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On 29/04/16 05:45, Brian Barker wrote:
Text can be distributed within lines in various ways: left aligned,
centred, right aligned, or justified. The first three modes will
maintain constant, standard spacing between words, but the last
intentionally expands spaces between words in order to fill all lines
with text between the margins. If you don't want your text justified,
don't use that mode. The mode is specified on the Alignment tabs of the
Paragraph and Paragraph Style dialogues.

Can I interject a long-standing issue here, in which LO is by no means the sole offender?

It seems that full justification is always done linewise with no look-ahead. What's done seems something "gather words on a line until the next one won't fit; add spaces to this line to justify".

In pathological cases, this results in well-justified text for some lines, plus atrocious spacing on the next line. (sample random text below). This happens particularly in newspapers, where narrow columns exacerbate the effect, even with hyphenation.

The cure would be to look ahead (I've seen this done using DP) and optimise a whole paragraph at a time, rather than a line at a time. You can simulate this with a manually-inserted line-end near the "XXX" in the sample below (although LO will leave the unneeded space, it shows the general effect.) The overall presentation can be much improved, but clearly the code would be more complex and slower than now.

If anyone's doing a major overhaul of LO, this may perhaps be worth considering.


Sample: try putting this into an A4 page, 2cm margins, TNR 12pt, fully justified). You should get 4 lines, of which the third has 3 long words with large spacing.

F ads dfg sdfg sdffg sdfg sdfg sdf gsd fgs dfg sdfg sdf gsd fgsdf F ads dfg sdfg sdffg sdfg sdfg sdf gsd fgs dfg sdfg sdf gsd fgsdf F ads dfg sdfg sdffg sdfg sdfg sdf gsd fgs dfg sdfg XXX gsd fgsdf ddddddddddddddddddddddd sssssssssssssssssssssss aaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa dfg sdfg sdf gsd fgs dfg sdfg sdf gsd fgsdf

Mike Scott (unet2 <at> [deletethis]
Harlow Essex England

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