Re: where to place \index (again)

[Steffen Wolfrum <context@st.estfiles.de>]

Am 26.06.2011 um 19:47 schrieb Hans Hagen:

> On 26-6-2011 2:54, Thomas A. Schmitz wrote:
>> Hi all,
>> 
>> I'm in the final phase of editing a scholarly book with a pretty big index. What follows is less a question than an observation: no matter where I place the \index command, there can always be unwanted side effects:
>> 
>> foo\index{bar}: here, the entry may point to the page following the name, if the page break falls at this position. Moreover, when this is followed by punctuation or footnotes, there may be a line break between the word and the punctuation/footnote mark. Placing it at the end of a long footnote is asking for even more trouble, because there's a real risk that a page break may occur.
>> 
>> \index{bar}foo: the book is typeset with character protrusion, and this seems to introduce additional material which can disturb line endings, so that lines before such an indexed word appear to be missing one character at the end.
>> 
>> So this is what I observe. Working around this is possible, but painful - I have to check every page for such bad linebreaks or misplaced punctuation marks. My question then is: will it be possible, at one point in luatex development, to find a more robust solution for this? This would be wonderful, I think!
> 
> \index is connected to the next word or when on a line on it own as in \chapter{x} \index{x} <emptyline> text to the next paragraph
> 
> concerning the character protrusion: that looks like a bug so if we can have a small example demonstrating it ... esp the disappearing character is weird


Sure, the minimal example that I posted already twice shows exactly this case: 
The line before an indexed word appears to be missing one character at the end.

See "Case 2" in attached example, please.

Steffen
-------

\showframe

\setupbodyfont[times,10pt]\setupinterlinespace[line=12pt]

\definetolerancemethod
[horizontal]
[MySpace]
{\spaceskip3.02pt plus1.99998pt minus1.0pt\relax}

\setupalign[line,block,hanging]
\setuptolerance[MySpace]

\setupindenting[10pt,yes]

\definepapersize[stw][width=14.7cm,height=22.3cm]
\setuppapersize[stw][stw]

\setuplayout
	[width=113mm,height=572pt,
	backspace=17mm,topspace=17mm,
	header=12pt,headerdistance=6pt,
	footer=36pt,footerdistance=0pt,
	location=middle,marking=off]


\starttext

{\em Case 1: line wrap before dot}

\noindent dieses ist dabei typisch für den Bereich der Architekten- oder
Ingenieurleistungen\index{Ingenieurleistungen}. Warum?

\blank

{\em Case 2: line wrap after visible space}

Bei den Grünen werden neben den beiden Fraktionsvorsitzenden, Renate \index{Künast}Künast und Jürgen Trittin ...
\stoptext

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