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--- a/src/common/cstr.h
+++ b/src/common/cstr.h
@@ -48,6 +48,7 @@
 DEF_CSTR(fileu, "file://");
 DEF_CSTR(fmtime, "fmtime");
 DEF_CSTR(iso_8859_1, "ISO-8859-1");
+DEF_CSTR(utf8, "UTF-8");
 DEF_CSTR(minwilds, "*?[");
 DEF_CSTR(newline, "\n");
 DEF_CSTR(null, "");