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authorKarl Berry <karl@freefriends.org>2013-04-07 18:26:53 +0000
committerKarl Berry <karl@freefriends.org>2013-04-07 18:26:53 +0000
commitb04c2e1a42573e9735547702356c7b9a769a6855 (patch)
treec0753443f39500a062d7698fe6b94359c813f871 /Master/texmf-dist/doc/man/man1/ot2kpx.1
parentfb0bf13304a356f197bfc1add17f98c07e96f17b (diff)
texmf -> texmf-dist: doc
git-svn-id: svn://tug.org/texlive/trunk@29714 c570f23f-e606-0410-a88d-b1316a301751
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+.\" ========================================================================
+.\"
+.IX Title "OT2KPX 1"
+.TH OT2KPX 1 "2012-03-06" "fontools" "Marc Penninga"
+.\" For nroff, turn off justification. Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH "NAME"
+ot2kpx \- extract kerning information from OpenType fonts
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+.IP "\fBot2kpx\fR" 8
+.IX Item "ot2kpx"
+\&\fBfontfile\fR
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+\&\fBot2kpx\fR extract the kerning data from OpenType fonts (both \fIotf\fR
+and \fIttf\fR formats) and prints it (in \fIafm\fR format) to \f(CW\*(C`stdout\*(C'\fR.
+.SH "OPTIONS AND ARGUMENTS"
+.IX Header "OPTIONS AND ARGUMENTS"
+.IP "\fBfontfile\fR" 4
+.IX Item "fontfile"
+The OpenType font (in either \fIotf\fR or \fIttf\fR format).
+.SH "RESTRICTIONS"
+.IX Header "RESTRICTIONS"
+.IP "\fB\-\fR" 4
+.IX Item "-"
+\&\fBot2kpx\fR doesn't implement all of the OpenType specification.
+Things that are missing include: support for font files containing
+multiple fonts, LookupTables with LookupTypes other than 2,
+\&\*(L"kern\*(R" tables with format other than 0 and ValueRecords with
+other types of data than just XAdvance data.
+.Sp
+Most of these limitations don't really matter, since the missing features
+are rare (the only fonts I know of that use them are the non-western fonts
+that come with Adobe Reader). Furthermore, some of these features concern
+(according to the OpenType specification) \fI\*(L"define subtle, device-dependent
+adjustments at specific font sizes or device resolutions\*(R"\fR.
+Since there's no way to express such adjustments in \fIafm\fR format,
+ignoring them seems to be the only option anyway.
+.IP "\fB\-\fR" 4
+.IX Item "-"
+\&\fBot2kpx\fR collects kerning data first from the \*(L"kern\*(R" table, then from
+all LookupTables associated with the \*(L"kern\*(R" feature; if a kerning pair
+occurs multiple times, the first value seen is chosen.
+There are (or may be) several issues with this approach:
+.RS 4
+.IP "\-" 4
+The OpenType specification says that fonts in \fIotf\fR format shouldn't
+use the \*(L"kern\*(R" table at all, just the lookups from the \*(L"\s-1GPOS\s0\*(R" table.
+Many such fonts do, however, contain a \*(L"kern\*(R" table, but no \*(L"\s-1GPOS\s0\*(R" table;
+so we use the \*(L"kern\*(R" table anyway.
+.IP "\-" 4
+Instead of reading all LookupTables, it might be better to let the user
+specify a script and language and process only the LookupTables for
+those values.
+However, at least in the fonts I checked, all script/language combinations
+eventually point to the \fIsame\fR \*(L"kern\*(R" LookupTables, so this approach
+wouldn't make any difference (apart from further complicating the code).
+.RE
+.RS 4
+.RE
+.SH "AUTHOR"
+.IX Header "AUTHOR"
+Marc Penninga <marcpenninga@gmail.com>
+.SH "COPYRIGHT"
+.IX Header "COPYRIGHT"
+Copyright (C) 2005\-2012 Marc Penninga.
+.SH "LICENSE"
+.IX Header "LICENSE"
+This program is free software; you can redistribute it and/or modify
+it under the terms of the \s-1GNU\s0 General Public License as published
+by the Free Software Foundation, either version 2 of the License,
+or (at your option) any later version.
+A copy of the \s-1GNU\s0 General Public License is included with \fBautoinst\fR;
+see the file \fIGPLv2.txt\fR.
+.SH "DISCLAIMER"
+.IX Header "DISCLAIMER"
+This program is distributed in the hope that it will be useful,
+but \s-1WITHOUT\s0 \s-1ANY\s0 \s-1WARRANTY\s0; without even the implied warranty of
+\&\s-1MERCHANTABILITY\s0 or \s-1FITNESS\s0 \s-1FOR\s0 A \s-1PARTICULAR\s0 \s-1PURPOSE\s0.
+See the \s-1GNU\s0 General Public License for more details.
+.SH "RECENT CHANGES"
+.IX Header "RECENT CHANGES"
+(See the source code for the rest of the story.)
+.IP "\fI2012\-02\-01\fR" 12
+.IX Item "2012-02-01"
+Refactored the code, and fixed a number of bugs in the process.
+Updated the documentation.