digraphs: fix unicode translation for J< in rfc

Intended "LATIN CAPITAL LETTER J WITH CARON" is not in modern unicode
as a single glyph, but can be composed using combining mark.

diff --git a/tools/mkdigraphs-rfc b/tools/mkdigraphs-rfc
index 81df0a075f06a0e720a50afb650db7c2ac0d0026..8db192c728971be8a5186827321e2a35090741b3 100755 (executable)
--- a/tools/mkdigraphs-rfc
+++ b/tools/mkdigraphs-rfc
@@ -47,7 +47,7 @@ my %replace = (
        0xE025 => "\x{20D7}",  # also 20D1; non-spacing
        0xE026 => "\x{1FEF}",
        0xE027 => "\x{1FC0}",
-       0xE028 => "\x{01F0}", #but uppercase
+       0xE028 => "J̌",  # uppercase U+01F0, no single character
 );
 
 # expect input data source at command line