Re: [Index] Indenting long primaries after secondaries

[Hans Hagen <pragma@wxs.nl>]

On 3/16/2014 4:34 PM, Jan Tosovsky wrote:
> On 2014-03-16 Hans Hagen wrote:
>> On 3/7/2014 6:54 PM, Jan Tosovsky wrote:
>>> On 2014-02-26 Jan Tosovsky wrote:
>>>>
>>>> when a long primary is preceded with the secondary or tertiary
>>>> index entry, the second line is not indented as usual, see
>>>> the following example:
>>>>
>>>> \setupregister[balance=no]
>>>> \starttext
>>>> \index{primary+secondary+tertiary}
>>>> \index[primary long]{\dorecurse{5}{primary long }}
>>>> \index[primary longer]{\dorecurse{5}{primary longer }} % Ok
>>>> \input{tufte}
>>>> \completeindex
>>>> \stoptext
>>>>
>>
>> how is a \dorecurse supposed to get sorted ...
>>
>
> That \dorecurse is used in this MWE only to make it shorter. Indeed, this
> command confuses the letter grouping procedure so this is the reason why I
> specified the sorting key via the bracket syntax [].
>
> I think there is no need to fix this grouping issue (not enough ROI), but if
> so, I would expect to resolve the \dorecurse command first and then apply
> the grouping/sorting etc.
>
> My main wish is fixing that indentation (or offering any workaround).

stylistic variant:

\defineprocessor[twolines][command=\MyStyle]

\unexpanded\def\MyStyle#1%
   {\setbox\scratchbox\hbox{#1}%
    \scratchdimen\dimexpr\hsize-\leftskip-\hangindent\relax
    \ifdim\wd\scratchbox>\scratchdimen
      \aftergroup\hangafter
      \aftergroup\plustwo
      \aftergroup\break
    \else\ifdim\wd\scratchbox>2\scratchdimen
      \aftergroup\hangafter
      \aftergroup\plustwo
      \aftergroup\break
    \fi\fi
    \unhbox\scratchbox}

\setupregister
   [balance=no]

\setupregister
   [index:1]
   [textstyle=\MyStyle]

\starttext
     \index{primary+secondary+tertiary}
     \index{twolines->primary long primary long primary long primary 
long primary long}
     \index{twolines->primary longer primary longer primary longer 
primary longer primary longer}
     \input{tufte}
     \completeindex
\stoptext


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