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changelog.txt
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[0.31.0]
* 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).
[0.30.3]
* Fix quadratic complexity bug with repeated `![[]()`.
Resolves CVE-2023-22486. Add new pathological test. (John MacFarlane)
* Allow declarations with no space, as per spec (#456, John MacFarlane).
* Set `enumi*` counter correctly in LaTeX output (#451, John MacFarlane).
* Allow `<!DOCTYPE` to be case-insensitive. (This conforms to the
existing spec.) (John MacFarlane)
* Fixed HTML comment scanning. Need to handle this case: `<!--> and -->`.
Since the scanner finds the longest match, we had to
move some of the logic outside of the scanner. (John MacFarlane)
* Fix quadratic parsing issue with repeated `<!--` (this was not
introduced by the previous fix, and not in a released version of cmark).
Resolves CVE-2023-22484. Add new pathological test. (John MacFarlane)
* Update HTML comment scanner to accord with commonmark/commonmark-spec#713
(John MacFarlane).
* Pathological tests: half the number of repetitions, and the timeout.
This reduces the time needed for the pathological tests.
(John MacFarlane)
* Shrink `struct cmark_node` (#446). The `internal_offset` member is
only used for headings and can be moved to `struct cmark_heading`.
This reduces the size of `struct cmark_node` from 112 to 104 bytes on
64-bit systems. (Nick Wellnhofer)
* Add `-Wstrict-prototypes` and fix offending functions. (Nick
Wellnhofer, Dan Cîrnaț)
* Fix quadratic behavior involving `get_containing_block` (#431).
Instead of searching for the containing block, update the tight list
status when entering a child of a list item or exiting a list.
(Nick Wellnhofer)
* Fix `pathological_tests.py` (Nick Wellnhofer):
- Use a multiprocessing.Queue to actually get results from spawned
tests processes.
- Fix the `allowed_failures` test.
- Truncate actual output when printed.
- Prepare for testing pathological behavior of the Commonmark renderer.
* Fix source position bug with backticks (kyle).
[0.30.2]
* Fix parsing of emphasis before links (#424, Nick Wellnhofer).
Fixes a regression introduced with commit ed0a4bf.
* Update to Unicode 14.0 (data-man).
* Add `~` to safe href character set (#394, frogtile).
* Update CMakeLists.txt (Saleem Abdulrasool). Bump the minimum required
CMake to 3.7. Imperatively define output name for static library.
* Fix install paths in libcmark.pc (Sebastián Mancilla).
`CMAKE_INSTALL_<dir>` can be relative or absolute path, so it is wrong to
prefix CMAKE_INSTALL_PREFIX because if CMAKE_INSTALL_<dir> is set to an
absolute path it will result in a malformed path with two absolute paths
joined together. Instead, use `CMAKE_INSTALL_FULL_<dir>` from
GNUInstallDirs.
[0.30.1]
* Properly indent block-level contents of list items in man (#258).
This handles nested lists as well as items with multiple paragraphs.
The change requires addition of a new field block_number_in_list_item
to cmark_renderer, but this does not change the public API.
* Fix quadratic behavior when parsing emphasis (#389, Nick
Wellnhofer). Delimiters can be deleted, so store delimiter positions
instead of pointers in `openers_bottom`. Besides causing undefined
behavior when reading a dangling pointer, this could also result
in quadratic behavior when parsing emphasis.
* Fix quadratic behavior when parsing smart quotes (#388, Nick Wellnhofer).
Remove matching smart quote delimiters. Otherwise, the same opener
could be found over and over, preventing the `openers_bottom`
optimization from kicking in and leading to quadratic behavior when
processing lots of quotes.
* Modify CMake configuration so that the project can be built with
older versions of CMake (#384, Saleem Abdulrasool). (In 0.30.0,
some features were used that require CMake >= 3.3.) The cost of this
backwards compatibility is that developers must now explicitly invoke
`cmark_add_compile_options` when a new compilation target is added.
* Remove a comma at the end of an enumerator list, which was flagged
by clang as a C++11 extension.
* make_man_page.py: use absolute path with CDLL. This avoids the error
"file system relative paths not allowed in hardened programs."
* Include cmark version in cmark(3) man page (instead of LOCAL).
[0.30.0]
* Use official 0.30 spec.txt.
* Add `cmark_get_default_mem_allocator()` (#330). API change: this
adds a new exported function in cmark.h.
* Fix #383. An optimization we used for emphasis parsing was
too aggressive, causing us to miss some emphasis that was legal
according to the spec. We fix this by indexing the `openers_bottom`
table not just by the type of delimiter and the length of the
closing delimiter mod 3, but by whether the closing delimiter
can also be an opener. (The algorithm for determining emphasis
matching depends on all these factors.) Add regression test.
