How to make a file with .pt extension, with xml syntax highlighting and vim's plugin snipmate load pt.snippets?

Question

I have the following in my .vimrc:

au BufNewFile,BufRead *.pt set filetype=xml

This is needed because although I'm editing a file with *.pt extension, it's indeed a valid xml file: setting the filetype like this I can have syntax highlighting.

I'm using vim's snipmate plugin, and tried to create pt.snippets to specific needs since these files are Zope Page Templates (ZPT with TAL).

Now, I have a problem: I don't want to create these snippets in xml.snippets, since they aren't really generic xml snippets, but my *.pt files are set to xml, so when I define my pt snippets they aren't loaded unless I run :set filetype=pt on my pt file on vim - but then I lose syntax highlighting.

I would like to be able to have a pt file, with xml syntax highlighting, to be able to load a pt.snippets file from snipmate. How can I do it?

(I would like to avoid putting my snippets in a generic snippet file, I would like it to be present only in pt.snippets to be easier to maintain.)

Answer 1

How about?:

autocmd BufNewFile,BufRead *.pt setlocal filetype=pt
autocmd BufNewFile,BufRead *.pt setlocal syntax=xml

Answer 2

Snipmate allows for dotted 'filetype' syntax, try:

au BufNewFile,BufRead *.pt set filetype=xml.pt

Answer 3

the syntax is notoriously finnicky for not wanting to support two concurrent filetypes (actually, someone asked this same question yesterday)

au BufRead *.pt set filetype=xml.pt
au BufNewFile *.pt set filetype=xml.pt

jinfield's answer is actually spot-on, but I have had the comma-syntax fail on some versions of vim