On 23-5-2011 5:54, Otso Helenius wrote:
it produces larger files, take more runtime and in most cases does
not look better at all; for instance one can argue that protrusion
gives more width but at the same time it introduces the boundary
condition that some characters have to hang; or take hz (expansion)
... when applied so much that it gets visible, it will also lead to
similar shapes in successive lines to look different
so, just enabling these features assuming that the output looks
better is debatable (sometimes adding or removing a word is more
effective)
I agree, in many cases automatic layout of content can look horrific because
the algorithms
aren't able to solve each possible case in a near optimal way (while we as
humans are).
And also, there is no question about it, *every* setting should be possible to
turn on and off
depending on the situation.
Just as with WYSIWYG tools such as InDesign, manual adjustment of layout is
needed to achieve
optimal results. But my actual complaint is this: the example I pasted was a
very trivial
and simple typesetting task. Even the current versions MS Office can
automatically achieve
acceptable paragraph look with the given input. In such case there should not
be any need
to manually adjust spacing and expansion of words nor forcing the column into a
ragged one.
The output of this MKIV source:
\mainlanguage[fi]
\language[fi]
\definefontfeature[default][default][protrusion=quality, expansion=quality]
\setupalign[hz, hanging, spacing]
\starttext
\startcolumns[n=2]
\dorecurse{10}{kolmivaihekilowattituntimittari ympäristöliiketoiminta
epäjärjestelmällisyydellistyttymättömyydellänsäkään
järjestelmällisentelentelemättömyydellänsäkään hääyöaie
kolmivaihekilowattituntimittari ympäristöliiketoiminta
epäjärjestelmällisyydellistyttymättömyydellänsäkään
järjestelmällisentelentelemättömyydellänsäkään hääyöaie}
\stopcolumns
\stoptext
can be downloaded here: https://pi-xi.net/share/context_hyphen.pdf
I also wrote a "close as possible" equivalent of the code above in LaTeX and
compiled it with pdfTeX (TL 2011):
\documentclass[12pt, twocolumn, a4paper, finnish]{article}
\usepackage[utf8]{inputenc}
\usepackage[finnish]{babel}
\usepackage{ae}
\usepackage[auto=true, spacing=true, kerning=true, tracking=true,
protrusion=true, expansion=true]{microtype}
\usepackage{pgffor}
\setlength{\parindent}{0mm}
\newcommand{\Repeat}[2]{\foreach \n in {1,...,#1}{#2}}
\begin{document}
\foreach \n in {1,...,10}{kolmivaihekilowattituntimittari
ympäristöliiketoiminta epäjärjestelmällisyydellistyttymättömyydellänsäkään
järjestelmällisentelentelemättömyydellänsäkään hääyöaie
kolmivaihekilowattituntimittari ympäristöliiketoiminta
epäjärjestelmällisyydellistyttymättömyydellänsäkään
järjestelmällisentelentelemättömyydellänsäkään hääyöaie}
\end{document}
The LaTeX example can be downloaded here:
https://pi-xi.net/share/latex_hyphen.pdf
As can be seen, the neither versions have any specific adjustments done by
hand: both
only have the microtypographic features turned on. There is no comparison, the
pdfTeX
version looks superior: there are no rivers, all lines are justified to equal
length,
and the expansion and spacing are both acceptable.
(1) The 'spacing' options does not work and even gives an error in mkiv)
so remove that one. What version of context are you running? I've
already fotgotten about it but I think it was an experimental pdftesx
feature with side effects. In pdftex hz and protrusion is also somewhat
tricky as it can bleed from one font instance to another (due to
traditional tex's internal font sharing), although context takes some
precautions.
(2) But, more important: add \setuplayout[width=middle] to give context
a more similar opportunity to produce something acceptable. You're now
giving context a disadvantage of narrower columns.
(3) You can remove the \language as you already set \mainlanguage.
(4) In context protrusion and expansion is a font property and applying
it globally to all fonts (with some flag) will not happen. Actually, in
some situations you need to turn it on explicitly (imaging hanging
happening when you're doing a table).
I don't know what latex's default layout setup is but if you want to do
an experiment, you need to make sure that you use the same widths of
columns.
Hans
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