* Fix quadratic behavior with inline HTML (#299, Nick Wellnhofer).
Repeated starting sequences like `<?`, `<!DECL ` or `<![CDATA[` could
lead to quadratic behavior if no matching ending sequence was found.
Separate the inline HTML scanners. Remember if scanning the whole input
for a specific ending sequence failed and skip subsequent scans.
* Speed up hierarchy check in tree manipulation API (Nick Wellnhofer).
Skip hierarchy check in the common case that the inserted child has
no children.
* Fix quadratic behavior when parsing inlines (#373, Nick Wellnhofer).
The inline parsing code would call `cmark_node_append_child` to append
nodes. This public function has a sanity check which is linear in the
depth of the tree. Repeated calls could show quadratic behavior in
degenerate trees. Use a special function to append nodes without this
check. (Issue found by OSS-Fuzz.)
* Replace invalid characters in XML output (#365, Nick wellnhofer).
Control characters, U+FFFE and U+FFFF aren't allowed in XML 1.0, so
replace them with U+FFFD (replacement character). This doesn't solve
the problem how to roundtrip these characters, but at least we don't
produce invalid XML.
* Avoid quadratic output growth with reference links (#354, Nick Wellnhofer).
Keep track of the number bytes added through expansion of reference
links and limit the total to the size of the input document. Always
allow a minimum of 100KB. Unfortunately, cmark has no error handling,
so all we can do is to stop expanding reference links without returning
an error. This should never be an issue in practice though. The 100KB
minimum alone should cover all real-world cases.
* Fix issue with type-7 HTML blocks interrupting paragraphs
(see commonmark/commonmark.js#213).
* Treat `textarea` like `script`, `style`, `pre` (type 1 HTML block),
in accordance with spec change.
* Define whitespace per spec (Asherah Conor).
* Add `MAX_INDENT` for xml (#355). Otherwise we can get quadratic
increase in size with deeply nested structures.
* Fix handling of empty strings when creating XML/HTML output
(Steffen Kieß).
* Commonmark renderer: always use fences for code (#317).
This solves problems with adjacent code blocks being merged.
* Improve rendering of commonmark code spans with spaces (#316).
* Cleaner approach to max digits for numeric entities.
This modifies unescaping in `houdini_html_u.c` rather than
the entity handling in `inlines.c`. Unlike the other,
this approach works also in e.g. link titles.
* Fix entity parser (and api test) to respect length limit on
numeric entities.
* Don't allow link destinations with unbalanced unescaped parentheses.
See commonmark/commonmark.js#177.
* `print_usage()`: Minor grammar fix, swap two words (#305, Øyvind A. Holm).
* Don't call `memcpy` with `NULL` as first parameter.
This is illegal according to the C standard, sec. 7.1.4.
See <https://www.imperialviolet.org/2016/06/26/nonnull.html>.
* Add needed include in `blocks.c`.
* Fix unnecessary variable assignment.
* Skip UTF-8 BOM if present at beginning of buffer (#334).
* Fix URL check in `is_autolink` (Nick Wellnhofer). In a recent commit,
the check was changed to `strcmp`, but we really have to use `strncmp`.
* Fix null pointer deref in `is_autolink` (Nick Wellnhofer).
Introduced by a recent commit. Found by OSS-Fuzz.
* Rearrange struct cmark_node (Nick Wellnhofer). Introduce multi-purpose
data/len members in struct cmark_node. This is mainly used to store
literal text for inlines, code and HTML blocks.
Move the content strbuf for blocks from `cmark_node` to `cmark_parser`.
When finalizing nodes that allow inlines (paragraphs and headings),
detach the strbuf and store the block content in the node's data/len
members. Free the block content after processing inlines.
Reduces size of struct `cmark_node` by 8 bytes.
* Improve packing of `struct cmark_list` (Nick Wellnhofer).
* Use C string instead of chunk in a number of contexts (Nick Wellnhofer,
#309). The node struct never references memory of other nodes now.
Node accessors don't have to check for delayed creation of C strings,
so parsing and iterating all literals using the public API should
actually be faster than before. These changes also reduce the size
of `struct cmark_node`.
* Add casts for MSVC10 (from kivikakk in cmark-cfm).
* commonmark renderer: better escaping in smart mode. When
`CMARK_OPT_SMART` is enabled, we escape literal `-`, `.`, and quote
characters when needed to avoid their being "smartified."
* Add options field to `cmark_renderer`.
* commonmark.c - use `size_t` instead of `int`.
* Include `string.h` in `cmark-fuzz.c`.
* Fix #220 (hash collisions for references) (Vicent Marti via cmark-gfm).
