localedef: expand the default charmap

POSIX defines a number of other control characters as well as
alternative aliases for some that should be provided in the default set,
so let's go ahead and add those.

Reviewed by:	bapt, yuripv
Sponsored by:	Klara, Inc.
Differential Revision:	https://reviews.freebsd.org/D41692

usr.bin/localedef/charmap.c

@@ -70,13 +70,49 @@ static const struct {
 	int	ch;
 } portable_chars[] = {
 	{ "NUL",		'\0' },
+	{ "SOH",		'\x01' },
+	{ "STX",		'\x02' },
+	{ "ETX",		'\x03' },
+	{ "EOT",		'\x04' },
+	{ "ENQ",		'\x05' },
+	{ "ACK",		'\x06' },
+	{ "BEL",		'\a' },
 	{ "alert",		'\a' },
+	{ "BS",			'\b' },
 	{ "backspace",		'\b' },
+	{ "HT",			'\t' },
 	{ "tab",		'\t' },
-	{ "carriage-return",	'\r' },
+	{ "LF",			'\n' },
 	{ "newline",		'\n' },
+	{ "VT",			'\v' },
 	{ "vertical-tab",	'\v' },
+	{ "FF",			'\f' },
 	{ "form-feed",		'\f' },
+	{ "CR",			'\r' },
+	{ "carriage-return",	'\r' },
+	{ "SO",			'\x0e' },
+	{ "SI",			'\x0f' },
+	{ "DLE",		'\x10' },
+	{ "DC1",		'\x11' },
+	{ "DC2",		'\x12' },
+	{ "DC3",		'\x13' },
+	{ "DC4",		'\x14' },
+	{ "NAK",		'\x15' },
+	{ "SYN",		'\x16' },
+	{ "ETB",		'\x17' },
+	{ "CAN",		'\x18' },
+	{ "EM",			'\x19' },
+	{ "SUB",		'\x1a' },
+	{ "ESC",		'\x1b' },
+	{ "FS",			'\x1c' },
+	{ "IS4",		'\x1c' },
+	{ "GS",			'\x1d' },
+	{ "IS3",		'\x1d' },
+	{ "RS",			'\x1e' },
+	{ "IS2",		'\x1e' },
+	{ "US",			'\x1f' },
+	{ "IS1",		'\x1f' },
+	{ "DEL",		'\x7f' },
 	{ "space",		' ' },
 	{ "exclamation-mark",	'!' },
 	{ "quotation-mark",	'"' },