spaces in tag names breaks build with difficult error message

[mikemccracken]

I am importing an octopress blog (which was imported from wordpress, imported from etc etc), and the tags are not uniform.

I had two posts with tags "open source" and "open-source", and attempting to build gives this message:
ERROR: Task generation 'render_site' has duplicated definition of 'render_tags:output/categories/open-source.xml'

It really took some guessing to figure out that the tags were clashing somehow.

[Kwpolska]

This should have been fixed in a more recent version than the v6.2.1 you were using — as stated on Twitter… But it wasn’t:

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/doit/doit_cmd.py", line 103, in run
    return self.sub_cmds[command].parse_execute(args)
  File "/usr/lib/python2.7/site-packages/doit/cmd_base.py", line 60, in parse_execute
    return self.execute(params, args)
  File "/usr/lib/python2.7/site-packages/doit/cmd_base.py", line 226, in execute
    args)
  File "/usr/lib/python2.7/site-packages/nikola/__main__.py", line 220, in load_tasks
    self.nikola.gen_tasks('render_site', "Task", 'Group of tasks to render the site.'))
  File "/usr/lib/python2.7/site-packages/doit/loader.py", line 250, in generate_tasks
    for task_dict, x_doc in flat_generator(gen_result, gen_doc):
  File "/usr/lib/python2.7/site-packages/doit/loader.py", line 22, in flat_generator
    for item in gen:
  File "/usr/lib/python2.7/site-packages/nikola/nikola.py", line 1104, in gen_tasks
    for task in flatten(pluginInfo.plugin_object.gen_tasks()):
  File "/usr/lib/python2.7/site-packages/nikola/nikola.py", line 1098, in flatten
    for t in task:
  File "/usr/lib/python2.7/site-packages/nikola/plugins/task/posts.py", line 49, in gen_tasks
    self.site.scan_posts()
  File "/usr/lib/python2.7/site-packages/nikola/nikola.py", line 1205, in scan_posts
    other_tag = [k for k in self.posts_per_tag.keys() if k.lower() == tag.lower()][0]
IndexError: list index out of range

[mikemccracken]

Nice, thanks!