Reimplemented reference storage as follows:
1. New references are always inserted at the end of a linked list. This
is an O(1) operation, and does not check whether an existing (duplicate)
reference with the same label already exists in the document.
2. Upon the first call to `cmark_reference_lookup` (when it is expected
that no further references will be added to the reference map), the
linked list of references is written into a fixed-size array.
3. The fixed size array can then be efficiently sorted in-place in O(n
log n). This operation only happens once. We perform this sort in a
_stable_ manner to ensure that the earliest link reference in the
document always has preference, as the spec dictates. To accomplish
this, every reference is tagged with a generation number when initially
inserted in the linked list.
4. The sorted array is then compacted in O(n). Since it was sorted in a
stable way, the first reference for each label is preserved and the
duplicates are removed, matching the spec.
5. We can now simply perform a binary search for the current
`cmark_reference_lookup` query in O(log n). Any further lookup calls
will also be O(log n), since the sorted references table only needs to
be generated once.
The resulting implementation is notably simple (as it uses standard
library builtins `qsort` and `bsearch`), whilst performing better than
the fixed size hash table in documents that have a high number of
references and never becoming pathological regardless of the input.
* Comment out unused function `cmark_strbuf_cstr` in `buffer.h`.
* Re-add `--safe` command-line option as a no-op (#344), for backwards
compatibility.
* Update to Unicode 13.0
* Generate and install cmake-config file (Reinhold Gschweicher).
Add full cmake support. The project can either be used with
`add_subdirectory` or be installed into the system (or some other
directory) and be found with `find_package(cmark)`. In both cases the
cmake target `cmark::cmark` and/or `cmark::cmark_static` is all that
is needed to be linked. Previously the `cmarkConfig.cmake` file
was generated, but not installed. As additional bonus of generation
by cmake we get a generated `cmake-config-version.cmake` file for
`find_package()` to search for the same major version.
The generated config file is position independent, allowing the
installed directory to be copied or moved and still work.
The following four files are generated and installed:
`lib/cmake/cmark/cmark-config.cmake`,
`lib/cmake/cmark/cmark-config-version.cmake`,
`lib/cmake/cmark/cmark-targets.cmake`,
`lib/cmake/cmark/cmark-targets-release.cmake`.
* Adjust the MinGW paths for MinGW64 (Daniil Baturin).
* Fix CMake generator expression checking for MSVC (Nick Wellnhofer).
* Fix `-Wconst-qual` warning (Saleem Abdulrasool). This enables building
with `/Zc:strictString` with MSVC as well.
* Improve and modernize cmake build (Saleem Abdulrasool).
+ Build: add exports targets for build tree usage (#307).
+ Uuse target properties for include paths.
+ Remove the unnecessary execute permission on CMakeLists.txt.
+ Reduce property computation in CMake.
+ Use `CMAKE_INCLUDE_CURRENT_DIRECTORY`.
+ Improve man page installation.
+ Only include `GNUInstallDirs` once.
+ Replace `add_compile_definitions` with `add_compile_options`
since the former was introduced in 3.12 (#321).
+ Cleanup CMake (#319).
+ Inline a variable.
+ Use `LINKER_LANGUAGE` property for C++ runtime.
+ Use CMake to control C standard.
+ Use the correct variable.
+ Loosen the compiler check
+ Hoist shared flags to top-level CMakeLists
+ Remove duplicated flags.
+ Use `add_compile_options` rather than modify `CMAKE_C_FLAGS`.
+ Hoist sanitizer flags to global state.
+ Hoist `-fvisibilty` flags to top-level.
+ Hoist the debug flag handling.
+ Hoist the profile flag handling.
+ Remove incorrect variable handling.
+ Remove unused CMake includes.
* Remove "-rdynamic" flag for static builds (#300, Eric Pruitt).
* Fixed installation on other than Ubuntu GNU/Linux distributions
(Vitaly Zaitsev).
* Link executable with static or shared library (Nick Wellnhofer).
If `CMARK_STATIC` is on (default), link the executable with the static
library. This produces exactly the same result as compiling the library
sources again and linking with the object files.
If `CMARK_STATIC` is off, link the executable with the shared library.
This wasn't supported before and should be the preferred way to
package cmark on Linux distros.
Building only a shared library and a statically linked executable
isn't supported anymore but this doesn't seem useful.
* Reintroduce version check for MSVC /TP flag (Nick Wellnhofer).
The flag is only required for old MSVC versions.
* normalize.py: use `html.escape` instead of `cgi.escape` (#313).
* Fix pathological_tests.py on Windows (Nick Wellnhofer).
When using multiprocessing on Windows, the main program must be
guarded with a `__name__` check.
* Remove useless `__name__` check in test scripts (Nick Wellnhofer).
* Add CIFuzz (Leo Neat).
