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xml2rfc 2.4.5

Xml2rfc generates RFCs and IETF drafts from document source in XML according to the dtd in RFC2629.

Introduction

The IETF uses a specific format for the standards and other documents it publishes as RFCs, and for the draft documents which are produced when developing documents for publications. There exists a number of different tools to facilitate the formatting of drafts and RFCs according to the existing rules, and this tool, xml2rfc, is one of them. It takes as input an xml file which contains the text and meta-information about author names etc., and transforms it into suitably formatted output. The input xml file should follow the DTD given in RFC2629 (or it's inofficial successor).

The current incarnation of xml2rfc provides output in the following formats: Paginated and unpaginated ascii text, html, nroff, and expanded xml. Only the paginated text format is currently (January 2013) accepable as draft submissions to the IETF.

Installation

System Install

To install a system-wide version of xml2rfc, download and unpack the xml2rfc distribution package, then cd into the resulting package directory and run:

$ python setup.py install

Alternatively, if you have the 'pip' command ('Pip Installs Packages') installed, you can run pip to download and install the package:

$ pip install xml2rfc

User Install

If you want to perform a local installation for a specific user, you have a couple of options. You may use python's default location of user site-packages by specifying the flag --user. These locations are:

  • UNIX: $HOME/.local/lib/python<ver>/site-packages
  • OSX: $HOME/Library/Python/<ver>/lib/python/site-packages
  • Windows: %APPDATA%/Python/Python<ver>/site-packages

You can additionally combine the flag --install-scripts with --user to specify a directory on your PATH to install the xml2rfc executable to. For example, the following command:

$ python setup.py install --user --install-scripts=$HOME/bin

will install the xml2rfc library and data to your local site-packages directory, and an executable python script xml2rfc to $HOME/bin.

Custom Install

The option --prefix allows you to specify the base path for all installation files. The setup.py script will exit with an error if your PYTHONPATH is not correctly configured to contain the library path the script tries to install to.

The command is used as follows:

$ python setup.py install --prefix=<path>

For further fine-tuning of the installation behavior, you can get a list of all available options by running:

$ python setup.py install --help

Usage

xml2rfc accepts a single XML document as input and outputs to one or more conversion formats.

Basic Usage: xml2rfc SOURCE [options] FORMATS...

Options

The following parameters affect how xml2rfc behaves, however none are required.

Short Long Description
-h --help show the help message and exit
-v --verbose print extra information
-q --quiet dont print anything
-n --no-dtd disable DTD validation step
-c CACHE --cache=CACHE specify an alternate cache directory to write to
-d DTD --dtd=DTD specify an alternate dtd file
-b BASENAME --basename=BASENAME specify the base name for output files
-f FILENAME --filename=FILENAME specify an output filename
(none) --date=DATE run as if todays date is DATE (format: yyyy-mm-dd)
(none) --clear-cache purge the cache and exit
(none) --version display the version number and exit
Formats

At least one but as many as all of the following output formats must be specified. The destination file will be created according to the argument given to --filename. If no argument was given, it will create the file(s) "output.format". If no format is specified, xml2rfc will default to paginated text (--text).

Command Description
--raw outputs to a text file, unpaginated
--text outputs to a text file with proper page breaks
--nroff outputs to an nroff file
--html outputs to an html file
--exp outputs to an XML file with all references expanded
Examples
xml2rfc draft.xml
xml2rfc draft.xml --dtd=alt.dtd --basename=draft-1.0 --text --nroff --html

Dependencies

xml2rfc depends on the following packages:

Changelog

Version 2.4.5 (17 Jan 2014)

Another bugfix release, with a majority of the contributions from Jim Schaad.

