comma in @node or @float line

Hi,

I am writing @float line parsing in texi2html and this leads to a question: 
what constructs should be accepted regarding comma in @node and @float line?
It doesn't mean that it should work right now in the current implementations, 
but I think this is a texinfo language feature.

I think that the following should be accepted:

  @node Je suis fran@,{c}ais
  @node Me@comma{} I say

The following should also work in theory because there is no possibility to
use @comma in @verb, but it shouldn't be usefull in all the cases:

  @node @verb{:Me, I say:}

And lastly this is not needed, as @comma can be used instead, but it could be
possible:

  @node @emph{Me, I say}

What do you think?

Pat
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