[1.20.1, wishlist] .fchar's for U+2160 through U+217F

[Ivan Shmakov]

        Somehow, pdfroff(1) fails to render the Unicode Roman numerals
        for me, and it doesn't render U+2206, either.  May I suggest
        something along the lines of the following for the inclusion to
        GNU Troff?

        TIA.

        (Disclaimer: I'm not familiar with *roff.)

." fall back to GREEK CAPITAL LETTER DELTA for INCREMENT
.fchar \[u2206] \[u0394]

." NB: as per http://unicode.org/Public/UNIDATA/NamesList.txt
."
." #!/usr/bin/perl
." ## Ivan Shmakov, 2012.
." ## This code is in the public-domain.
." my $u;
." while (<>) {
."   $u = oct ("0x" . $1)
."       if (/^([[:xdigit:]]{4})/);
."   next unless (defined ($u) && $u >= 0x2160 && $u <= 0x217F);
."   if (/^\s+#\s+([[:xdigit:][:blank:]]+)(\s.*)?$/) {
."     ## NB: may make sense to map to \[uXXXX]'s instead
."     printf (".fchar \\[u%04x] %s\n", $u,
."             pack ("U*", map { oct ("0x" . $_); } split (/ /, $1)));
."     $u = undef;
."   }
." }
."
.fchar \[u2160] I
.fchar \[u2161] II
.fchar \[u2162] III
.fchar \[u2163] IV
.fchar \[u2164] V
.fchar \[u2165] VI
.fchar \[u2166] VII
.fchar \[u2167] VIII
.fchar \[u2168] IX
.fchar \[u2169] X
.fchar \[u216a] XI
.fchar \[u216b] XII
.fchar \[u216c] L
.fchar \[u216d] C
.fchar \[u216e] D
.fchar \[u216f] M
.fchar \[u2170] i
.fchar \[u2171] ii
.fchar \[u2172] iii
.fchar \[u2173] iv
.fchar \[u2174] v
.fchar \[u2175] vi
.fchar \[u2176] vii
.fchar \[u2177] viii
.fchar \[u2178] ix
.fchar \[u2179] x
.fchar \[u217a] xi
.fchar \[u217b] xii
.fchar \[u217c] l
.fchar \[u217d] c
.fchar \[u217e] d
.fchar \[u217f] m

-- 
FSF associate member #7257