SciTe should be able to recognize the most common file
types even if there is no or wrong file extension. For
instance, files starting with "<!DOCTYPE"
oder "<html>" should be recognized as HTML, "<?xml "
as XML, "#! ... python" as Python etc. The Apache web
server has such a feature in the mod_mime_magic
module and there is also a Unix command "file" which
does the same.
I have registered SciTE as my source text editor for the
internet explorer (you can do this with Tweak UI),
however since the file is handed over without extension,
SciTe does not recognize that it is HTML. It would be
nice if SciTE would automatically recognize HTML.