Jan Weytjens wrote:
I use a Belgian azerty keyboard and use nmap in _vimrc (vim 7.0 on
Windows 2000) to map the ² and µ keys to ~ (² is more or less in the
same place on the keyboard as the tilde on an american qwerty and one
can think of µ as standing for Majuscule).
These mappings don't work in files for which the encoding and
fileencoding are set to utf-8 (.xsd files, ...).
It does not make a difference what the encoding and fileencoding of
_vimrc are (latin-1 or utf-8).
Changing the encoding to latin-1 at the ex prompt makes it work (but
makes special characters unreadable).
Changing the encoding back to utf-8 at the ex prompt makes the mapping
stop working.
Curiously, when the mapping is done at the ex prompt (with the
encoding set to utf-8), then it does work.
Also, some scripts don't work when the encoding is utf-8 (e.g.,
EnhancedCommentify-2.2 with Alt-X).
Is there a way to make them work in utf-8 encoded files?
Jan
1) Make sure that Vim still interprets your keyboard data as 8-bit, not
Unicode, if the OS default is 8-bit. This is done when switching over to
UTF-8
if &termencoding == ""
let &termencoding = &encoding
endif
set encoding=utf-8
Rationale: The 'termencoding' option, which tells Vim how the keyboard
sends data, is empty by default. An empty value means "use the value of
'encoding'". That's OK as long as you don't set 'encoding' yourself (the
default for 'encoding' is got from the OS at startup time.) But if you
change 'encoding', that doesn't make the keyboard driver send its data
any differently.
2) If this doesn't work, keep it, but add
scriptencoding latin1
near the top of your vimrc.
3) If if it _still_ doesn't work, keep both (1) and (2), but try
redefining the mappings in addition, as follows:
function! SpecialMaps()
" remove mappings if defined
silent! unmap <Char-178>
silent! unmap! <Char-178>
silent! unmap <Char-181>
silent! unmap! <Char-181>
" map exponent 2 to tilde
noremap <Char-178> <Char-126>
noremap! <Char-178> <Char-126>
" map Greek mu to tilde
noremap <Char-181> <Char-126>
noremap! <Char-181> <Char-126>
" if we need more mappings with bytes >= 128,
" add them here.
endfunction
if has("autocmd") && version >= 700
augroup vimrcmaps
au! EncodingChanged * SpecialMaps()
augroup END
endif
Rationale: Characters above 127 are represented in memory (and on disk)
by more than one byte in UTF-8. From 128 to 255 the character number (as
shown in <Char-nnn>) is the same for Latin1 and UTF-8 but the byte
representation is different.
The "if" statement takes care of the fact that EncodingChanged is new in
version 7.
The map statements without bang are for Normal, Visual, etc.; with bang
they are for Insert, Command-Line, etc.
4) If it still doesn't work, wrap the map lines in the function above in
":exe" commands with an argument in _single_ quotes, for instance
exe 'noremap <Char-181> <Char-126>'
This will force evaluation of <> when storing the mapping, not the function.
Best regards,
Tony.
