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[Module]
Name=Tree::DAG_Node
Changelog.Creator=Module::Metadata::Changes V 2.06
Changelog.Parser=Config::IniFiles V 2.88

[V 1.29]
Date=2016-03-01T13:39:00
Comments= <<EOT
- After another email exchange with Kent Fredric (via RT) and Karen Etheridge (via the
cpan-testers-discuss mailing list), I've edited Makefile.PL, again, to indicate that
Test::Pod is needed neither for building nor testing this module, but is only needed for
development. Specifically, it's used by xt/author/pod.t, and not elsewhere. See
https://metacpan.org/pod/CPAN::Meta::Spec#PREREQUISITES for more details.
EOT

[V 1.28]
Date=2016-03-01T08:43:00
Comments= <<EOT
- No code changes.
- Rework Makefile.PL so File::Spec, File::Temp, Test::More and Test::Pod are in TEST_REQUIRES.
Many thanx to Kent Fredric in RT#112568 for this suggestion.
- Expand the SYNOPSIS.
- Update MANIFEST.SKIP to include .gitignore.
- Finally add lightweight git tags to distros, so that if you have a Bash alias such as:
alias gl='git log --decorate=full' you'll see something like these 5 lines:
commit 2501bd9672244fe698c0f3e48e142637e92eb7e5 (HEAD, tag: refs/tags/1.28, refs/heads/master)
Author: ronsavage <ron@savage.net.au>
Date: Tue Mar 1 09:16:46 2016 +1100
Update distmeta
The command used to generate the tags looks like:
git tag -afm 'V 1.28 @ Tue Mar 1 09:16:46 2016' 1.28
EOT

[V 1.27]
Date=2015-07-12T11:01:00
Comments= <<EOT
- Remove the line which reads 'use open qw(:std :utf8);'. As Tom Molesworth says:
"Specifically, it turns on the UTF-8 encoding layer on STDIO when any code does
'use Tree::DAG_Node'. That's no good when code is expecting a different encoding
(raw, etc.)". See RT#105798. Karen Etheridge followed up with a comment about it appearing
in another module of mine. Then I checked all my modules (including some not intended for
publication - Local::*) and found about 28 offenders, with some using it inn multiple files.
The original idea came from adopting what Tom Christiansen calls his 'Standard Preamble':
http://www.perl.com/pub/2012/04/perlunicook-standard-preamble.html
All tests still work after removing that line.
- Remove Build.PL. Ship only Makefile.PL.
EOT

[V 1.26]
Date=2015-04-12T13:37:00
Comments= <<EOT
- Fix bug in string2hashref(), which failed on some strings, such as {a => 'b, c'}.
string2hashref() is called by read_tree().
Escaped chars are still not handled.
- Add t/string2hash.t to test new code.
EOT

[V 1.25]
Date=2015-03-22T11:42:00
Comments= <<EOT
- I've deleted the undocumented sub _dump_quote(), which butchered Unicode characters
when it tried to convert ASCII control characters into printable strings (on the assumption
all data is ASCII). Thanx to Dr. Petra Steiner (Germany) for discussion and some testing.
I hope no-one was relying on this sub in output redirected to disk files, or otherwise
saved for later comparisons.
Methods which used to call _dump_quote() now just output the node's name by calling
quote_name(), which is discussed next. Undefined names are output as the string 'undef'.
- Add method quote_name(), which simply returns its input string surrounded by single-quotes.
- Add method decode_lol(). This converts the output of tree_to_lol() and tree_to_simple_lol()
into something which is easy to read. See scripts/read.tree.pl for sample usage.
- Reorder a couple of methods called tree_*(), so that they are in alphabetical order.
- Expand the docs for methods tree_to_*(), re undefined node names.
- Add scripts/write.tree.pl, which creates the test input file t/tree.utf8.attributes.txt.
Note: This latter file is now much more complex that in previous versions.
- Add scripts/read.tree.pl, and it's output file scripts/read.tree.log. This program
demonstrates the output produced by various methods.
- Fix the faulty syntax I had used in Build.PL to identify the github repo.
- Delete and re-create github repo after 'git push' failed to upload the new version.
- Add LICENSE file to MANIFEST.
EOT

[V 1.24]
Date=2015-01-25T14:17:00
Comments= <<EOT
- Clean up discussion in docs of original author's reluctance to allow parameters to new().
- Rewrite bareword filehandles (INX) to use a variable (my $fh).
- Rename github repo from Tree--DAG_Node to Tree-DAG_Node - My new standard.
Update Build.PL and Makefile.PL to match.
- Reformat the docs, and this file, slighty, to be <= 100 chars per line - My new standard.
- Change horizontal indentation used by node2string() to add 1 space, so '|' lines up underneath
the first char of the previous node's name. Use scripts/cut.and.paste.subtrees.pl
to see the difference.
EOT

[V 1.23]
Date=2014-10-20T18:12:00
Comments= <<EOT
- Change output format when using node2string(), which is called by tree2string().
Indentation which used to be '|---' is now '|--- '. So, a tree which used to be printed as:
|---:default
| |---::=
| |---action
| |---=>
| |---[values]
Is now printed as:
|--- :default
| |--- ::=
| |--- action
| |--- =>
| |--- [values]
This makes the difference between node names ''/'-', '1'/'-1', etc, much clearer.
Apologies to anyone who runs tests which compare the output with pre-existing files.
EOT

[V 1.22]
Date=2014-02-13T13:14:00
Comments=- t/read.tree.t was still using File::Slurp :-(.

