Default keymap conflicts with national characters

[vac]

After installing FileHeader plugin I'm unable to enter some Polish language-specific characters:

• ś (right alt + s)
• ń (right alt + n)

Other plugins have the same issue: http://stackoverflow.com/questions/25924373/certain-national-characters-blocked-in-sublime-text-3 As it's written by trejder, it's mainly because:

Sublime Text 3 doesn't make any difference between pressing Right Alt and Ctrl+Left Alt

When I deleted all bindings from FileHeader default keymap it's working fine.

[shiyanhui]

Maybe you could change the key-map of FileHeader.

[vac]

@shiyanhui Yes, I'v changed it and it's fine. But I think that default keymap shouldn't conflict with language specific characters.