Bug 1618034 - Strip private subtags in nsLanguageAtomService::GetUncachedLanguageGroup so that we can parse the standard subtags and use the proper font prefs. r=zbraniecki

Differential Revision: https://phabricator.services.mozilla.com/D72050

UltraBlame original commit: 961700e5d48a292ca8d15f974729946227374359

Author: marco-c

intl/locale/nsLanguageAtomService.cpp

@@ -1271,6 +1271,124 @@ its
 likely
 )
 script
+.
+/
+/
+https
+:
+/
+/
+bugzilla
+.
+mozilla
+.
+org
+/
+show_bug
+.
+cgi
+?
+id
+=
+1618034
+:
+/
+/
+First
+strip
+any
+private
+subtags
+that
+would
+cause
+Locale
+to
+reject
+the
+/
+/
+tag
+as
+non
+-
+wellformed
+.
+nsACString
+:
+:
+const_iterator
+start
+end
+;
+langStr
+.
+BeginReading
+(
+start
+)
+;
+langStr
+.
+EndReading
+(
+end
+)
+;
+if
+(
+FindInReadable
+(
+NS_LITERAL_CSTRING
+(
+"
+-
+x
+-
+"
+)
+start
+end
+)
+)
+{
+/
+/
+The
+substring
+we
+want
+ends
+at
+the
+beginning
+of
+the
+"
+-
+x
+-
+"
+subtag
+.
+langStr
+.
+Truncate
+(
+start
+.
+get
+(
+)
+-
+langStr
+.
+BeginReading
+(
+)
+)
+;
+}
 Locale
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