  • If there is not an RFC number then XXXX is used for the RFC number for to internal:/rfc.number - matches v1 behavior. Fixes issue #114.
  • We now do a better (but not perfect) job of mking sure that section headings are not orphaned. If you have two section headings in a row then the first may still be orphaned. Fixes issue #166.
  • All known page breaking issues have been fixed. Closes issue #172.
  • Fixed a number of places where the code has to be made to work with both Python 2.7 unicode and string whitespace, and Python 3.3. whitespace strings, which are always unicode. Fixes issue #217.
  • Don't count formatting lines (which we can now tell) when computing break hints.
  • Catch any syntax errors raised while we're looking for an RFC number attribute on <rfc/>, so that we'll show all syntax errors found (during the next parse) instead of just one and one.
  • Added tests which generate .txt from .nroff and compares that to the xml2rfc-generated .txt (with some tweaks to handle different number of starting blanklines. Also corrected the number of initial blank lines output for RFCs in the raw text writer.
  • Not all files on Windows systems have a common root. This means that one cannot always get a relative path between to absolute path file names. Catch the error that occurs in these circumstances and just use the absolute path name.
  • Nested "format" style lists now include the level in the auto-generated counter value. Fixes issue #218.
  • EREFs are now put into the references section for text based output. Fixes issue #133.
  • cref elements are not dealt with when inline is either yes or no for text files. They are also now populated for html files as well. Fixes issue #201.

Version 2.4.4 (19 Dec 2013)

Another release with major contributions from Jim Schaad. This release primarily addresses page-breaking issues, but also improves the reporting of syntax errors (if any) in the xml input.

From Jim Schaad <ietf@augustcellars.com>:

  • We now do a better (but not perfect) job of mking sure that section headings are not orphaned. If you have two section headings in a row then the first may still be orphaned. Fixes issue #166.
  • Improved autobreaking, in a number of different places. Fixes issue #172.
  • In all examples in the test suite, the .txt and .nroff output now have the same page breaks.
  • Eliminated the line-breaking of 'Section N' in text-tables which was introduced in 2.4.4. Fixes ticket #217.
  • If there is not an RFC number then XXXX is used for the RFC number for to internal:/rfc.number - matches v1 behavior. Fixes issue #114.

From Henrik Levkowetz <henrik@levkowetz.com>:

  • Instead of previously only showing one single syntax error per invocation of xml2rfc, we're now showing all syntax errors found throughout the xml file at once.
  • Added tests which generate .txt from .nroff and compares that to the xml2rfc-generated .txt (with some tweaks to handle different number of starting blanklines. Also corrected the number of initial blank lines output for RFCs in the raw text writer.

Version 2.4.4 (11 Dec 2013)

This is a bugfix release, with code fixes almost entirely from Jim Schaad.

From Jim Schaad <ietf@augustcellars.com>:

  • Annotations now output more than just the first text field. It now expands all of the child elements as part of the output. Fixes issue #183.
  • If the authors string is zero length, then we do not emit the comma separating the authors and the title. Fixes issue #137.
  • Each street line is now tagged as class vcardline so it is emitted on a separate line. Fixes issue #153.
  • Fixed a problem with unreferenced references warnings being emitted twice if there were two references sections.
  • Fixed some list indentation problems. We now default to an indent of 3 for hanging lists which is the same thing that v1 did. We also use a value based on the bullet for format lists rather than using the 3 of a default hang indent - this also now matches v1 behavior.
  • Use width of bullet not default to 3*level+3
  • Fixed issue #147 - a hangingText without any text in the body now emits the hangingText. Fixes issue #117.
  • Set of fixes that deal with xref in documents.
  • Set of fixes that deal with references.
  • We now use the anchor rather than the generated bullet as the id of the reference element. Fixes issue #209.
  • The html did not have the same check for symrefs when sorting references that the text version did. Copy it over so they both only sort if symrefs is yes. Fixes issue #210 and
  • Anchors on t elements in a section were referencable, but no those in lists. They are now referencable. Fixes issue #149.
  • We now generate a warning when we get a target in an xref that we have not created an indexable reference for. This basically gives us an internal error check.
  • We now generate a warning when a reference is created that is not targeted by an xref in the document.
  • Fixed the centering algorithm so that the nroff and txt output files are more consistent.
  • Left shift artwork that is greater than 69 characters wide and steal space from the left margin. Fixes issue #129 & 194 which deal with how figures are laid out
  • Fixed issue #132 - if the artwork has an alignment - then it overrides the figure's version for the purpose of the artwork itself. Fixes issue #151.
  • Suppres-title kills the title decoration (i.e. Figure 1:) which matches v1 behavior. Fixes issue #213.
  • Convert all non-ASCII characters to entities when building the HTML body. We now are correct when we advertise it as being a us-ascii file.
  • Mixed two fixes back to the real source tree.
  • Rewrite of the basic low level code to use unicode strings in many places rather than convert the unicode characters into xml entity codes and try to use them. Doing so cleans up much of the line wrapping problems.
  • URLs, when tagged to be not wrapped, now use different Unicode markers on the slashes and hyphens so that they will preferentially break on slashes rather than hyphens when a URL is too long to fit into a single line of text.
  • Tracker issues addressed: #192, #167, #168, #193, #200, #122, #139
  • Increase the amount of text in the INSTALL document to deal with more information on how to install for windows. Fixes issue #184.
  • Don't emit the references section and TOC entry if there are no references to be emitted. Fixes issue #205.
  • Centering code did not take into account the .in X nroff command. Always use .in 0 for emission of raw text. Fixes issue #203.
  • The TCL code for deciding on table column widths has been moved into the new code. Fixes issue #173.
  • We now look for and do expansions for header cells just like normal cells. Fixes issue #131.
  • We now remove all entity references when doing an xml output
  • Fixed issue #146 - The code now allows for the assumption that the file name given is what it really is and then tries with the .xml appended if it is not found. Fixes issue #154.
  • Lots of errors added to tell about bad table layouts
  • allow make to run without pyflakes. Fixes issue #199.