* cmark.1 - Document --unsafe instead of --safe (#332).
* cmark.1: remove docs for `--normalize` which no longer exists (#332).
* Add lint target to Makefile.
* Add uninstall target to Makefile.
* Update benchmarks (#338).
* Fix typo in documentation (Tim Gates).
* Increase timeout for pathological tests to avoid CI failure.
* Update the Racket wrapper with the safe -> unsafe flag change (Eli
Barzilay).
[0.29.0]
* Update spec to 0.29.
* Make rendering safe by default (#239, #273).
Adds `CMARK_OPT_UNSAFE` and make `CMARK_OPT_SAFE` a no-op (for API
compatibility). The new default behavior is to suppress raw HTML and
potentially dangerous links. The `CMARK_OPT_UNSAFE` option has to be set
explicitly to prevent this.
**NOTE:** This change will require modifications in bindings for cmark
and in most libraries and programs that use cmark.
Borrows heavily from @kivikakk's patch in github/cmark-gfm#123.
* Add sourcepos info for inlines (Yuki Izumi).
* Disallow more than 32 nested balanced parens in a link (Yuki Izumi).
* Resolve link references before creating setext header.
A setext header line after a link reference should not
create a header, according to the spec.
* commonmark renderer: improve escaping.
URL-escape special characters when escape mode is URL, and not otherwise.
Entity-escape control characters (< 0x20) in non-literal escape modes.
* render: only emit actual newline when escape mode is LITERAL.
For markdown content, e.g., in other contexts we want some
kind of escaping, not a literal newline.
* Update code span normalization to conform with spec change.
* Allow empty `<>` link destination in reference link.
* Remove leftover includes of `memory.h` (#290).
* A link destination can't start with `<` unless it is
an angle-bracket link that also ends with `>` (#289).
(If your URL really starts with `<`, URL-escape it.)
* Allow internal delimiter runs to match if both have lengths that are
multiples of 3. See commonmark/commonmark#528.
* Include `references.h` in `parser.h` (#287).
* Fix `[link](<foo\>)`.
* Use hand-rolled scanner for thematic break (see #284).
Keep track of the last position where a thematic break
failed to match on a line, to avoid rescanning unnecessarily.
* Rename `ends_with_blank_line` with `S_` prefix.
* Add `CMARK_NODE__LAST_LINE_CHECKED` flag (#284).
Use this to avoid unnecessary recursion in `ends_with_blank_line`.
* In `ends_with_blank_line`, call `S_set_last_line_blank`
to avoid unnecessary repetition (#284). Once we settle whether a list
item ends in a blank line, we don't need to revisit this in considering
parent list items.
* Disallow unescaped `(` in parenthesized link title.
* Copy line/col info straight from opener/closer (Ashe Connor).
We can't rely on anything in `subj` since it's been modified while parsing
the subject and could represent line info from a future line. This is
simple and works.
* `render.c`: reset `last_breakable` after cr. Fixes jgm/pandoc#5033.
* Fix a typo in `houdini_href_e.c` (Felix Yan).
* commonmark writer: use `~~~` fences if info string contains backtick.
This is needed for round-trip tests.
* Update scanners for new info string rules.
* Add XSLT stylesheet to convert cmark XML back to Commonmark
(Nick Wellnhofer, #264). Initial version of an XSLT stylesheet that
converts the XML format produced by `cmark -t xml` back to Commonmark.
* Check for whitespace before reference title (#263).
* Bump CMake to version 3 (Jonathan Müller).
* Build: Remove deprecated call to `add_compiler_export_flags()`
(Jonathan Müller). It is deprecated in CMake 3.0, the replacement is to
set the `CXX_VISIBILITY_PRESET` (or in our case `C_VISIBILITY_PRESET`) and
`VISIBILITY_INLINES_HIDDEN` properties of the target. We're already
setting them by setting the CMake variables anyway, so the call can be
removed.
* Build: only attempt to install MSVC system libraries on Windows
(Saleem Abdulrasool). Newer versions of CMake attempt to query the system
for information about the VS 2017 installation. Unfortunately, this query
fails on non-Windows systems when cross-compiling:
`cmake_host_system_information does not recognize <key> VS_15_DIR`.
CMake will not find these system libraries on non-Windows hosts anyways,
and we were silencing the warnings, so simply omit the installation when
cross-compiling to Windows.
* Simplify code normalization, in line with spec change.
* Implement code span spec changes. These affect both parsing and writing
commonmark.
* Add link parsing corner cases to regressions (Ashe Connor).
* Add `xml:space="preserve"` in XML output when appropriate
(Nguyễn Thái Ngọc Duy).
(For text, code, code_block, html_inline and html_block tags.)
* Removed meta from list of block tags. Added regression test.
