Dotted leader in index entries

[Duncan Hothersall <dh@capdm.com>]

  [Reposting because I think my last message got mangled.]

Hello all.

I'm using Mk II. When I use the following setup to get dotted leaders 
between an index entry and its page number:

\def\MyIndexTextCmd#1{#1\dotfill}
\setupregister[Index][n=2,textcommand=\MyIndexTextCmd,distance=1em,alternative=A]

it works okay producing output like this:

Index entry.....123

except when the entry text is just long enough to fill up the horizontal 
space, pushing the number over onto the next line. What I get in that 
scenario is this:

Index entry text...
   123

This is no good. What I really need is for all page numbers to be at the 
right hand side, with leading dots. So I'd like a solution to produce 
either this:

Index entry text...
   ....................123

or preferably this:

Index entry
   text..............123

At the moment I'm putting forced line breaks before the last word to 
achieve what I need, but I would really like to automate this!

Thanks for any help, hope the issue is clear.

Duncan

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