[OS X TeX] Why won't TeXShop pdflatexmk use index style file with my platexmkrc?

[Murray Eisenberg]

Source file  styledndex.tex:

        \documentclass{book}
        
        \usepackage{makeidx}
        \makeindex
        
        \begin{document}
        
        Some text.\index{apple}\index{apricot}
        \index{banana}\index{blackberry}\index{blueberry}
        \index{currant}\index{cherry}
        \index{date}

        
        \printindex
        
        \end{document}

Index style file styledindex.ist:

        headings_flag 1
        heading_prefix "{\\medskip\\hfill\\large\\textsf{\\textbf{"
        heading_suffix "}}\\hfill}\\medskip\\nopagebreak\n”

When I just (i) run Latex from within TeXShop; (ii) from command line execute

     makeindex -s styledindex.ist styledindex

and (iii) again run latex from within TeXShop, I get the index with the style I expect — each letter group is headed by its letter A, B, C, or D (and in a bold sans-serif).

However, with the following file platexmkrc in the source directory...

    add_cus_dep('idx', 'ind', 0, 'makeidx2ind');
                 sub makidx2ind {
                                system("makeindex —s '$_[0]'.ist -o '$_[0]'.ind '$_[0]'.idx");
                 };

… if instead I run the pdflatexmk engine from within TeXShop, those letter group headings do not appear — the .ist file is being ignored — although of course an index is produced.

What’s wrong?

---
Murray Eisenberg			murrayeisenberg at gmail.com
503 King Farm Blvd #101	Home (240)-246-7240
Rockville, MD 20850-6667	Mobile (413)-427-5334


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