[V 1.21]
Date=2014-02-13T11:14:00
Comments=- Switch from File::Slurp to File::Slurp::Tiny, on the advice of Karen Etheridge. See RT#92976.

[V 1.20]
Date=2014-01-31T09:46:00
Comments= <<EOT
- After a private email from Paul Howarth (yea!) I see I need File::Temp V 0.19 because that's
the version which introduced the newdir() method, as used in the test suite. Sorry for the
churn.
EOT

[V 1.19]
Date=2014-01-30T09:24:00
Comments= <<EOT
- Set pre-req File::Temp version # to 0 (back from 0.2301). See D A Golden's blog entry:
http://www.dagolden.com/index.php/2293/why-installing-distzilla-is-slow-and-what-you-can-do-about-it/.
EOT

[V 1.18]
Date=2013-09-19T14:24:00
Comments= <<EOT
- No changes, code or otherwise, except for the version # in the *.pm, this file, and
Changelog.ini.
- Somehow a corrupted version got uploaded to search.cpan.org, so I've just changed the
version #. The file on MetaCPAN was fine.
- Thanx to Rob (Sisyphus) for reporting this.
EOT

[V 1.17]
Date=2013-09-16T15:24:00
Comments= <<EOT
- Write test temp files in :raw mode as well as utf-8, for MS Windows users.
- Take the opportunity to change all utf8 to utf-8, as per the docs for Encode,
except for 'use warnings qw(FATAL utf8);', which doesn't accept utf-8 :-(.
1.16 Mon Sep 9 09;26:00 2013
- Accept a patch (slightly modified by me) from Tom Molesworth (see RT#88501):
Remove 'use open qw(:std :utf8);' because of its global effect.
Replace Perl6::Slurp with File::Slurp, using the latter's binmode option for the encoding.
Fix docs where I'd erroneously said File::Slurp didn't support utf8.
EOT

[V 1.15]
Date=2013-09-06T11:10:00
Comments= <<EOT
- Replace Path::Tiny with File::Spec, because the former's list of dependencies is soooo long.
Changed files: t/read.tree.t, Build.PL and Makefile.PL.
See: RT#88435 for an explanation.
- Move t/pod.t to xt/author/pod.t.
EOT

[V 1.14]
Date=2013-09-04T13:44:00
Comments= <<EOT
- Document the copy() method.
- Patch the copy() method so it respects the {no_attribute_copy => 1} option.
- Add method read_tree(), for text files. It uses Perl6::Slurp (which supports utf8).
- Add methods read_attributes() and string2hashref($s) for use by read_tree().
- Add t/read.tree.t to test read_tree().
- Add t/tree.utf8.attrbiutes.txt, in utf8, for use by t/read.tree.t.
- Add t/tree.with.attributes.txt and t/tree.without.attributes.txt for use by t/read.tree.t.
- Make Perl V 5.8.1 a pre-req so we have access to the utf8 pragma.
EOT

[V 1.13]
Date=2013-08-12T17:16:00
Comments= <<EOT
- Change the values accepted for the no_attributes option from undef and 1 to 0 and 1.
If undef is used, it becomes 0, so pre-existing code will not change behaviour.
This makes it easier to pass 0 or 1 from the command line, since there is no default value
available.
EOT

[V 1.12]
Date=2013-07-03T16:38:00
Comments= <<EOT
- Change text in README referring to licence to match text in body of source, since it was in
conflict with the Artistic Licence V 2.0.
This was requested by Petr Pisar who packages stuff for Red Hat.
- Rename CHANGES to Changes as per CPAN::Changes::SPEC.
- Various spelling fixes in the docs, as kindly reported by dsteinbrunner.
EOT

[V 1.11]
Date=2013-02-04T09:50:00
Comments= <<EOT
- Correct the date (2012 -> 2013) in this file used for V 1.10.
- Correct the text at L<Tree::DAG_Node/AUTHOR> so it refers to Artistic License 2.0,
which now matches what it says in Build.PL and Makefile.PL. Resolves RT#83088.
EOT

[V 1.10]
Date=2013-02-01T08:53:00
Comments= <<EOT
- Change t/pod.t to look for Test::Pod 1.45, but comment out Test::Pod in Build.PL and
Makefile.PL. This means Test::Pod is not used at all if it is not installed.
As per RT#83077.
EOT

