Fix the handle_backticks issue

[Kyle-Ye]

• More runs in benchmark; .gitignore update
• Arena allocator
• Extensions API (https://github.com/jgm/cmark/pull/123)
• Strip extensions API down and separate from core
• Table extension from c068469 reworked
• Strikethrough extension from c068469 reworked
• Autolink extension
• Tagfilter extension
• Reduce maximum amount of backticks
• Get a clean build on MSVC (#5)
• table: trim cells, fix escaping, cleanup (#4)
• Initialise openers bottom correctly
• Fix for inline parser changes
• Abort if we fail to alloc chunk itself
• Add a no-crash test
• Add opaque_free_func to extensions
• Use opaque instead of user_data in table
• Rework email autolink as postprocessor
• Compile shared library for extensions
• Use extensions in spec test
• Only escape pipes in commonmark output when necessary
• Fix Windows build
• Preserve number of tildes in failed strikethru
• autolink simplification
• autolink_delim only works with ")", fix balance behaviour
• spec update
• Windows build fix (again)
• Support UTF-8 domains in autolinks
• Handle links in quotes correctly.
• Reference links in tables (#10)
• Handle UTF-8 BOM (#14)
• Add CMARK_OPT_GITHUB_PRE_LANG
• Use

• Fix empty table cell behaviour (#17)
• Limit arena
• Add Dockerfile
• Add -gfm suffix to artifacts
• README updates
• Correct manpages. Fixes #20.
• Simple tables (#21)
• Latest spec
• Skip disabled extensions
• roundtrip_tests reports results
• Add GFM version number
• Plaintext renderer (#25)
• Remove normalize as an option per #190 (#194)
• Remove dead/misleading code
• Add table alignment getters (#29)
• make install also installs extensions (#32)
• 0.27.1.gfm.1
• Add CMARK_GFM_VERSION define.
• Fix link order of cmark-gfm (#35)
• Add cmark_syntax_extension_get_private() (#36)
• Unmark as static
• Don't scan past an EOL (#37)
• Regenerate scanner
• Also exclude \n
• Update cmark-fuzz for cmark-gfm
• Latest cmake in Docker
• Fix a misaligned write
• 0.27.1.gfm.2
• Install ninja-build
• Avoid memcpy'ing NULL pointers (#38)
• Case-insensitive tagfilter. Fixes #42. (#43)
• Allocate memory from arena with correct alignment (#40)
• Use unsigned integer when shifting (#39)
• 0.27.1.gfm.3

• 32 nested balanced parens in a link is bananas (#48)

