[Vim-latex-devel] Smart Quotes in subordinate project file

[Mirko Hessel-v. M. <mir...@pa...>]

Dear Vim-Latexsuite-Developers, 

let me first say thank you for that great piece of software I've been
using for so many years now. 
I'm using vim-latexsuite 1.9.0 with Vim 8.0.

For the first time, I'm now working on a larger multi-file project in
my native language (German), and so this is the first time I come
across the following problem:

The document (a large lecture script) is split into several .tex files
each holding one chapter. There is a master file (Skript.tex) within
which the chapter files are \included. 
This is also marked as main file via a file Skript.tex.latexmain in the
same folder. So compiling works flawlessly also when I'm editing only
one of the chapter files.

However, the smart quotes mechanism does not work when I edit one of
the chapter files. 
As far as I can see, the filetype plugin checks whether the .tex file
contains the line \usepackage[utf8]{inputenc} to set the smart quotes
to the correct Unicode symbols.
Now this works, when I'm in the master file (where I'm rather seldom),
but it does not work in the chapter files. 

What can I do about this? Is it possible e. g. to have the
corresponding TexLet commands issued from a modeline?

Thanks a lot for any help, 

with best regards, 

Mirko