From Henrik Levkowetz <henrik@levkowetz.com>:

  • Modified the code that saves page-break hints when building the unpaginated text so that it doesn't overwrite existing hints used for artwork and tables (which should not be broken across pages if at all possible) with hints that indicate regular text paragraphs (which may be broken except if that creates a widow or orphan). Fixes issue #179 by making the code do for artwork and tables what needLines used to do, without needing the manual needLines hint.

Version 2.4.3 (17 Nov 2013)

This release adds compatibility with Python 3.3; the test suite has been run for Python 2.6, 2.7 and 3.3 using the 'tox' tool.

This release also includes a large number of bugfixes, from people working at improving xml2rfc during the IETF-88 code sprint.

Details:

From Tony Hansen <tony@att.com>:

  • Eliminated spurious dots before author names on page 1. Fixes issue #189.
  • Fixed the style of nested letter-style lists. Fixes issue #127
  • Added a handling for empty <?rfc?> PIs within references. Fixes issue #181.
  • Removed trailing whitespace from reference title, organization. Fixes issue #171.
  • Added support v1 list formats %o, %x, and %X. Fixes issue #204.
  • Fixed a bad html selector which had a trailing '3'. Fixes issue #197.

From Jim Schaad <ietf@augustcellars>:

  • Removed leading zeros on dates. Fixes issue #206.
  • Fixed a crash when a new page had just been created, and it was totally empty. It is unknown if this can occur someplace other than for the last page, but it should have check in other locations to look for that. In addition we needed a change to figure out that we had already emitted a header for the page we are not going to use any longer and delete it. Fixes issue #187.
  • Handled the missing & to escape a period at the beginning of a line. If we do a raw emission (i.e. inside of a figure) then we need to go back over the lines we just put into the buffer and check to see if any of them have leading periods and quote them. Fixes issue #191.
  • Removed extraneous .ce 0 and blank lines in the nroff. Since it was using the paging formatter in the process of building the nroff output, it kept all of the blank lines at the end of each page and emitted them. There is no check in the nroff page_break function which removes any empty lines at the end of the array prior to emitting the ".bp" directive (or not emitting it if it is the last thing in the file. Fixes issue #180.
  • Now correctly picks up the day if a day is provided and uses the current day for a draft if the month and year are current. We now allow for both the full name of the month and the abbreviated name of the month to be used, however there may be some interesting questions to look at if November is not in the current locale. Fixes issue #195.
  • Fixed the text-list-symbols PI to work at all levels. The list should inherit style from the nearest parent that has one. Fixes issue #126.

From Elwyn Davies <elwynd@dial.pipex.com>:

  • Don't emit '%' before 'Section' for xrefs in the nroff writer. Fixes issue #169.

