which completion function are used for aliases?

[Andy Spiegl <zsh.Andy@spiegl.de>]

When completing the options of an alias, is there a way to make zsh use the
completion function of the corresponding command?

Say, if
 condor:~>print ${_comps[program1]}   
 _program1

 condor:~>alias program2
 program2=program1 --param1

then I would like zsh to use the completion function _program1 for the
completion of program2?  Of course I could manually define
 compdef _program1 program2

But is it possible to that automatically for (simple) aliases?

Chau,
 Andy.

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