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Direc­tory macros/texinfo/texinfo/tp

$Id: README 6252 2015-05-06 17:37:57Z karl $

  Copyright 2011, 2012, 2013, 2014, 2015 Free Software Foundation, Inc.

  Copying and distribution of this file, with or without modification,
  are permitted in any medium without royalty provided the copyright
  notice and this notice are preserved.

Texinfo::Parser (hence the directory name tp) is a Perl module for
parsing Texinfo code into a tree representing the Texinfo code

These other modules and libraries are required (all have been standard
parts of Perl for years, at least since 5.7.3):
  Carp, Config, Data::Dumper, Encode, File::Basename, File::Spec
  Getopt::Long, Unicode::Normalize, Storable

It also uses the less widely-available modules:
  Locale::Messages, Unicode::EastAsianWidth, Text::Unidecode
For these, internal versions are included, and are installed and used as
part of Texinfo (not disturbing the Perl installation at all).

To run the tests you also need:
  Test::More, Data::Compare, Test::Deep
On Debian-based distros, Test::More is part of perl-modules and thus 
installed with perl, the packages corresponding to the other modules
are named:
  libdata-compare-perl libtest-deep-perl

The tests are in the subdirectories t/ and test/.  The tests in t/ test 
the Perl modules used by the makeinfo command, and the tests in test/ 
test the command itself.

This module is part of GNU Texinfo.  A standalone Perl module may also be
produced from within the the Texinfo tree, using 
The resulting module, although standalone, should always be regenerated
from the sources in Texinfo, to avoid divergence of sources.

If you want to delve into making a new backend, the documentation in
tp/Texinfo/Convert/Converter.pm is a good starting point, as it
describes the existing backends and other places to look.  To do a good
job, expect to spend a lot of time making it do the right thing with the
existing tests.

tp builds a complicated parse tree.  It can output a lot of debug
information about the tree, and what it's doing generally.  For example,
these commands output the tree (in different forms):
  makeinfo -c DUMP_TREE=1 -c TEXINFO_OUTPUT_FORMAT=parse document.texi
  makeinfo -c TEXINFO_OUTPUT_FORMAT=debugtree document.texi
In addition (or instead) setting the DEBUG configuration variable will
dump more information about what it's doing.
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