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The `NOT_STRONG_RE` regex matchs 1, 2, or 3 * or _ which are surrounded by
white space to prevent them from being parsed as tokens. However, the
surrounding white space should not be consumed by the regex, which is why
lookhead and lookbehind assertions are used. As `^` cannot be matched in a
lookbehind assertion, it is left outside the assertion, but as it is zero
length, that should not matter.
Tests added and/or updated to cover various edge cases. Fixes #1300.
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We already disallow right square brackets. This also disallows left
square brackets, which ensures link references will be less likely
to collide with standard links in some weird edge cases. Fixes #1209.
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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.
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Fixes #894.
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Resolves issue that can occur with complex emphasis combinations.
Fixes #979
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* 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.
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Remove misleading escaped_chars_in_js test
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
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All whitespace characters should be treated the same by inline patterns.
Previoulsy, emphasis patterns were only accounting for spaces, but not
other whitepsace characters such as newlines. Fixes #783.
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Previously only newlines preceded by whitespace were collapsed. Fixes #742.
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Fixes #712.
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Serializer should only escape & in attributes if not part of &
Better regex avoid Unicode and `_` in amp detection.
In general, we don't want to escape already escaped content, but with code content, we want literal representations of escaped content, so have code content explicitly escape its content before placing in AtomicStrings.
Closes #669.
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Fixes #435.
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Add new InlineProcessor class that handles inline processing much better and allows for more flexibility. This adds new InlineProcessors that no longer utilize unnecessary pretext and posttext captures. New class can accept the buffer that is being worked on and manually process the text without regex and return new replacement bounds. This helps us to handle links in a better way and handle nested brackets and logic that is too much for regular expression. The refactor also allows image links to have links/paths with spaces like links. Ref #551, #613, #590, #161.
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