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--HG-- rename : intl/hyphenation/src/COPYING => intl/hyphenation/COPYING rename : intl/hyphenation/src/COPYING.LGPL => intl/hyphenation/COPYING.LGPL rename : intl/hyphenation/src/COPYING.MPL => intl/hyphenation/COPYING.MPL rename : intl/hyphenation/src/README => intl/hyphenation/README rename : intl/hyphenation/src/README.compound => intl/hyphenation/README.compound rename : intl/hyphenation/src/README.hyphen => intl/hyphenation/README.hyphen rename : intl/hyphenation/src/README.mozilla => intl/hyphenation/README.mozilla rename : intl/hyphenation/src/README.nonstandard => intl/hyphenation/README.nonstandard rename : intl/hyphenation/src/hnjalloc.h => intl/hyphenation/hnjalloc.h rename : intl/hyphenation/src/hnjstdio.cpp => intl/hyphenation/hnjstdio.cpp rename : intl/hyphenation/src/hyphen.c => intl/hyphenation/hyphen.c rename : intl/hyphenation/src/hyphen.h => intl/hyphenation/hyphen.h rename : intl/hyphenation/src/nsHyphenationManager.cpp => intl/hyphenation/nsHyphenationManager.cpp rename : intl/hyphenation/public/nsHyphenationManager.h => intl/hyphenation/nsHyphenationManager.h rename : intl/hyphenation/src/nsHyphenator.cpp => intl/hyphenation/nsHyphenator.cpp rename : intl/hyphenation/public/nsHyphenator.h => intl/hyphenation/nsHyphenator.h
88 lines
2.9 KiB
Plaintext
88 lines
2.9 KiB
Plaintext
New option of Libhyphen 2.7: NOHYPHEN
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Hyphen, apostrophe and other characters may be word boundary characters,
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but they don't need (extra) hyphenation. With NOHYPHEN option
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it's possible to hyphenate the words parts correctly.
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Example:
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ISO8859-1
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NOHYPHEN -,'
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1-1
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1'1
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NEXTLEVEL
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Description:
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1-1 and 1'1 declare hyphen and apostrophe as word boundary characters
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and NOHYPHEN with the comma separated character (or character sequence)
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list forbid the (extra) hyphens at the hyphen and apostrophe characters.
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Implicite NOHYPHEN declaration
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Without explicite NEXTLEVEL declaration, Hyphen 2.8 uses the
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previous settings, plus in UTF-8 encoding, endash (U+2013) and
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typographical apostrophe (U+2019) are NOHYPHEN characters, too.
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It's possible to enlarge the hyphenation distance from these
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NOHYPHEN characters by using COMPOUNDLEFTHYPHENMIN and
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COMPOUNDRIGHTHYPHENMIN attributes.
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Compound word hyphenation
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Hyphen library supports better compound word hyphenation and special
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rules of compound word hyphenation of German languages and other
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languages with arbitrary number of compound words. The new options,
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COMPOUNDLEFTHYPHENMIN and COMPOUNDRIGHTHYPHENMIN help to set the right
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style for the hyphenation of compound words.
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Algorithm
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The algorithm is an extension of the original pattern based hyphenation
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algorithm. It uses two hyphenation pattern sets, defined in the same
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pattern file and separated by the NEXTLEVEL keyword. First pattern
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set is for hyphenation only at compound word boundaries, the second one
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is for hyphenation within words or word parts.
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Recursive compound level hyphenation
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The algorithm is recursive: every word parts of a successful
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first (compound) level hyphenation will be rehyphenated
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by the same (first) pattern set.
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Finally, when first level hyphenation is not possible, Hyphen uses
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the second level hyphenation for the word or the word parts.
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Word endings and word parts
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Patterns for word endings (patterns with ellipses) match the
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word parts, too.
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Options
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COMPOUNDLEFTHYPHENMIN: min. hyph. dist. from the left compound word boundary
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COMPOUNDRIGHTHYPHENMIN: min. hyph. dist. from the right comp. word boundary
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NEXTLEVEL: sign second level hyphenation patterns
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Default hyphenmin values
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Default values of COMPOUNDLEFTHYPHENMIN and COMPOUNDRIGHTHYPHENMIN are 0,
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and 0 under the hyphenation, too. ("0" values of
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LEFTHYPHENMIN and RIGHTHYPHENMIN mean the default "2" under the hyphenation.)
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Examples
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See tests/compound* test files.
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Preparation of hyphenation patterns
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It hasn't been special pattern generator tool for compound hyphenation
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patterns, yet. It is possible to use PATGEN to generate both of
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pattern sets, concatenate it manually and set the requested HYPHENMIN values.
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(But don't forget the preprocessing steps by substrings.pl before
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concatenation.) One of the disadvantage of this method, that PATGEN
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doesn't know recursive compound hyphenation of Hyphen.
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László Németh
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<nemeth (at) openoffice.org>
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