usp10: Replace zero-width glyphs with 0x20 when psa->fNoGlyphIndex is set in ScriptShapeOpenType().

dlls/usp10/tests/usp10.c

@@ -1696,7 +1696,8 @@ static void test_ScriptShape(HDC hdc)
     for (i = 0; i < 2; i++)
     {
         static const WCHAR space[]  = {' ', 0};
-        static const WCHAR blanks[] = {'\t', '\r', '\n', 0x001c, 0x001d, 0x001e, 0x001f, 0x200e, 0x200f, /* LRM, RLM */
+        static const WCHAR blanks[] = {'\t', '\r', '\n', 0x001c, 0x001d, 0x001e, 0x001f,
+                                       0x200b, 0x200c, 0x200d, 0x200e, 0x200f,          /* ZWSP, ZWNJ, ZWJ, LRM, RLM */
                                        0x202a, 0x202b, 0x202c, 0x202d, 0x202e, 0};      /* LRE, RLE, PDF, LRO, RLO */
         HFONT font, oldfont = NULL;
         LOGFONTA lf;
@@ -1740,10 +1741,20 @@ static void test_ScriptShape(HDC hdc)
             ok(hr == S_OK, "%s: [%02x] expected S_OK, got %08x\n", lf.lfFaceName, blanks[j], hr);
             ok(nb == 1, "%s: [%02x] expected 1, got %d\n", lf.lfFaceName, blanks[j], nb);
 
-            ok(glyphs2[0] == blanks[j],
-               "%s: [%02x] got unexpected %04x.\n", lf.lfFaceName, blanks[j], glyphs2[0]);
-            ok(!attrs[0].fZeroWidth, "%s: [%02x] got unexpected fZeroWidth %#x.\n",
-               lf.lfFaceName, blanks[j], attrs[0].fZeroWidth);
+            if (blanks[j] == 0x200b || blanks[j] == 0x200c || blanks[j] == 0x200d)
+            {
+                ok(glyphs2[0] == 0x0020,
+                   "%s: [%02x] got unexpected %04x.\n", lf.lfFaceName, blanks[j], glyphs2[0]);
+                ok(attrs[0].fZeroWidth, "%s: [%02x] got unexpected fZeroWidth %#x.\n",
+                   lf.lfFaceName, blanks[j], attrs[0].fZeroWidth);
+            }
+            else
+            {
+                ok(glyphs2[0] == blanks[j],
+                   "%s: [%02x] got unexpected %04x.\n", lf.lfFaceName, blanks[j], glyphs2[0]);
+                ok(!attrs[0].fZeroWidth, "%s: [%02x] got unexpected fZeroWidth %#x.\n",
+                   lf.lfFaceName, blanks[j], attrs[0].fZeroWidth);
+            }
         }
         if (oldfont)
             DeleteObject(SelectObject(hdc, oldfont));

dlls/usp10/usp10.c

@@ -1266,6 +1266,7 @@ static HRESULT _ItemizeInternal(const WCHAR *pwcInChars, int cInChars,
 {
 
 #define Numeric_space 0x0020
+#define ZWSP 0x200B
 #define ZWNJ 0x200C
 #define ZWJ  0x200D
 
@@ -3176,8 +3177,19 @@ HRESULT WINAPI ScriptShapeOpenType( HDC hdc, SCRIPT_CACHE *psc,
             if (rtl) idx = cChars - 1 - i;
             pwOutGlyphs[i] = pwcChars[idx];
 
+            if (!psa)
+                continue;
+
             /* overwrite some basic control glyphs to blank */
-            if (psa && !psa->fNoGlyphIndex && psa->eScript == Script_Control)
+            if (psa->fNoGlyphIndex)
+            {
+                if (pwcChars[idx] == ZWSP || pwcChars[idx] == ZWNJ || pwcChars[idx] == ZWJ)
+                {
+                    pwOutGlyphs[i] = 0x20;
+                    pOutGlyphProps[i].sva.fZeroWidth = 1;
+                }
+            }
+            else if (psa->eScript == Script_Control)
             {
                 if (pwcChars[idx] == 0x0009 || pwcChars[idx] == 0x000A ||
                     pwcChars[idx] == 0x000D || pwcChars[idx] >= 0x001C)