P2419R2 Clarify handling of encodings in localized formatting of chrono types

Author: jensmaurer

source/support.tex

@@ -617,7 +617,7 @@
 #define @\defnlibxname{cpp_lib_execution}@                         201902L // also in \libheader{execution}
 #define @\defnlibxname{cpp_lib_expected}@                          202202L // also in \libheader{expected}
 #define @\defnlibxname{cpp_lib_filesystem}@                        201703L // also in \libheader{filesystem}
-#define @\defnlibxname{cpp_lib_format}@                            202110L // also in \libheader{format}
+#define @\defnlibxname{cpp_lib_format}@                            202207L // also in \libheader{format}
 #define @\defnlibxname{cpp_lib_gcd_lcm}@                           201606L // also in \libheader{numeric}
 #define @\defnlibxname{cpp_lib_generic_associative_lookup}@        201304L // also in \libheader{map}, \libheader{set}
 #define @\defnlibxname{cpp_lib_generic_unordered_lookup}@          201811L

source/time.tex

@@ -10509,6 +10509,11 @@
 the formats specified in ISO 8601:2004 shall be used where so described.
 Some of the conversion specifiers
 depend on the formatting locale.
+If the string literal encoding is a Unicode encoding form and
+the locale is among
+an \impldef{locales with Unicode support for chrono types} set of locales,
+each replacement that depends on the locale is performed as if
+the replacement character sequence is converted to the string literal encoding.
 If the formatted object does not contain the information
 the conversion specifier refers to,
 an exception of type \tcode{format_error} is thrown.