[Texmacs-dev] Input method question

[D TQ]

Hi people,
I recently study the russian input method in texmacs with the intent
to adapt it for vietnamese. As I understand it, the kbd-translit.scm
file uses kbd-map to define the map between typed characters and
translated characters. So to input the word  hàng I can define
("a f" "à")
and type "h a f n g". So far so good. However, life is a little bit
more complicated. Children in school have learned to write the word,
and then place the accent. That means, the word above will be typed as
"h a n g f".
I will omit for now the case of double accents to simplify the case.
What we need is a "lazy substitution", that memory the position of the
vowel (in that case a) and do the substitution later, when the accent
(in that case f) is entered.
I attach a file from the m17n project, which implements this idea
pretty well. Could someone help me to port it to texmacs?

Thank you very much.
Ta

vi-telex.mim
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