See commonmark/CommonMark#527.
* `entity_tests.py` - omit noisy success output.
* `pathological_tests.py`: make tests run faster.
Commented out the (already ignored) "many references" test, which
times out. Reduced the iterations for a couple other tests.
* `pathological_tests.py`: added test for deeply nested lists.
* Optimize `S_find_first_nonspace`. We were needlessly redoing things we'd
already done. Now we skip the work if the first nonspace is greater than
the current offset. This fixes pathological slowdown with deeply nested
lists (#255). For N = 3000, the time goes from over 17s to about 0.7s.
Thanks to Martin Mitas for diagnosing the problem.
* Allow spaces in link destination delimited with pointy brackets.
* Adjust max length of decimal/numeric entities.
See commonmark/CommonMark#487.
* Fix inline raw HTML parsing.
This fixes a recently added failing spec test case. Previously spaces
were being allowed in unquoted attribute values; no we forbid them.
* Don't allow list markers to be indented >= 4 spaces.
See commonmark/CommonMark#497.
* Check for empty buffer when rendering (Phil Turnbull).
For empty documents, `->size` is zero so
`renderer.buffer->ptr[renderer.buffer->size - 1]` will cause an
out-of-bounds read. Empty buffers always point to the global
`cmark_strbuf__initbuf` buffer so we read `cmark_strbuf__initbuf[-1]`.
* Also run API tests with `CMARK_SHARED=OFF` (Nick Wellnhofer).
* Rename roundtrip and entity tests (Nick Wellnhofer).
Rename the tests to reflect that they use the library, not the
executable.
* Generate export header for static-only build (#247, Nick Wellnhofer).
* Fuzz width parameter too (Phil Turnbull). Allow the `width` parameter to
be generated too so we get better fuzz-coverage.
* Don't discard empty fuzz test-cases (Phil Turnbull). We currently discard
fuzz test-cases that are empty but empty inputs are valid markdown. This
improves the fuzzing coverage slightly.
* Fixed exit code for pathological tests.
* Add allowed failures to `pathological_tests.py`.
This allows us to include tests that we don't yet know how to pass.
* Add timeout to `pathological_tests.py`.
Tests must complete in 8 seconds or are errors.
* Add more pathological tests (Martin Mitas).
These tests target the issues #214, #218, #220.
* Use pledge(2) on OpenBSD (Ashe Connor).
* Update the Racket wrapper (Eli Barzilay).
* Makefile: For afl target, don't build tests.
[0.28.3]
* Include GNUInstallDirs in src/CMakeLists.txt (Nick Wellnhofer, #240).
This fixes build problems on some cmake versions (#241).
[0.28.2]
* Fixed regression in install dest for static library (#238).
Due to a mistake, 0.28.1 installed libcmark.a into include/.
[0.28.1]
* `--smart`: open quote can never occur right after `]` or `)` (#227).
* Fix quadratic behavior in `finalize` (Vicent Marti).
* Don't use `CMAKE_INSTALL_LIBDIR` to create `libcmark.pc` (#236).
This wasn't getting set in processing `libcmark.pc.in`, and we
were getting the wrong entry in `libcmark.pc`.
The new approach sets an internal `libdir` variable to
`lib${LIB_SUFFIX}`. This variable is used both to set the
install destination and in the libcmark.pc.in template.
* Update README.md, replace `make astyle` with `make format`
(Nguyễn Thái Ngọc Duy).
[0.28.0]
* Update spec.
* Use unsigned integer when shifting (Phil Turnbull).
Avoids a UBSAN warning which can be triggered when handling a
long sequence of backticks.
* Avoid memcpy'ing NULL pointers (Phil Turnbull).
Avoids a UBSAN warning when link title is empty string.
The length of the memcpy is zero so the NULL pointer is not
dereferenced but it is still undefined behaviour.
* DeMorgan simplification of some tests in emphasis parser.
This also brings the code into closer alignment with the wording
of the spec (see jgm/CommonMark#467).
* Fixed undefined shift in commonmark writer (#211).
Found by google/oss-fuzz:
<https://oss-fuzz.com/v2/testcase-detail/4686992824598528>.
* latex writer: fix memory overflow (#210).
We got an array overflow in enumerated lists nested more than
10 deep with start number =/= 1.
This commit also ensures that we don't try to set `enum_` counters
that aren't defined by LaTeX (generally up to enumv).
Found by google/oss-fuzz:
<https://oss-fuzz.com/v2/testcase-detail/5546760854306816>.
* Check for NULL pointer in get_link_type (Phil Turnbull).
`echo '[](xx:)' | ./build/src/cmark -t latex` gave a
segfault.
* Move fuzzing dictionary into single file (Phil Turnbull).
