PDFlib TET PDF IFilter 4.0 Manual
PDFlib TET PDF IFilter 4.0 Manual
PDFlib TET PDF IFilter 4.0 Manual
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Table 2.3 Examples for the fold option<br />
description and option list before folding after folding<br />
Replace all characters in a Unicode set with a specific character<br />
Space folding: map all variants of Unicode space characters to U+0020:<br />
fold={{[:blank:] U+0020}}<br />
Dashes folding: map all variants of Unicode dash characters to U+002D:<br />
fold={{[:Dash:] U+002D}}<br />
Replace all unassigned characters (i.e. Unicode code points to which no character<br />
is assigned) with U+FFFD: fold={{[:Unassigned:] U+FFFD}}<br />
Special handling for individual characters<br />
Preserve all hyphen characters at line breaks while keeping the remaining default<br />
foldings. Since these characters are identified internally in <strong>TET</strong> (as opposed to having<br />
a fixed Unicode property) the keyword _dehyphenation is used to identify the<br />
folding’s domain: fold={{_dehyphenation preserve}}<br />
Preserve Arabic Tatweel characters (which are removed by default):<br />
fold={{[U+0640] preserve}}<br />
Replace various punctuation characters with their ASCII counterparts:<br />
fold={ {[U+2018] U+0027} {[U+2019] U+0027} {[U+201C] U+0022}<br />
{[U+201D] U+0022}}<br />
<br />
U+00A0<br />
<br />
U+2011<br />
<br />
U+03A2<br />
<br />
U+002D<br />
<br />
U+0640<br />
<br />
U+201C<br />
<br />
U+0020<br />
<br />
U+002D<br />
<br />
U+FFFD<br />
<br />
U+002D<br />
<br />
U+0640<br />
<br />
U+002D U+0022<br />
2.4 Unicode Postprocessing 29
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