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ntdll: Avoid setting IS_TEXT_UNICODE_NUL_BYTES for the last byte of an ANSI string.
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@ -1610,6 +1610,9 @@ BOOLEAN WINAPI RtlIsTextUnicode( LPCVOID buf, INT len, INT *pf )
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/* Check for an odd length ... pass if even. */
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if (len & 1) out_flags |= IS_TEXT_UNICODE_ODD_LENGTH;
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if (((char *)buf)[len - 1] == 0)
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len--; /* Windows seems to do something like that to avoid e.g. false IS_TEXT_UNICODE_NULL_BYTES */
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len /= sizeof(WCHAR);
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/* Windows only checks the first 256 characters */
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if (len > 256) len = 256;
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@ -1677,7 +1677,7 @@ static void test_RtlIsTextUnicode(void)
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int flags;
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int i;
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todo_wine ok(!pRtlIsTextUnicode(ascii, sizeof(ascii), NULL), "ASCII text detected as Unicode\n");
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ok(!pRtlIsTextUnicode(ascii, sizeof(ascii), NULL), "ASCII text detected as Unicode\n");
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ok(pRtlIsTextUnicode(unicode, sizeof(unicode), NULL), "Text should be Unicode\n");
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ok(!pRtlIsTextUnicode(unicode, sizeof(unicode) - 1, NULL), "Text should be Unicode\n");
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