add ktrans. こんにちは!

sys/man/1/ktrans

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+.TH KTRANS 1
+.SH NAME
+ktrans \- language transliterator
+.SH SYNOPSIS
+.B ktrans
+.SH DESCRIPTION
+The
+.I ktrans
+program works with
+.IR kbdfs (8)
+to transliterate typed letter sequences into characters for languages
+that do not use the Latin character set, and pipes the result to
+.BR /dev/cons .
+The language is selected by typing a control character:
+.TP
+.B ctl-t
+return to default English mode (no transliteration).
+.TP
+.B ctl-n
+Japanese hiragana: interpret lower-case letters as a Hepburn
+representation of hiragana.  In this mode, typing ctl-\\ looks up the
+last `word' in a hiragana-kanji dictionary and replaces it.
+Subsequent ctl-\\ characters cycle through the possibilities.  A word
+is the longest immediately preceding unbroken string of hiragana
+characters.
+.TP
+.B ctl-k
+Japanese katakana.
+.TP
+.B ctl-l
+If you want to put the hiragana not converted, you can type.
+.TP
+.B ctl-x
+Read kana-kanji conversion dictionary once more, and renews it.  This
+will be convenient when you updated kana-kanji conversion dictionary
+on such acme editor.In default, the kana-kanji conversion dictionary
+is read once at beginning and to make a hashed table, which will be
+arranged so that the last selected candidate will be the first
+candidate for later search.
+.TP
+.B ctl-r
+Russian: interpret letters as Cyrillic; the transliteration is mostly
+phonetic, with
+.B '
+for
+.IR myagkij-znak
+(ь),
+.B ''
+for
+.I tverdyj-znak
+(ъ)
+.I yo
+for ё,
+.B j
+for
+.IR i-kratkaya
+(й).
+.TP
+.B ctl-o
+Greek.
+.TP
+.B ctl-s
+Korean.
+.PP
+To use it you have to run it before a rio session. You can put it on your $home/lib/profile like:
+.EX
+	...
+	ktrans
+	rio -i riostart
+	...
+.EE
+or run it with a sub-rio on a window like:
+.EX
+	% @{ktrans; rio}
+.EE
+.PP
+.SH SOURCE
+.B /sys/src/cmd/ktrans
+.SH SEE ALSO
+.IR rio (1)
+.IR kbdfs (8)
+.br
+.IR /sys/src/cmd/ktrans/README.kenji
+.br
+.IR /sys/src/cmd/ktrans/READMEJ.kenji
+.SH EXAMPLES
+If you want to make the Japanese text as below:
+
+私は毎日35分以上歩いて、 更に10分電車に乗って学校に通います。
+ 健康の維持にも役だっていますが、 なかなかたのしいものです。
+
+your keyboard typing stream should be:
+
+[^l]watashiHA[^\\]mainichi[^\\]35[^l]fun[^\\]ijou[^\\]aruIte, 
+[^\\]saraNI[^\\]10[^l]fun[^\\]denshaNI[^\\]noTte[^\\]gakkouNI
+[^\\]kayoImasu.[^\\]kenkouNO[^\\]ijiNImo[^\\]yakuDAtteimasuga,
+[^\\]nakanakatanoshiImonodesu.
+
+where [^\\] and [^l] indicate 'ctl-\\' and 'ctl-l',
+respectively.  See README.kenji for the details of this Japanese input
+method.
+.SH BUGS
+.PP
+There is no way to generate the control characters literally.  At the
+beggining of a new line, you have to begin with ctl-l for successful
+kana-kanji conversion.