This allows AFL and libFuzzer to use the same dictionary
* Reset bytes after UTF8 proc (Yuki Izumi, #206).
* Don't scan past an EOL (Yuki Izumi).
The existing negated character classes (`[^…]`) are careful to
always include` \x00` in the characters excluded, but these `.`
catch-alls can scan right past the terminating NUL placed
at the end of the buffer by `_scan_at`. As such, buffer
overruns can occur. Also, don't scan past a newline in HTML
block end scanners.
* Document cases where `get_` functions return `NULL` (#155).
E.g. `cmark_node_get_url` on a non-link or image.
* Properly handle backslashes in link destinations (#192).
Only ascii punctuation characters are escapable, per the spec.
* Fixed `cmark_node_get_list_start` to return 0 for bullet lists,
as documented (#202).
* Use `CMARK_NO_DELIM` for bullet lists (#201).
* Fixed code for freeing delimiter stack (#189).
* Removed abort outside of conditional (typo).
* Removed coercion in error message when aborting from buffer.
* Print message to stderr when we abort due to memory demands (#188).
* `libcmark.pc`: use `CMAKE_INSTALL_LIBDIR` (#185, Jens Petersen).
Needed for multilib distros like Fedora.
* Fixed buffer overflow error in `S_parser_feed` (#184).
The overflow could occur in the following condition:
the buffer ends with `\r` and the next memory address
contains `\n`.
* Update emphasis parsing for spec change.
Strong now goes inside Emph rather than the reverse,
when both scopes are possible. The code is much simpler.
This also avoids a spec inconsistency that cmark had previously:
`***hi***` became Strong (Emph "hi")) but
`***hi****` became Emph (Strong "hi")) "*"
* Fixes for the LaTeX renderer (#182, Doeme)
+ Don't double-output the link in latex-rendering.
+ Prevent ligatures in dashes sensibly when rendering latex.
`\-` is a hyphenation, so it doesn't get displayed at all.
* Added a test for NULL when freeing `subj->last_delim`.
* Cleaned up setting of lower bounds for openers.
We now use a much smaller array.
* Fix #178, quadratic parsing bug. Add pathological test.
* Slight improvement of clarity of logic in emph matching.
* Fix "multiple of 3" determination in emph/strong parsing.
We need to store the length of the original delimiter run,
instead of using the length of the remaining delimiters
after some have been subtracted. Test case:
`a***b* c*`. Thanks to Raph Levin for reporting.
* Correctly initialize chunk in S_process_line (Nick Wellnhofer, #170).
The `alloc` member wasn't initialized. This also allows to add an
assertion in `chunk_rtrim` which doesn't work for alloced chunks.
* Added 'make newbench'.
* `scanners.c` generated with re2c 0.16 (68K smaller!).
* `scanners.re` - fixed warnings; use `*` for fallback.
* Fixed some warnings in `scanners.re`.
* Update CaseFolding to latest (Kevin Wojniak, #168).
* Allow balanced nested parens in link destinations (Yuki Izumi, #166)
* Allocate enough bytes for backticks array.
* Inlines: Ensure that the delimiter stack is freed in subject.
* Fixed pathological cases with backtick code spans:
- Removed recursion in scan_to_closing_backticks
- Added an array of pointers to potential backtick closers
to subject
- This array is used to avoid traversing the subject again
when we've already seen all the potential backtick closers.
- Added a max bound of 1000 for backtick code span delimiters.
- This helps with pathological cases like:
x
x `
x ``
x ```
x ````
...
- Added pathological test case.
Thanks to Martin Mitáš for identifying the problem and for
discussion of solutions.
* Remove redundant cmake_minimum_required (#163, @kainjow).
* Make shared and static libraries optional (Azamat H. Hackimov).
Now you can enable/disable compilation and installation targets for
shared and static libraries via `-DCMARK_SHARED=ON/OFF` and
`-DCMARK_STATIC=ON/OFF`.
* Added support for built-in `${LIB_SUFFIX}` feature (Azamat H.
Hackimov). Replaced `${LIB_INSTALL_DIR}` option with built-in
`${LIB_SUFFIX}` for installing for 32/64-bit systems. Normally,
CMake will set `${LIB_SUFFIX}` automatically for required enviroment.
If you have any issues with it, you can override this option with
`-DLIB_SUFFIX=64` or `-DLIB_SUFFIX=""` during configuration.
* Add Makefile target and harness to fuzz with libFuzzer (Phil Turnbull).
This can be run locally with `make libFuzzer` but the harness will be
integrated into oss-fuzz for large-scale fuzzing.
* Advertise `--validate-utf8` in usage information
(Nguyễn Thái Ngọc Duy).
* Makefile: use warnings with re2c.
* README: Add link to Python wrapper, prettify languages list
(Pavlo Kapyshin).
