Justifying last line of paragraph

Justifying last line of paragraph

[Elias Oltmanns]

Hi there,

what I'm trying to achieve is splitting a paragraph into two -- from
TeX's point of view -- that still look like one single paragraph. To
this end, I have to make sure that the last line of the first paragraph
is justified just like all the surrounding lines, so, in the pdf output
one couldn't tell that this is actually the end of a paragraph. so, How
can I force the last line to be justified as well?

In order to see the reason for my question, consider the following
example:

\setupwhitespace[big]
\setupalign[line]
\starttext
\dorecurse{3}{\input knuth\par}
\placefigure[right][fig:test1]{Basically just a bit of empty space.}
{\framed[width=0.5\textwidth,height=0.4\textheight,offset=none]{Test}}
{\input tufte\par}
\stoptext

The first couple of lines of the paragraph beginning on page two should
really go on the previous page. Since the hang mechanism of \placefigure
doesn't work due to the page break, I'd like to split this paragraph
into two logical entities, so TeX can put the first on the first page
and treat the second as a separate paragraph flowing around the picture.
However, the reader should not be aware of this split.

Any help much appreciated,

Elias
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Re: Justifying last line of paragraph

[Taco Hoekwater]

On 09/25/2010 08:03 PM, Elias Oltmanns wrote:
>
> The first couple of lines of the paragraph beginning on page two should
> really go on the previous page. Since the hang mechanism of \placefigure
> doesn't work due to the page break, I'd like to split this paragraph
> into two logical entities, so TeX can put the first on the first page
> and treat the second as a separate paragraph flowing around the picture.
> However, the reader should not be aware of this split.
>
> Any help much appreciated,

I don't know of any automatic solution to this problem (except _perhaps_
columnsets could help) but the simplest way to split a paragraph into
two paragraphs while still looking like one is by inserting a macro
like this at an existing break point:

\def\splitpar
  {\bgroup
   \parfillskip\zeropoint
   \par
   \aftergroup \parskip
   \aftergroup \zeropoint
   \aftergroup \noindentation
   \egroup }

\splitpar will work anywhere in a paragraph, but you only get a
visually pleasing result when it is applied at, or close to, a break
that would have been chosen anyway.

Best wishes,
Taco
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___________________________________________________________________________________

Re: Justifying last line of paragraph

[Elias Oltmanns]

Taco Hoekwater <taco@elvenkind.com> wrote:
> On 09/25/2010 08:03 PM, Elias Oltmanns wrote:
>>
>
>> The first couple of lines of the paragraph beginning on page two should
>> really go on the previous page. Since the hang mechanism of \placefigure
>> doesn't work due to the page break, I'd like to split this paragraph
>> into two logical entities, so TeX can put the first on the first page
>> and treat the second as a separate paragraph flowing around the picture.
>> However, the reader should not be aware of this split.
>>
>> Any help much appreciated,
>
> I don't know of any automatic solution to this problem (except _perhaps_
> columnsets could help) but the simplest way to split a paragraph into
> two paragraphs while still looking like one is by inserting a macro
> like this at an existing break point:

Thanks Taco, this appears to be exactly what I was looking for. One more
thing though: is there a simple way to arrange for all arguments
provided to \splitpar to be passed on to \placefigure in a definition
like this:

>
> \def\splitpar
>  {\bgroup
>   \parfillskip\zeropoint
>   \par
    \aftergroup \placefigure    % arguments to \splitpar should be passed on
>   \aftergroup \parskip
>   \aftergroup \zeropoint
>   \aftergroup \noindentation
>   \egroup }

Thanks for your help,

Elias
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___________________________________________________________________________________

Re: Justifying last line of paragraph

[Taco Hoekwater]

On 09/26/2010 06:01 PM, Elias Oltmanns wrote:
> Taco Hoekwater<taco@elvenkind.com>  wrote:
>> On 09/25/2010 08:03 PM, Elias Oltmanns wrote:
>>>
>>
>>> The first couple of lines of the paragraph beginning on page two should
>>> really go on the previous page. Since the hang mechanism of \placefigure
>>> doesn't work due to the page break, I'd like to split this paragraph
>>> into two logical entities, so TeX can put the first on the first page
>>> and treat the second as a separate paragraph flowing around the picture.
>>> However, the reader should not be aware of this split.
>>>
>>> Any help much appreciated,
>>
>> I don't know of any automatic solution to this problem (except _perhaps_
>> columnsets could help) but the simplest way to split a paragraph into
>> two paragraphs while still looking like one is by inserting a macro
>> like this at an existing break point:
>
> Thanks Taco, this appears to be exactly what I was looking for. One more
> thing though: is there a simple way to arrange for all arguments
> provided to \splitpar to be passed on to \placefigure in a definition
> like this:

Something like this should work:

    \def\splitpar#1%
      {\bgroup
      ....
       \gdef\splitparcommands{\placefigure#1\parskip...}%
       \aftergroup \splitparcommands
       \egroup}

The definition is all about \aftergroup: each \aftergroup adds exactly
one *token* to the list of things to run after the group ends. Passing
arguments that way is tedious and very error prone (you would need
something like \adtergroup [ \aftergroup l \aftergroup e \aftergroup f
... ), so defining a global macro and passing that is better.

I did not do this in the earlier version because if you can get around
using \gdef, it is usually wise to do so. Sorry, I have no idea whether
it is possible to do this stuff with a nicer, more ConTeXt interface.

Best wishes,
Taco









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