From Henrik Levkowetz <henrik@levkowetz.com>:

  • Modified the iref index output to use consistent sorting for items and subitems.
  • Removed the restriction to python 2.x from setup.py
  • Ported xml2rfc to python 3.3 while maintaining compatibility with 2.6 and 2.7.
  • Added support for tox testing covering python versions 2.6, 2.7 and 3.3

Version 2.4.2 (26 May 2013)

This release fixes all major and critical issues registered in the issue tracker as of 26 May 2013. Details:

  • Applied a patch from ht@inf.ed.ac.uk to sort references (when PI sortrefs==yes), and added code to insert a link target if the reference has a 'target' attribute. Fixes issue #175.
  • Added pre-installation requirements to the INSTALL file. Added code to scripts/xml2rfc in order to avoid problems if that file is renamed to scripts/xml2rfc.py. This fixes issue #152.
  • Added a setup requirement for python <3.0, as things don't currently work if trying to run setup.py or xml2rfc with python 3.X.
  • Added special cases to avoid adding double spaces after many common abbreviations. Refined the sentence-end double-space fixup further, to look at whether what follows looks like the start of a new sentence. This fixes issue #115.
  • Moved the get_initials() function to the BaseRfcWriter, as it now needs to look at a PI. Added code to return one initial only, or multiple, depending on the PI 'multiple-initials' setting. Fixes issue #138 (for now). It is possible that this resolution is too simpleminded, and a cleaner way is needed to differentiate the handling of initials in the current document versus initials in references.
  • Added new undocumented PI multiple-initials to control whether multiple initials will be shown for an author, or not. The default is 'no', matching the xml2rfc v1.x behaviour.
  • Fixed the code which determines when an author affiliation doesn't need to be listed again in the front page author list, and removes the redundant affiliation (the old code would remove the first matching organization, rather than the immediately preceeding organization name). Also fixed a buggy test of when an organization element is present. Fixes issue #135.
  • Made appearance of 'Authors Address' (etc.) in ToC dependent on PI 'rfcedstyle' == 'yes'. Fixes issue #125.
  • Updated write_text() to handle long bullets that need to be wrapped across lines better. Fixes issue #124.
  • Fixed two other cases of missing blank lines when PI 'compact' is 'no'. Fixes issue #82 (some more).
  • Disabled the iprnotified IP. See issue #123; closes #123.
  • When protecting http: URLs from line-breaking in nroff output, place the % outside enclosing parentheses, if any. Fixes issue #120.
  • Added a warning for incomplete and out-of-date <date/> elements. Fixed an issue with changeset [792].
  • Issue a warning when the source file isn't for an RFC, but doesn't have a docName attribute in the <rfc/> element.
  • Fixed the use of separating lines in table drawing, to match v1 for text and nroff output. (There is no specification for the meaining of the different styles though...). Fixes issue #113. Note that additional style definitions are needed to get the correct results for the html output.
  • Refactored and re-wrote the paginated text writer and the nroff writer in order to generate a ToC in nroff by re-using the fairly complex post-rendering code which inserts the ToC (and iref entries) in the paginated text writer. As a side effect, the page-breaking calculations for the nroff writer becomes the same as for the paginated writer. Re-factored the line and page-break emitting code to be cleaner and more readable. Changed the code to not start inserting a ToC too close to the end of a page (currently hardcoded to require at least 10 lines), otherwise skip to a new page. Fixes issue #109.
  • Changed the author list in first-page header to show a blank line if no organization has been given. Fixes issue #108.
  • Changed the wrapping of nroff output to match text output closely, in order to minimize insertion of .bp in the middle of a line. Fixes issue #150 (mostly -- line breaks on hyphens may still cause .bp to be emitted in the middle of a line in very rare cases).
  • Changed nroff output for long titles (which will wrap) so that the wrapped title text will be indented appropriately. Fixes issue #128.
  • Changed the handling of special characters (nbsp, nbhy) so as to emit the proper non-breaking escapes for nroff. Fixes issue #121.
  • Changed start-of-line nroff escape handling, see issue #118.
  • Changed the generation of xref text to use the same numeric indexes as in the references section when symrefs='no'. Don't start numbering over again when starting a new references section (i.e., when moving from normative to informative). Don't re-sort numeric references alphabetically; they are already sorted numerically. Fixes issue #107.
  • Changed os.linesep to '<NL>' when writing lines to text files. The library takes care of doing the right thing on different platforms; writing os.linesep on the other hand will result in the file containing '<CR><CR><NL>', which is wrong. Fixes issue #141.
  • Changed handling of include PIs to replace the PI instead of just appending the included tree. Updated a test file to match updated test case. Fixes issue #136.

Version 2.4.1 (13 Feb 2013)

  • Fixed a problem with very long hangindent bullet text followed by <vspace/>, which could make xml2rfc abort with a traceback for certain inputs.
  • Fixed a mismatched argument count for string formatting which could make xml2rfc abort with a traceback for certain inputs.

