Subject: Re: [xsl] Hyphenation in XSL FO From: "Sebastian Rahtz" <sebastian.rahtz@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> Date: Tue, 9 Jan 2001 23:09:17 +0000 |
Gustaf Liljegren writes: > intention is (please correct) that implementors has to learn and make > hyphenation rules for different countries, languages and scripts. First of > all, it must be quite a large job only to implement half a dozen of the > most common cases within ISO 8859-1. its been done already, for many languages > The only way to get things right is a hyphenation dictionary, like in > DSSSL, FOSI or TeX. This is what I'm thinking about: > > <fo:block hyphenation-exception="uri(list.txt)"> DSSSL is not a formatter, so how can it have a hyphenation exception dictionary. Cant speak for FOSI, but TeX's hyphenation exception lists are bundled with the patterns, and compiled in, not read at runtime. > appropriate places. When a word needs hyphenation the formatter check this > file to see in which places the word may be hyphenated. quite. the formatter, not XSL FO.... > list are never hyphenated. If this feature is not added, I'm afraid we'll > have to wade through a lot of FO code to correct bad hyphenation before > processing the final output. you dont know what the hyphenation is going to be, when you read a FO file.. > For URIs, a special problem arise. A URI is often resulting in large spaces > on the following line. The best way I've seen to avoid that is to break the > URI after a "/", but without hyphen. Any ideas for how this exception could > be solved? thats a nasty one. we solved it years ago in TeX, by putting TeX temporarily into a math mode. I cant see how to do it in FO > Ideally, there would be no need for hyphenation at all. The most convenient > way to avoid it is to work with the space between words. Most layout > programs today do this one row at a time, instead of working with the whole > paragraph, and this seem to be the intent in XSL aswell. Why not a > hyphenation that check and adjust the whole paragraph? as Knuth showed us 15 years ago already.... > Finally, I think there should be a property for setting the minimum number > of characters for hyphenated words. isnt that hyphenation-push-character-count and hyphenation-remain-character-count? sebastian XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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