Re: Migration docutils 0.12 to 0.13

Hello,
I tried another workaround.
Instead of using a custom class, I overrided init_cutomizations method
using:

  class Inliner(BaseInliner):
    def __init(self):
      BaseInliner.__init__(self)

    def init_customizations(self, settings):
      BaseInliner.init_customizations(self, settings)

      issue_pattern = re.compile(u'''
        {start_string_prefix}
        TS-\d+
        {end_string_suffix}'''.format(
          start_string_prefix=self.start_string_prefix,
          end_string_suffix=self.end_string_suffix),
        re.VERBOSE | re.UNICODE)

      self.implicit_dispatch.append((issue_pattern, self.issue_reference))

I don't call explicitly init_customizations, but it's called: during
run, I still get the error:

  Exception occurred:
    File
"/usr/lib/python2.7/dist-packages/docutils/parsers/rst/states.py", line
530, in init_customizations
        """ % args, re.VERBOSE | re.UNICODE),
  KeyError: 'non_unescaped_whitespace_escape_before'
  The full traceback has been saved in /tmp/sphinx-err-wLtHoF.log, if
you want to report the issue to the developers.
  Please also report this if it was a user error, so that a better error
message can be provided next time.
  A bug report can be filed in the tracker at
<https://github.com/sphinx-doc/sphinx/issues>. Thanks!
  make[6]: *** [man] Error 1

What did I do wrong ?

Cheers,
Jean Baptiste Favre

On 01/01/2017 20:59, Guenter Milde wrote:
> On 2016-12-31, Jean Baptiste Favre wrote:
>> Hello,
>> I'm facing an issue with Trafficserver documentation [1] which doesn't
>> build with docutils 0.13.1
> 
>> Error comes from a custom Inliner class which is defined in doc/conf.py
>> of Trafficserver project(starting line 163).
>> This allow to transform text like "(TS-XXXX)" in a link to
>> trafficserver's Jira
> 
>> This custom Inliner used to work with docutils 0.12. It fails on 0.13.1
>> with following error:
> 
>>   Exception occurred:
>>     File "conf.py", line 185, in __init__
>>       start_string_prefix=self.start_string_prefix,
>>   AttributeError: Inliner instance has no attribute 'start_string_prefix'
> 
>> Since docutils 0.13, start_string_prefix isn't statically defined. We
>> have to call init_customiations for that.
> 
> Yes, this changed with the implementation of the long expected feature
> 
>   - Apply [ 103 ] Recognize inline markups without word boundaries.
> 
> and the new configuration setting "character_level_inline_markup".
> 
> 
>> First problem: one  must pass settings param when calling
>> init_customizations, but I can't find any format or structure for it.
> 
>> Second problem: I tried a workaround, creating a InlinerSettings class
>> with minimal properties so that init_customizations could pass:
> 
>>   class InlinerSettings:
>>     character_level_inline_markup=None
>>     pep_references=None
>>     rfc_references=None
> 
>> But, then, I faced another error:
> 
> ...
> 
> "settings" is a an object returned from the option parser (optparse module).
> 
> There are others facing similar problems, e.g. Python distutils. 
> There, I learned the trick is to use
> 
>   settings = frontend.OptionParser(components=(Parser,)).get_default_values()
>   
>   -- https://hg.python.org/cpython/rev/db09d760b965
> 
> 
>> Third problem: since the above tries didn't worked, I'd a look on custom
>> directives and roles.
>> But, it does not seems to be allowed to define a role with a custom regex.
>> This would means I have to rewrite all "(TS-XXXX)" expression into ":TS:
>> XXXX".
> 
> This is the "minimal-invasive" approach, it would be work now but might save
> issues later, as it depends less on Docutils internals.
> 
>> Is there any way to achieve the migration in a compatible way with
>> docutils 0.12 *and* without rewriting the docuemntation ?
> 
> If the above example does not lead to a solution, you could also consider to
> copy the definition of start_string_prefix ...
> from states.py (importing utils.punctuation_chars first)
> 
> Günter


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