Acme uses default font of lucidasans/euro.8.font, and it has no ハンカク数字、全角数字etc, which make me trouble to show Japanese mails from other systems. So, please add the line to the bottom of /font/lib/bit/lucidasans/euro.8.font as bellow:
..... ..... 0x9a01 0x9bf5 ../shinonome/k14.9a01 0x9c04 0x9dfd ../shinonome/k14.9c04 0x9e1a 0x9fa0 ../shinonome/k14.9e1a 0xff01 0xffe5 ../shinonome/k14.ff01 <---- this line 0xFFFD 0xFFFD 0x80 lsr.14 Kenji