Version 2.4.0 (27 Jan 2013)

With this release, all issues against the 2.x series of xml2rfc has been resolved. Without doubt there will be new issues in the issue tracker, but the current clean slate is nice to have.

For full details on all tickets, there's always the issue tracker: http://trac.tools.ietf.org/tools/xml2rfc/trac/report/

An extract from the commit log is available below:

  • In some cases, the error messages when validating an xml document are correct, but too obscure. If a required element is absent, the error message could say for instance 'Element references content does not follow the DTD, expecting (reference)+, got ', which is correct -- the DTD validator got nothing, when it required something, so it says 'got ', with nothing after 'got'. But for a regular user, we now add on 'nothing.' to make things clearer. Fixes issue #102.
  • It seems there could be a bug in separate invocation of lxml.etree.DTD.validate(tree) after parsing, compared to doing parsing with dtd_validation=True. The former fails in a case when it shouldn't, while the latter succeeds in validating a valid document. Declaring validation as successful if the dtd.error_log is empty, even if validation returned False. This resolves issue #103.
  • Factored out the code which gets an author's initials from the xml author element, and made the get_initials() utility function return initials fixed up with trailing spaces, if missing. The current code does not mangle initials by removing any initials but the first one. Fixes issue #63, closes issue #10.
  • Added code to avoid breaking URLs in boilerplate across lines. Fixes issue #78.
  • Added PI defaults for 'figurecount' and 'tablecount' (not listed in the xml2rfc readme...) Also removed coupling between explicitly set rfcedstyle, compact, and subcompact settings, to follow v1 practice.
  • Refactored the PI defaults to appear all in the same place, rather than spread out throughout the code.
  • Updated draw_table to insert blank rows when PI compact is 'no'. Fixes issue #82.
  • Added tests and special handling for the case when a hanging type list has less space left on the first line, after the bullet, than what's needed for the first following word. In that case, start the list text on the following line. Fixes issue #85.
  • Modified the page-breaking code to better keep section titles together with the section text, and keep figure preamble, figure, postamble and caption together. Updated tests. Fixes issue #100.
  • Added handling of tocdepth to the html writer. Fixes issue #101.
  • Modified how the --base switch to the xml2rfc script works, to make it easier to generate multiple output formats and place them all in the same target directory. Also changed the default extensions for two output formats (.raw.txt and .exp.xml).
  • Tweaked the html template to not permit crazy wide pages.
  • Rewrote parts of the parsing in order to get hold of the number attribute of the <rfc/> tag before the full parsing is done, in order to be able to later resolve the &rfc.number; entity (which, based on how convoluted it is to get that right, I'd like to deprecate.) Fixes issue #86.
  • Numerous small fixes to indentation and wrapping of references. Avoid wrapping URLs in references if possible. Avoid wrapping 'Section 3.14.' if possible. Indent more like xml2rfc v1.
  • Added reduction of doublespaces in regular text, except when they might be at the end of a sentence. Xml2rfc v1 would do this, v2 didn't till now.
  • Generalized the _format_counter() method to consistently handle list counter field-widths internally, and made it adjust the field-width to the max counter width based on the list length and counter type. Fixes an v1 to -v2 incompatibility for numbered lists with 10 items or more, and other similar cases.
  • Added generic base conversion code, and used that to generate list letters which will work for lists with more than 26 items.
  • Reworked code to render roman numerals in lists, to place whitespace correctly in justification field. Fixes issue #94.
  • Added consensus vs. no-consensus options for IAB RFCs' Status of This Memo section. Fixes issue #88.
  • Made <t/> elements with an anchor attribute generate html with an <a name='...'/> elemnt, for linking. Closes issue #67.
  • Applied boilerplate URL-splitting prevention only in the raw writer where later do paragraph line-wrapping, instead of generically. Fixes issue #62.
  • Now permitting all versions of lxml >= 2.2.8, but notice that there may be missing build dependencies for lxml 3.x which may cause installation of lxml to fail. (That's an lxml issue, rather than an xml2rfc issue, though...) This fixes issue #99.

Version 2.3.11.3 (18 Jan 2013)

  • Tweaked the install_required setting in setup.py to not pull down lxml 3.x (as it's not been tested with xml2rfc) and bumped the version.

