Add option to c:alias to alias structure contents

[Shamino0]

Thank you very much for the c:alias directive. It allows me to copy bits and pieces from my Doxygen-generated contents (produced using Breathe) to other locations in my document without breaking the links to the definitions.

For functions and macros, the alias is just what I want - I get the symbol, the return value and the parameters.

When displaying an alias of a struct, however, all I see is the name of the struct. This isn't terribly useful - it's no better than a :c:struct:`foo_t` statement.

Would it be possible to add an option to c:alias so the list of the fields could be displayed with the structure name itself?

For example:

.. c:struct:: Data

   .. c:var:: int a

   .. c:var:: double b

Assorted text here

.. c:alias:: Data
   :members:

More random text

.. c:alias:: Data

Rendering as:

struct Data
   int a
   double b

Assorted text here

struct Data
   int a
   double b

More random text

struct Data

[jakobandersen]

Good idea!