• 0.27.1.gfm.4
• Latest spec
• Fix typo (#52)
• test: Add test case for pathological collisions
• references: Fix pathological quadatric behavior
• Fix pathological test runner on Windows
• Add casts for MSVC10
• Update to latest spec
• Add the idempotent core_extensions_ensure_registered
• Inline sourcepos (#53)
• Remove unneeded TODO
• 0.28.0.gfm.5
• Sourcepos fixes (#54)
• 0.28.0.gfm.6
• Skip strikethroughs when considering emphasis (#55)
• 0.28.0.gfm.7
• Autolink should not cause : to be skipped
• 0.28.0.gfm.8
• Recursive chevrons are bananas (#49)
• 0.28.0.gfm.9
• blocks: Fix quadratic behavior in finalize
• 0.28.0.gfm.10
• No empty
• 0.28.0.gfm.11
• Period in email must precede alnum (#58)
• feature test macros in harness
• Fix install EXPORT target
• Shift includes around for proper header install (#63)
• add node.js wrapper (#46)
• Footnotes (#64)
• FOOTNOTE_REFERENCE has text content
• Footnote fix per kivikakk/comrak#44
• ASCII clean source
• Add -lcmark-gfmextensions to libcmark-gfm.pc.in
• Fix extensions with static only
• Build static on Windows again
• 0.28.3.gfm.12
• Add CMARK_OPT_STRIKETHROUGH_DOUBLE_TILDE. Closes #71.
• add CMARK_OPT_TABLE_PREFER_STYLE_ATTRIBUTES (#86)
• add tests for --table-prefer-style-attributes (#87)
• Remove square brackets when rendering HTML for footnotes (#90)
• Handle deeply nested lists (#95)
• Expose cmark_node_type CMARK_NODE_TABLE etc., make XCode happy with imported headers. (#96)
• Debian packaging (#97)
• Removed meta from list of block tags.
• Fix spaces on regression test.
• add regression test from comrak
• latest spec
• latest spec
• regressions.txt has non-specified strikethrough
• Add example of a Python wrapper which uses libcmark-gfmextensions. (#102)
• Parse rest of info string as meta (#103)
• 0.28.3.gfm.13
• add plaintext render func for strikethru
• 0.28.3.gfm.14
• commonmark writer: escape tilde (~). (#106)
• table extension: cosmetic fix for uniformity of output. (#105)
• commonmark writer/strikethrough: use two tildes for delimiters. (#104)
• Normalise header and define names (#109)
• 0.28.3.gfm.15
• ~ should not be escaped in href (#110)
• Footnotes in tables (#112)
• 0.28.3.gfm.16
• Allow extension to provide "opaque" alloc function (#89)
• XML attribute formatters (#116)
• Add support for tables and strike-through text in the XSLT (#117)
• 0.28.3.gfm.17
• Be more strict on matching strikethrough (#120)
• Remove /debian by suggestion in #122
• update travis-ci link
• fix image target
• Default to safe operation (#123)
• 0.28.3.gfm.18
• Prevent out-of-bound memory access. (#124)
• Limit the recursion in autolink extension. (#125)
• Add plaintext rendering for footnotes. Otherwise, it crashes in debug (#126)
• 0.28.3.gfm.19
• Add GFM extensions to fuzzing harness (#127)
• Fix a buffer overread in the CMark tables extension. (#128)
• don't crash on test failure on macos
• use pledge(2) (#132)
• check for OpenBSD 5.9+
• be more liberal in strikethru regression
• fix misplaced parenthesis
• add tasklist extension (#94)
• add changelog entry
• fix attribution
• 0.28.3.gfm.20
• Remove options mask from fuzzing harness (#129)
• remove the class here
• Adjustments to how the tasklist generation occurs (#136)
• Define _DEFAULT_SOURCE to get various posix/gnu glibc functions declared (#137)
• Add automatic configuration of compiler to get large file support (#138)
• Fix bug with determining if task is complete & adjust to spec. (#142)
• Add XML attribute to tasklist (#145)
• Specify parenthesis matching in autolink extension (#148)
• Fix valid domain ambiguity (#151)
• Fix extended email autolink ambiguity (#152)
• Fix table cannot be recoginsed without empty line (#154)
• Fix hard line break example (#155)
• correct _STATIC_DEFINE flag names
• import spec changes
• Change cmark_gfm_extensions_get_tasklist_state to cmark_gfm_extensions_tasklist_state_is_checked (#161)
• Make "set" methods public, add "set" method for tasklist (#162)
• Fixes Visual C++ 2019 compiler warnings for x64 targets (#166)
• Fix bug where tasklist extension was using union in two ways. (#169)
• Revert "import spec changes"
• Add link to Tcl bindings. (#171)
• Correct path to artifact (#173)
• Rebuild ext_scanners.c with latest re2c.
• [PATCH] Fix O(n*n) corner-case runtime in GFM's table extension.
• Add a test.
• Restore compatibility with other changes.
• Add Swift Package Manager Support
• Use pre-set config.h header
• Track opening backtick count for inline code spans
• apply block offsets for autolink source position info
• don't let blocks get end lines before their start lines
• Add inline directive syntax
• properly set image/link sourcepos when spanning multiple lines
• Add ^ to special chars array
• fixes existing data races
• add mutex initializer in new header
• add locks around arena ops
• tweak definitions of statics in inlines.c
• add locks around extensions registry ops
• make locking a compile-time setting
• add latch macros and use them for registering plugins
• fix deadlock in arena
• use pthread_once instead of atomics
• Add preserve-whitespace and inline-only options
• Allow all whitespace when preserving whitespace
• Don't emit an attribute node if it doesn't have parentheses
• update use of mutexes
• move global characters arrays into the parser
• free special char blocks alongside the parser
• don't reset the special-char blocks in parser_reset
• add comment about freeing special-chars memory
• save special_chars/skip_chars in parser_reset
• don't leak my_ext in the parser_interrupt test
• Add custom attributes using ^[foo][N] syntax
• Preserve leading newlines when CMARK_OPT_PRESERVE_WHITESPACE is set
• add cmark-gfm-bin target to Package.swift
• add .build/.swiftpm to gitignore
• add api_test to Package.swift
• fix warning in api_test
• add explicit modulemap for cmark-gfm
• add intention to take upstream changes
• Update README.md
• [Bugfix] Fix the backticks bug