Version 2.3.11 (18 Jan 2013)

This release fixes all outstanding major bugs, details below. The issue tracker is at http://tools.ietf.org/tools/xml2rfc/trac/.

  • Updated the nroff writer to do backslash escaping on source text, to avoid escaping nroff control characters. Fixes issue #77.
  • Added a modified xref writer to the nroff output writer, in order to handle xref targets which should not be broken across lines. This, together with changeset [688], fixes issue #80.
  • Added text to the section test case to trigger the second part of issue #79. It turns out that the changes in [688] fixed this, too; this closes issue #79.
  • Tweaked the nroff generation to not break on hyphens, in order to avoid hyphenated words ending up with embedded spaces: 'pre-processing' becoming 'pre- processing' if 'pre-' occurred at the end of an nroff text line. Also tweaked the line-width used in line-breaking to have matching line-breaks between .txt and .nroff output (with exception for lines ending in hyphens).
  • Tweaked roman number list counter to output roman numbers in a field 5 spaces wide, instead of having varied widths. This is different from version 1, so may have to be reverted, depending on how people react.
  • Added a warning for too long lines in figures and tables. No outdenting for now; I'd like to consult some about that. Fixes issue #76.
  • Updated tests showing that all list format specifiers mentioned in issue #70 now works. Closes isssue #70.
  • Changed spanx emphasis back to _this_ instead of -this-, matching the v1 behaviour. Addresses issue #70.
  • Make <vspace/> in a hangindent list reset the indentation to the hang-indent, even if the bullet text is longer than the hang-indent. Addresses issue #70.
  • Refined the page-breaking to not insert an extra page break for artwork that won't fit on a page anyway.
  • Refined the page-breaking to avoid breaking artwork and tables across pages, if possible.
  • Fixed a problem with centering of titles and labels. Fixes issue #73.
  • Changed the leading and trailing whitespace lines of a page to better match legacy output. Fixed the autobreaking algorithm to correctly avoid orphans and widows; fixes issue #72. Removed an extra blank line at the top of the page following an early page break to avoid orphan or widow.
  • Tweaked the generation of ToC dot-lines and page numbers to better match legacy xml2rfc. Fixed a bug in the generation of xref text where trailing whitespace could cause double spaces. Tweaked the output format to produce the correct number of leading blank lines on the first page of a document.
  • Modified the handling of figure titles, so that given titles will be written also without anchor or figure counting. Fixes issue #75.
  • Tweaked the html writer to have a buffer interface that provides a self.buf similar to the other writers, for test purposes.
  • Reworked the WriterElementTest suite to test all the output formats, not only paginated text.
  • Added a note about /usr/local/bin permissions. This closes issue #65.
  • Added files describing possible install methods (INSTALL), and possible build commands (Makefile).
  • The syntax that was used to specify the version of the lxml dependency ('>=') is not supported in python distutil setup.py files, and caused setup to try to find an lxml version greater than =2.2.8, which couldn't succeed. Fixed to say '>2.2.7' instead. This was probably the cause of always reinstalling lxml even when it was present.
  • Updated README.rst to cover the new --date option, and tweaked it a bit.
  • Added some files to provide an enhanced source distribution package.
  • Updated setup.py with maintainer and licence information.

Version 2.3.10 (03 Jan 2013)

  • Changed the output text for Internet-Draft references to omit the series name, but add (work in progress). Updated the test case to match draft revision number.
  • Updated all the rfc editor boilerplate in valid test facits to match the correct outcome (which is also what the code actually produces).
  • Changed the diff test error message so that the valid text is output as the original, not as the changed text of a diff.
  • Corrected test cases to match correct expiry using 185 days instead of 183 days from document date.
  • Added missing attributes to the XmlRfcError Exception subclass, necessary in order to make it resemble lxml's error class and provide consistent error messages to the user whether they come from lxml or our own code.
  • Added a licence file, indicating the licencing used by the IETF for the xml2rfc code.
  • Fixed up the xml2rfc cli script to provide better help texts by telling the option parser the appropriate option variable names.
  • Fixed up the help text formatting by explicitly providing an appropriate help text formatter to the option parser.
  • Added an option (--date=DATE)to provide the document date on the command line.
  • Added an option (--no-dtd) to disable the DTD validation step.
  • Added code to catch additional exceptions and provide appropriate user information, instead of an exception traceback.
 
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