After receiving several bug reports from users in one of my scripts, I
came across this strange behavior. If GVim is being run in a different
language, most functions cannot be called with floating point numbers
as arguments. Here are the steps to reproduce:

file: test.vim ----------------------------------

function TestFloat(secret_number)
    echo a:secret_number
endfunction

call TestFloat(3.14)

-----------------------------------------------------

> export LANG=de_DE.utf-8
> gvim

:source test.vim

Produces:

E806: using Float as String
E116: Invalid arguments for function TestFloat

This test, and all my bug reports, have come running Ubuntu 9.04.

>From :version ....

VIM - Vi IMproved 7.2 (2008 Aug 9, compiled Dec  6 2009 10:55:12)
Included patches: 1-315
Compiled by nra...@nraffo-laptop
Normal version with GTK2 GUI.  Features included (+) or not (-):
-arabic +autocmd +balloon_eval +browse +builtin_terms +byte_offset
+cindent +clientserver +clipboard +cmdline_compl +cmdline_hist
+cmdline_info +comments +cryptv
-cscope +cursorshape +dialog_con_gui +diff +digraphs +dnd -ebcdic -
emacs_tags +eval +ex_extra +extra_search -farsi +file_in_path
+find_in_path +float +folding
-footer +fork() +gettext -hangul_input +iconv +insert_expand +jumplist
-keymap -langmap +libcall +linebreak +lispindent +listcmds +localmap
+menu +mksession
+modify_fname +mouse +mouseshape -mouse_dec +mouse_gpm -mouse_jsbterm -
mouse_netterm -mouse_sysmouse +mouse_xterm +multi_byte +multi_lang -
mzscheme +netbeans_intg
-osfiletype +path_extra -perl +postscript +printer -profile -python
+quickfix +reltime -rightleft -ruby +scrollbind +signs +smartindent -
sniff +startuptime
+statusline -sun_workshop +syntax +tag_binary +tag_old_static -
tag_any_white -tcl +terminfo +termresponse +textobjects +title
+toolbar +user_commands +vertsplit
+virtualedit +visual +visualextra +viminfo +vreplace +wildignore
+wildmenu +windows +writebackup +X11 -xfontset +xim +xsmp_interact
+xterm_clipboard -xterm_save
   system vimrc file: "$VIM/vimrc"
     user vimrc file: "$HOME/.vimrc"
      user exrc file: "$HOME/.exrc"
  system gvimrc file: "$VIM/gvimrc"
    user gvimrc file: "$HOME/.gvimrc"
    system menu file: "$VIMRUNTIME/menu.vim"
  fall-back for $VIM: "/home/nraffo/bin/vim/share/vim"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H -DFEAT_GUI_GTK  -
D_REENTRANT -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/
include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/
include/pixman-1 -I/usr/include/freetype2 -I/usr/include/directfb -I/
usr/include/libpng12 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/
include     -g -O2 -D_FORTIFY_SOURCE=1
Linking: gcc   -L/usr/local/lib -o vim   -lgtk-x11-2.0 -lgdk-x11-2.0 -
latk-1.0 -lpangoft2-1.0 -lgdk_pixbuf-2.0 -lpangocairo-1.0 -lgio-2.0 -
lcairo -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0 -lgmodule-2.0
-lglib-2.0   -lXt -lm -lncurses -lselinux -lacl -lgpm


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