douple counting in imakeidx

Question

I am writting on a scientific paper with genealogical content. Therefore, many many names occur in my file. Hence, I made an index of all names with imakeidx. Now to my problem:

Sometimes, two persons have the same name and occur on the same page of the pdf-file. Therefore, the entry with this name occurs only once in the index. But I want that EVERY person mentioned in my paper to be in the index. Is there a possibility for that?

Here is my minimal latex code:

\documentclass[10pt,a4paper]{book}
\usepackage[paper=a4paper,left=25mm,right=25mm,top=25mm,bottom=50mm]{geometry}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage[english]{babel}

\usepackage{imakeidx}
\makeindex[name=A,title={index of mentioned persons},columns=2] 

\begin{document}
John Doe\index[A]{John Doe}\newline
John Doe\index[A]{John Doe}


\printindex[A] 
\end{document}

The output of this example is then something like

John Doe, 1

But I want something like

John Doe, 1, 1

EDIT: Please dont question the reason why I need it in that way. I know it looks strange. I just need it for a certain statistical evaluation.

Answer 1

You should have an .ind and an `.idx file. Look for the "duplicate" names in the .ind file, which is in alphabetical order, and observe the page numbers that are duplicated, and also any additional page numbers.

Makeindex has a "dumb" ASCII sort. If entries aren't exactly the same, spaces and all, they'll be sorted separately, so the solution is usually to get rid of "extra" spaces.

Look for the names in the .idx file, which is sorted in page number order. Since the entries are in braces, it will be easy to see anomalous spaces.

Now go into the text file, locate the entry that doesn't match, and fix it. Fix any other entries that appeared on the "extra" line in the index so you don't need to go through this procedure again. Do this for all duplicate names, Then rerun.

By the way, you won't ever get a listed entry

John Doe, 1, 1

All instances on the same page will be listed under a single page number.