Empty comments are created

[mbollmann]

Originally reported by: fab-bar (Bitbucket: fab-bar, GitHub: fab-bar)

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CorA somehow introduced empty comments of the following kind into the text:

#!xml
  <comment type=""></comment>

In the affected documents this seems to appear always and only after token-level comments. However, I was not able to replicate the creation of such empty comments. Maybe it was an old version of CorA that introduced these?

Here is a short example:

Imported version:

#!xml
<token id="t13" trans="aver">
        <dipl id="d14" trans="aver" utf="aver"/>
        <mod id="t13_m1" trans="aver" ascii="aver" utf="aver"></mod>
</token>
<token id="t14" trans="mochte">
        <dipl id="d15" trans="mochte" utf="mochte"/>
        <mod id="t14_m1" trans="mochte" ascii="mochte" utf="mochte"></mod>
</token>

Exported after annotation:

#!xml
  <token id="t12" trans="aver">
    <dipl id="t12_d1" trans="aver" utf="aver"/>
    <mod id="t12_m1" trans="aver" utf="aver" ascii="aver" checked="y">
      <pos tag="AVKO"/>
      <lemma tag="&#x14D;ver4]"/>
      <comment tag="Kleinwort vermutlich noch korrigieren!"/>
    </mod>
  </token>
  <comment type=""></comment>
  <token id="t13" trans="mochte">
    <dipl id="t13_d1" trans="mochte" utf="mochte"/>
    <mod id="t13_m1" trans="mochte" utf="mochte" ascii="mochte" checked="y">
      <pos tag="VMFIN.Prpr.3.Sg.Past.*"/>
      <lemma tag="m&#x22B;gen"/>
    </mod>
  </token>

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• Bitbucket: https://bitbucket.org/mbollmann/cora/issue/74

[mbollmann]

Original comment by Marcel Bollmann (Bitbucket: mbollmann, GitHub: mbollmann):

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Results in invalid XML, which is problematic since we're using validation now. See #87 for reproducing.

[mbollmann]

Original comment by Marcel Bollmann (Bitbucket: mbollmann, GitHub: mbollmann):

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Issue #87 was marked as a duplicate of this issue.