Additional support for Japanese pLaTeX with utf8 encoding (#8408).

Patch from Koji.

lib/encodings

@@ -183,6 +183,8 @@ Encoding jis-plain JIS-pLaTeX "Japanese (non-CJK) (JIS)" ISO-2022-JP variable ja
 End
 Encoding shift-jis-plain SJIS-pLaTeX "Japanese (non-CJK) (SJIS)" CP932 variable japanese
 End
+Encoding utf8 utf8 "Japanese (non-CJK) (utf8)" UTF-8 variable japanese
+End
 
 # This one needs hardcoded support, since the inputenc package does not know
 # tis620-0, and thailatex sets up babel directly to use tis620-0, so the

status.20x

@@ -28,6 +28,8 @@ What's new
 
 * DOCUMENT INPUT/OUTPUT
 
+- Allow additional support for Japanese pLaTeX with utf8 encoding
+  (bug #8408).
 
 
 * TEX2LYX IMPROVEMENTS