title: Legacy EM Extension

Legacy EM


The Legacy EM extension restores Markdown's original behavior for emphasis and strong syntax when using underscores.

By default Python-Markdown treats _connected_words_ intelligently by recognizing that mid-word underscores should not be used for emphasis. In other words, by default, that input would result in this output: <em>connected_words</em>.

However, that behavior is not consistent with the original rules or the behavior of the reference implementation. Therefore, this extension can be used to better match the reference implementation. With the extension enabled, the above input would result in this output: <em>connected</em>words_.


See Extensions for general extension usage. Use legacy_em as the name of the extension.

This extension does not accept any special configuration options.

A trivial example:

markdown.markdown(some_text, extensions=['legacy_em'])