[XeTeX] Depth of an index entry.

[Sharon Kimble]

How can I have an index entry to a depth of 4? This works -
╭────
│\index{ginseng!side-effects!nausea}
╰────
but this doesn't -
╭────
│\index{herbals!ginseng!s/e!insomnia}
╰────

I am using -
--8<---------------cut here---------------start------------->8---
\documentclass{scrreprt}
\usepackage{imakeidx}
\makeindex[options=-s ./index.ist,columnseprule,intoc]
\usepackage[colorlinks=true,linkcolor=blue,citecolor=green,linktoc=all,hyperindex=true]{hyperref}
--8<---------------cut here---------------end--------------->8---

I've been looking at "imakeidx.pdf" but can't see anywhere where the
depth is defined, so I'm stumped.

Thanks
Sharon.
-- 
A taste of linux = http://www.sharons.org.uk
my git repo = https://bitbucket.org/boudiccas/dots
TGmeds = http://www.tgmeds.org.uk
Debian testing, fluxbox 1.3.5, emacs 24.3.92.1
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 818 bytes
Desc: not available
URL: <http://tug.org/pipermail/xetex/attachments/20140731/96130361/attachment.bin>