* README: Add link to cmark-scala (Tim Nieradzik, #196)
[0.27.1]
* Set policy for CMP0063 to avoid a warning (#162).
Put set_policy under cmake version test.
Otherwise we get errors in older versions of cmake.
* Use VERSION_GREATER to clean up cmake version test.
* Improve afl target. Use afl-clang by default. Set default for path.
[0.27.0]
* Update spec to 0.27.
* Fix warnings building with MSVC on Windows (#165, Hugh Bellamy).
* Fix `CMAKE_C_VISIBILITY_PRESET` for cmake versions greater than 1.8
(e.g. 3.6.2) (#162, Hugh Bellamy). This lets us build swift-cmark
on Windows, using clang-cl.
* Fix for non-matching entities (#161, Yuki Izumi).
* Modified `print_delimiters` (commented out) so it compiles again.
* `make format`: don't change order of includes.
* Changed logic for null/eol checks (#160).
+ only check once for "not at end of line"
+ check for null before we check for newline characters (the
previous patch would fail for NULL + CR)
* Fix by not advancing past both `\0` and `\n` (Yuki Izumi).
* Add test for NUL-LF sequence (Yuki Izumi).
* Fix memory leak in list parsing (Yuki Izumi).
* Use `cmark_mem` to free where used to alloc (Yuki Izumi).
* Allow a shortcut link before a `(` (jgm/CommonMark#427).
* Allow tabs after setext header line (jgm/commonmark.js#109).
* Don't let URI schemes start with spaces.
* Fixed h2..h6 HTML blocks (jgm/CommonMark#430). Added regression test.
* Autolink scheme can contain digits (Gábor Csárdi).
* Fix nullary function declarations in cmark.h (Nick Wellnhofer).
Fixes strict prototypes warnings.
* COPYING: Update file name and remove duplicate section and
(Peter Eisentraut).
* Fix typo (Pavlo Kapyshin).
[0.26.1]
* Removed unnecessary typedef that caused build failure on
some platforms.
* Use `$(MAKE)` in Makefile instead of hardcoded `make` (#146,
Tobias Kortkamp).
[0.26.0]
* Implement spec changes for list items:
- Empty list items cannot interrupt paragraphs.
- Ordered lists cannot interrupt paragraphs unless
they start with 1.
- Removed "two blank lines break out of a list" feature.
* Fix sourcepos for blockquotes (#142).
* Fix sourcepos for atx headers (#141).
* Fix ATX headers and thematic breaks to allow tabs as well as spaces.
* Fix `chunk_set_cstr` with suffix of current string (#139,
Nick Wellnhofer). It's possible that `cmark_chunk_set_cstr` is called
with a substring (suffix) of the current string. Delay freeing of the
chunk content to handle this case correctly.
* Export targets on installation (Jonathan Müller).
This allows using them in other cmake projects.
* Fix cmake warning about CMP0048 (Jonathan Müller).
* commonmark renderer: Ensure we don't have a blank line
before a code block when it's the first thing in a list
item.
* Change parsing of strong/emph in response to spec changes.
`process_emphasis` now gets better results in corner cases.
The change is this: when considering matches between an interior
delimiter run (one that can open and can close) and another delimiter
run, we require that the sum of the lengths of the two delimiter
runs mod 3 is not 0.
* Ported Robin Stocker's changes to link parsing in jgm/commonmark#101.
This uses a separate stack for brackets, instead of putting them on the
delimiter stack. This avoids the need for looking through the delimiter
stack for the next bracket.
* `cmark_reference_lookup`: Return NULL if reference is null string.
* Fix character type detection in `commonmark.c` (Nick Wellnhofer).
Fixes test failures on Windows and undefined behavior.
- Implement `cmark_isalpha`.
- Check for ASCII character before implicit cast to char.
- Use internal ctype functions in `commonmark.c`.
* Better documentation of memory-freeing responsibilities.
in `cmark.h` and its man page (#124).
* Use library functions to insert nodes in emphasis/link processing.
Previously we did this manually, which introduces many
places where errors can creep in.
* Correctly handle list marker followed only by spaces.
Previously when a list marker was followed only by spaces,
cmark expected the following content to be indented by
the same number of spaces. But in this case we should
treat the line just like a blank line and set list padding
accordingly.
* Fixed a number of issues relating to line wrapping.
- Extend `CMARK_OPT_NOBREAKS` to all renderers and add `--nobreaks`.
- Do not autowrap, regardless of width parameter, if
`CMARK_OPT_NOBREAKS` is set.
- Fixed `CMARK_OPT_HARDBREAKS` for LaTeX and man renderers.
