Apply ICU patches for ICU tickets 6175 (ISO-2022 and ...

third_party/icu38/source/common/ucnv_lmb.c

Index: third_party/icu38/source/common/ucnv_lmb.c
===================================================================
--- third_party/icu38/source/common/ucnv_lmb.c	(revision 10949)
+++ third_party/icu38/source/common/ucnv_lmb.c	(working copy)
@@ -1,6 +1,6 @@
 /*  
 **********************************************************************
-*   Copyright (C) 2000-2006, International Business Machines
+*   Copyright (C) 2000-2007, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 **********************************************************************
 *   file name:  ucnv_lmb.cpp
@@ -536,7 +536,7 @@
     NULL,\
     NULL,\
     _LMBCSSafeClone,\
-    _LMBCSGetUnicodeSet\
+    ucnv_getCompleteUnicodeSet\
 };\
 static const UConverterStaticData _LMBCSStaticData##n={\
   sizeof(UConverterStaticData),\
@@ -662,15 +662,14 @@
     return &newLMBCS->cnv;
 }
 
-static void
-_LMBCSGetUnicodeSet(const UConverter *cnv,
-                   const USetAdder *sa,
-                   UConverterUnicodeSet which,
-                   UErrorCode *pErrorCode) {
-    /* all but U+F6xx, see LMBCS explanation above (search for F6xx) */
-    sa->addRange(sa->set, 0, 0xf5ff);
-    sa->addRange(sa->set, 0xf700, 0x10ffff);
-}
+/*
+ * There used to be a _LMBCSGetUnicodeSet() function here (up to svn revision 20117)
+ * which added all code points except for U+F6xx
+ * because those cannot be represented in the Unicode group.
+ * However, it turns out that windows-950 has roundtrips for all of U+F6xx
+ * which means that LMBCS can convert all Unicode code points after all.
+ * We now simply use ucnv_getCompleteUnicodeSet().
+ */
 
 /* 
    Here's the basic helper function that we use when converting from