commonmark/cmark 0.31.0

cmark 0.31.0

on GitHub

Update to 0.31.2 spec.txt.

Treat unicode Symbols like Punctuation, as per the 0.31 spec.

Add a new function to utf8.h:
int cmark_utf8proc_is_punctuation_or_symbol(int32_t uc).
The old cmark_utf8proc_is_punctuation has been kept for
now, but it is no longer used.

Add new exported function cmark_parser_new_with_mem_into_root
(API change) (John Ericson).

Avoid repeated language- in info string (commonmark/commonmark.js#277).

Fix quadratic behavior in S_insert_emph (Nick Wellnhofer).
Fixes part of GHSA-66g8-4hjf-77xh.

Fix quadratic behavior in check_open_blocks (Nick Wellnhofer).
Fixes part of GHSA-66g8-4hjf-77xh.

Track underscore bottom separately mod 3, like asterisk (Michael
Howell). This was already implemented correctly for asterisks,
but not for underscore.

Use fwrite instead of printf to print results in main (#523).
This avoids a massive slowdown in MSYS2.

commonmark writer: less aggressive escaping for ! (#131).

Update libFuzzer build (Nick Wellnhofer):

• Move fuzzing files into their own directory.
• Use libFuzzer the modern way by compiling and linking with
  -fsanitize=fuzzer(-no-link) without requiring LIB_FUZZER_PATH.
• Update the libFuzzer rule in Makefile and the README.md.

CMake build changes (Saleem Abdulrasool).

• Inline multiple variables in CMake, following CMake recommendations.
• Simplify the version computation.
• Remove the CMARK_STATIC and CMARK_SHARED options as one of the two
  must be enabled always as the cmark executable depends on the library.
  Instead of having a custom flag to discern between the
  library type, use the native CMake option BUILD_SHARED_LIBS,
  allowing the user to control which library to build. This matches
  CMake recommendations to only build a single copy of the library.
• Introduce an author warning for the use of CMARK_SHARED and
  CMARK_STATIC to redirect the author of the dependent package to
  BUILD_SHARED_LIBS.
• Permit incremental linking on Windows. Although incremental linking
  does introduce padding in the binary for incremental links, that
  should not matter for release mode builds in theory as /OPT:REF
  and /OPT:ICF will trigger full links, which is the default in
  release mode.
• Hoist the CMake module inclusion to the top level.
• Minor tweaks for speeding up the configure phase.
  Restructure the file layout to place the custom modules into the
  cmake/modules directory that is the common layout for CMake based
  projects.
• Squelch C4232 warnings on MSVC builds.
• Remove check for __builtin_expect. Use __has_builtin to check
  at compile time if the feature is supported.
  This macro is supported by both clang and GCC (as of 10).
  In the case that the compiler in use is not new enough, we still
  provide the fallback so that the code will compile but without the
  additional hints for the branch probability. config.h has been
  removed from the code base as it is no longer needed.
• Remove /TP usage on MSVC and replace CMARK_INLINE with inline.
  These were workarounds for pre-VS2015 compilers, which are no longer
  supported.
• Hoist the C visibility settings to top level
• Clean up C4267 warnings on MSVC builds.
• Remove some compiler compatibility checks that are no longer
  needed because VS 2013 is no longer supported (#498).
• Adjust the policy to silence warnings on MSVC builds
  CMake 3.15+ remove /W3 from the language flags under MSVC with
  CMP0092. Set the policy to new to avoid the D9025 warning.
• Reflow some text to match CMake documentation style
• Use generator expression for path computation.
• Use CMake to propagate CMARK_STATIC_DEFINE.
• Clean up an obsoleted variable (NFC).
• Hoist the policy settings. Policy settings may impact how
  project functions. They should be set immediately after
  cmake_minimum_required (which implicitly sets policies).
  Use the POLICY check to see if a policy is defined rather
  than using a version check.
• Replace CMARK_TESTS with CMake sanctioned BUILD_TESTING.
• Correct typo and adjust command invocation. Use the proper
  generator expression for the python interpreter and adjust
  a typo in the component name.
• Add an upgrade path for newer CMake.
  CMake 3.12 deprecated FindPythonInterp, and with CMake 3.27, were
  obsoleted with CMP0148. Add a version check and switch to the new
  behaviour to allow building with newer releases.

Fix regex syntax warnings in pathological_tests.py (Nick Wellnhofer).

test/cmark.py: avoid star imports (Jakub Wilk).

spec_tests.py: Add option to generate fuzz corpus (Nick Wellnhofer).
Add an option --fuzz-corpus that writes the test cases to separate
files including the options header, so they can be used as seed corpus
for fuzz testing.

Fix some cmark.3 man rendering issues so we can do a clean regen
(John Ericson).

Update Windows compilation instructions (Pomax, #525).