• Added commonmark renderer: cmark_render_commonmark. In addition to options, this takes a width parameter. A value of 0 disables wrapping; a positive value wraps the document to the specified width. Note that width is automatically set to 0 if the CMARK_OPT_HARDBREAKS option is set.
• The cmark executable now allows -t commonmark for output as CommonMark. A --width option has been added to specify wrapping width.
• Added roundtrip_test Makefile target. This runs all the spec through the commonmark renderer, and then through the commonmark parser, and compares normalized HTML to the test. All tests pass with the current parser and renderer, giving us some confidence that the commonmark renderer is sufficiently robust. Eventually this should be pythonized and put in the cmake test routine.
• Removed an unnecessary check in blocks.c. By the time we check for a list start, we've already checked for a horizontal rule, so we don't need to repeat that check here. Thanks to Robin Stocker for pointing out a similar redundancy in commonmark.js.
• Fixed bug in cmark_strbuf_unescape (buffer.c). The old function gave incorrect results on input like \\*, since the next backslash would be treated as escaping the * instead of being escaped itself.
• scanners.re: added _scan_scheme, scan_scheme, used in the commonmark renderer.
• Check for CMAKE_C_COMPILER (not CC_COMPILER) when setting C flags.
• Update code examples in documentation, adding new parser option argument, and using CMARK_OPT_DEFAULT (Nick Wellnhofer).
• Added options parameter to cmark_markdown_to_html.
• Removed obsolete reference to CMARK_NODE_LINK_LABEL.
• make leakcheck now checks all output formats.
• test/cmark.py: set default options for markdown_to_html.
• Warn about buggy re2c versions (Nick Wellnhofer).