [PATCH] Invisible name check: detect all utf8 space characters

---
 qcsrc/lib/string.qh | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/qcsrc/lib/string.qh b/qcsrc/lib/string.qh
index b05a316c94..0a3fb085c1 100644
--- a/qcsrc/lib/string.qh
+++ b/qcsrc/lib/string.qh
@@ -256,6 +256,7 @@ int u8_strsize(string s)
 	return l;
 }
 
+//List of Unicode spaces: https://www.cs.tut.fi/~jkorpela/chars/spaces.html
 ERASEABLE
 bool isInvisibleString(string s)
 {
@@ -272,8 +273,26 @@ bool isInvisibleString(string s)
 			case 192:          // charmap space
 				if (!utf8) break;
 				return false;
-			case 160:          // space in unicode fonts
 			case 0xE000 + 192: // utf8 charmap space
+			case 0x00A0: // NO-BREAK SPACE
+			//case 0x1680: // OGHAM SPACE MARK
+			case 0x180E: // MONGOLIAN VOWEL SEPARATOR
+			case 0x2000: // EN QUAD
+			case 0x2001: // EM QUAD
+			case 0x2002: // EN SPACE
+			case 0x2003: // EM SPACE
+			case 0x2004: // THREE-PER-EM SPACE
+			case 0x2005: // FOUR-PER-EM SPACE
+			case 0x2006: // SIX-PER-EM SPACE
+			case 0x2007: // FIGURE SPACE
+			case 0x2008: // PUNCTUATION SPACE
+			case 0x2009: // THIN SPACE
+			case 0x200A: // HAIR SPACE
+			case 0x200B: // ZERO WIDTH SPACE
+			case 0x202F: // NARROW NO-BREAK SPACE
+			case 0x205F: // MEDIUM MATHEMATICAL SPACE
+			case 0x3000: // IDEOGRAPHIC SPACE
+			case 0xFEFF: // ZERO WIDTH NO-BREAK SPACE
 				if (utf8) break;
 			default:
 				return false;
-- 
2.39.2