MakeIndex, Nomenclature, Glossaries and Acronyms ⇒ Combining glossaries and index?

[eezacque]

I am working on a document where glossary entries are referred to from the index. This works, until I add conditional text, indicating whether a description was added or not. It looks like TeX falls into an unbounded recursion, but I cannot seem to wrap my head around this. Without adding an index entry, this works. Any help is appreciated.

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\documentclass{article}
\usepackage{imakeidx}
\usepackage{enumitem}
\usepackage[automake]{glossaries}
\makeindex
\makeatletter
\def\ifentry#1#2#3{%
    \edef\tmp{#1}%
    \ifx\tmp\@empty%
        #3%
    \else%
        #2%
    \fi%
}
\makeatother
\newglossarystyle{descriptiontest}{%
    \setglossarystyle{indexgroup}
    \renewcommand{\glossentry}[2]{
        \item \textbf{{\glossentryname{##1}}}
        \edef\tmp{\glsentrydesc{##1}}
        \ifentry\tmp{Description: '\tmp'}{No description}
    }
} 
\newglossaryentry{ham}{name={ham}, description={goes with eggs\index{ham}}}     
\newglossaryentry{eggs}{name={eggs}, description=}     
\makeglossaries
\begin{document}
 \glsaddall
 
 
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Run LaTeX here

[eezacque]

Sorted out by Nicola Talbot on usenet group comp.text.tex:

The glossaries package comes with conditional commands for testing if a
key has been set. \ifglshasdesc not only tests for an empty description
but also tests if the description has simply been set to \nopostdesc: