The HTML parser has been completely replaced. The new HTML parser is built on Python's html.parser.HTMLParser, which alleviates various bugs and simplifies maintenance of the code. The md_in_html extension has been rebuilt on the new HTML Parser, which drastically simplifies it. Note that raw HTML elements with a markdown attribute defined are now converted to ElementTree Elements and are rendered by the serializer. Various bugs have been fixed. Link reference parsing, abbreviation reference parsing and footnote reference parsing has all been moved from preprocessors to blockprocessors, which allows them to be nested within other block level elements. Specifically, this change was necessary to maintain the current behavior in the rebuilt md_in_html extension. A few random edge-case bugs (see the included tests) were resolved in the process. Closes #595, closes #780, closes #830 and closes #1012.
* Python syntax upgraded using `pyupgrade --py3-plus` * Travis no longer uses `sudo`. See https://blog.travis-ci.com/2018-11-19-required-linux-infrastructure-migration See #760 for Python Version Support Timeline and related dicussion.
Allows users and/or extensions to alter the list of block level elements. The old implementation remains with a DeprecationWarning. Fixes #575.
Fixes #435.
Previously, instances of the Markdown class were represented as any one of 'md', 'md_instance', or 'markdown'. This inconsistency made it difficult when developing extensions, or just maintaining the existing code. Now, all instances are consistently represented as 'md'. The old attributes on class instances still exist, but raise a DeprecationWarning when accessed. Also on classes where the instance was optional, the attribute always exists now and is simply None if no instance was provided (previously the attribute wouldn't exist).
All processors and patterns now get "registered" to a Registry. Each item is given a name (string) and a priority. The name is for later reference and the priority can be either an integer or float and is used to sort. Priority is sorted from highest to lowest. A Registry instance is a list-like iterable with the items auto-sorted by priority. If two items have the same priority, then they are listed in the order there were "registered". Registering a new item with the same name as an already registered item replaces the old item with the new item (however, the new item is sorted by its newly assigned priority). To remove an item, "deregister" it by name or index. A backwards compatible shim is included so that existing simple extensions should continue to work. DeprecationWarnings will be raised for any code which calls the old API. Fixes #418.
Preserve the line which a reference was on to prevent raw HTML indexing issue. Fixes #584. Prevent raw HTML parsing issue in abbr and footnotes Peserve abbreviation line when stripping and preserve a line for each footnote block. Footnotes should also accumulate the extraneous padding. Test extra lines at the end of references Strip the gathered extraneous whitespace When processing footnotes, we don't actually care to process the extra whitespace at the end of a footnote, but we want it to calculate lines to preserve.
If both open and close was not found in first block, additional blocks were evaluated without context of previous blocks. The algorithm needs to evaluate a buffer with the left bracket present. So feed in all items and get the right bracket, then adjust the data_index to be relative to the last block. Fixes #452.