RE: Is there any elisp functions to tell whether the cursor is in a comment block?

[Drew Adams]

> I am thinking about a page on EmacsWiki that holds the 
> information. This page could for example have entries like
> 
>    === Tabkey2.el 21=n 22=y 23=y ===
>    elisp:tabkey2.el
> 
>    comment ... comment ...
> 
> ELPA could then fetch information from this page. And users could too.
> 
> The elisp pages on EmacsWiki could at the bottom have a link 
> to this page.


A file-header field in each library file can give the same information. I use
this field, for example:

 ;; Compatibility: GNU Emacs 20.x, GNU Emacs 21.x, GNU Emacs 22.x

However, the field value is free-form at present. A conventional form would let
tools pick up the value.

An advantage is locality of reference and update: some developers are more
likely to update a file header field than a separate wiki page.