[V 1.09]
Date=2012-11-08T12:38:00
Comments= <<EOT
- No code changes.
- Oops. The changes in V 1.08 we made in the other 10 distros, but not in this one.
My apologies.
EOT

[V 1.08]
Date=2012-11-08T12:38:00
Comments= <<EOT
- No code changes.
- For pre-reqs such as strict, warnings, etc, which ship with Perl, set the version # to 0.
Reported as RT#80663 by Father Chrysostomos for Tree::DAG_Node.
EOT

[V 1.07]
Date=2012-11-01T12:47:00
Comments= <<EOT
- New maintainer: Ron Savage
- Pre-emptive apologies for any changes which are not back-compat. No such problems are
expected, but the introduction of new methods may disconcert some viewers.
- Fix RT#78858, reported by Gene Boggs. Audit code for similar problems.
- Fix RT#79506. reported by Ron Savage.
- Rename ChangeLog to CHANGES, and add Changelog.ini.
- Replace all uses of cyclicity_fault() and Carp::croak with die.
- Remove unused methods: decommission_root(), cyclicity_allowed(), cyclicity_fault(),
inaugurate_root(), no_cyclicity() and _update_links(). OK - cyclicity_fault() was called
once. It just died.
- Add methods: format_node(), hashref2string(), is_root(), node2string(), tree2string().
tree2string($opts, $node) - unlike draw_ascii_tree() - can optionally print the tree
starting at any node. Override format_node(), hashref2string(), and node2string() if
desired.
- Reformat the POD big-time.
- Add Build.PL.
- Re-write Makefile.PL.
- Remove use vars(@ISA $Debug $VERSION). Replace latter 2 with 'our ...'.
- Rename t/00_about_verbose.t to t/about.perl.t.
- Add scripts/cut.and.paste.subtrees.pl. Warning: Some trees get into an infinite loop.
- Add t/cut.and.paste.subtrees.t. Warning: Some trees get into an infinite loop.
- Document the options (discouraged by Sean) supported in the call to new($hashref).
EOT

[V 1.06]
Date=1998-12-02T12:00:00
Comments= <<EOT
- New maintainer: David Hand.
- No code changes.
EOT

[V 1.05]
Date=1998-12-29T12:00:00
Comments= <<EOT
- Just repackaging.
- No code changes.
EOT

[V 1.04]
Date=1998-02-23T12:00:00
Comments= <<EOT
- Bugfix: Olegt@dreamtime.net notes a bug in
depth_under that apparently always makes it return 0.
EOT

[V 1.03]
Date=1998-05-13T12:00:00
Comments= <<EOT
- Superficial changes:
Minor doc spiffing-up.
Noting my new email address.
- In order to keep its symbol table clean, DAG_Node no longer
imports routines from Carp and UNIVERSAL. Should have no effect on existing code.
- I went and commented out all the places where I have asserts for
non-cyclicity. I once had the idea that DAG_Node could be a base
class for graphs that /could/ allow cyclicity, or something like
that, so those assertions would apply for methods that work only
for acyclic networks. But, in time, I realized that almost
everything in DAG_Node would have to have such assertions. Moral
of the story: DAG_Node has nearly no code that it could share with
a class for anything but DAGs. And since DAG_Node does everything it
can to /keep/ you from making cyclicities, there's no point in
constantly having assertions of noncyclicity (especially when
these assertions are rather expensive to check).
EOT

[V 1.02]
Date=1998-03-05T12:00:00
Comments= <<EOT
- Minor bugfixes:
Fixed a typo in the docs: corrected one "right_sisters" to "right_sister"
Initialized a variable to '' to avoid warnings under -w. Thanks to Gilles Lamiral.
EOT

[V 1.01]
Date=1998-05-14T12:00:00
Comments= <<EOT
- Major additions:
Scads of new methods. Still (as far as I know) backward
compatible with all previous versions. Some minor changes in
coding, not affecting the interface.
- Hopefully more friendly to users that use -w (warnings).
- Cautionary tale: I started making big changes to this right around
mid-November 1998. But I kept thinking "oh, ONE MORE change and
then I'll release it." Famous last words! Other things came up,
I forgot what was new and what was different in this module
(which is why you don't see a detailed list of differences here),
altho apparently somehow I managed to document all the new methods.
EOT

[V 0.75]
Date=1998-11-03T12:00:00
Comments= <<EOT
- Minor changes:
New methods new_daughter, new_daughter_left.
$obj->new constructor syntax now documented.
Internal accesses to "daughter" and "mother" attribs are now direct, for efficiency's sake.
- Minor improvements to the docs.
EOT

[V 0.74]
Date=1998-10-28T12:00:00
Comments= <<EOT
- Whoops, forgot to bundle the README.
- No change in the code.
EOT

[V 0.73]
Date=1998-10-27T12:00:00
Comments=- First release.