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开发
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I did find the right place to look into this!

with a min_post_length set to 1 symbols would still fail because of this

in lib\text_sentinel.rb

  def symbols_regex
    /[\ -\/\[-\`\:-\@\{-\~]/m
  end

  def seems_pronounceable?
    # At least some non-symbol characters
    # (We don't have a comprehensive list of symbols, but this will eliminate some noise)
    @text.gsub(symbols_regex, '').size > 0
  end

Which honestly is right. However for my case this caused problems. It was not hard to write a small plugin to basically allow symbols to count towards the size check.