- Ensure that no auto-wrapping occurs if
`CMARK_OPT_NOBREAKS` is enabled, or if output is CommonMark and
`CMARK_OPT_HARDBREAKS` is enabled.
* Set stdin to binary mode on Windows (Nick Wellnhofer, #113).
This fixes EOLs when reading from stdin.
* Add library option to render softbreaks as spaces (Pavlo
Kapyshin). Note that the `NOBREAKS` option is HTML-only
* renderer: `no_linebreaks` instead of `no_wrap`.
We generally want this option to prohibit any breaking
in things like headers (not just wraps, but softbreaks).
* Coerce `realurllen` to `int`. This is an alternate solution for pull
request #132, which introduced a new warning on the comparison
(Benedict Cohen).
* Remove unused variable `link_text` (Mathiew Duponchelle).
* Improved safety checks in buffer (Vicent Marti).
* Add new interface allowing specification of custom memory allocator
for nodes (Vicent Marti). Added `cmark_node_new_with_mem`,
`cmark_parser_new_with_mem`, `cmark_mem` to API.
* Reduce storage size for nodes by using bit flags instead of
separate booleans (Vicent Marti).
* config: Add `SSIZE_T` compat for Win32 (Vicent Marti).
* cmake: Global handler for OOM situations (Vicent Marti).
* Add tests for memory exhaustion (Vicent Marti).
* Document in man page and public header that one should use the same
memory allocator for every node in a tree.
* Fix ctypes in Python FFI calls (Nick Wellnhofer). This didn't cause
problems so far because all types are 32-bit on 32-bit systems and
arguments are passed in registers on x86-64. The wrong types could cause
crashes on other platforms, though.
* Remove spurious failures in roundtrip tests. In the commonmark writer we
separate lists, and lists and indented code, using a dummy HTML comment.
So in evaluating the round-trip tests, we now strip out
these comments. We also normalize HTML to avoid issues
having to do with line breaks.
* Add 2016 to copyright (Kevin Burke).
* Added `to_commonmark` in `test/cmark.py` (for round-trip tests).
* `spec_test.py` - parameterize `do_test` with converter.
* `spec_tests.py`: exit code is now sum of failures and errors.
This ensures that a failing exit code will be given when
there are errors, not just with failures.
* Fixed round trip tests. Previously they actually ran
`cmark` instead of the round-trip version, since there was a bug in
setting the ROUNDTRIP variable (#131).
* Added new `roundtrip_tests.py`. This replaces the old use of simple shell
scripts. It is much faster, and more flexible. (We will be able
to do custom normalization and skip certain tests.)
* Fix tests under MinGW (Nick Wellnhofer).
* Fix leak in `api_test` (Mathieu Duponchelle).
* Makefile: have leakcheck stop on first error instead of going through
all the formats and options and probably getting the same output.
* Add regression tests (Nick Wellnhofer).
[0.25.2]
* Open files in binary mode (#113, Nick Wellnhofer). Now that cmark
supports different line endings, files must be openend in binary mode
on Windows.
* Reset `partially_consumed_tab` on every new line (#114, Nick Wellnhofer).
* Handle buffer split across a CRLF line ending (#117). Adds an internal
field to the parser struct to keep track of `last_buffer_ended_with_cr`.
Added test.
[0.25.1]
* Release with no code changes. cmark version was mistakenly set to
0.25.1 in the 0.25.0 release (#112), so this release just
ensures that this will cause no confusion later.
[0.25.0]
* Fixed tabs in indentation (#101). This patch fixes S_advance_offset
so that it doesn't gobble a tab character when advancing less than the
width of a tab.
* Added partially_consumed_tab to parser. This keeps track of when we
have gotten partway through a tab when consuming initial indentation.
* Simplified add_line (only need parser parameter).
* Properly handle partially consumed tab. E.g. in
- foo
<TAB><TAB>bar
we should consume two spaces from the second tab, including two spaces
in the code block.
* Properly handle tabs with blockquotes and fenced blocks.
* Fixed handling of tabs in lists.
* Clarified logic in S_advance_offset.
* Use an assertion to check for in-range html_block_type.
It's a programming error if the type is out of range.
* Refactored S_processLines to make the logic easier to
understand, and added documentation (Mathieu Duponchelle).
* Removed unnecessary check for empty string_content.
* Factored out contains_inlines.
* Moved the cmake minimum version to top line of CMakeLists.txt
(tinysun212).
* Fix ctype(3) usage on NetBSD (Kamil Rytarowski). We need to cast value
passed to isspace(3) to unsigned char to explicitly prevent possibly
undefined behavior.
* Compile in plain C mode with MSVC 12.0 or newer (Nick Wellnhofer).
Under MSVC, we used to compile in C++ mode to get some C99 features
like mixing declarations and code. With newer MSVC versions, it's
possible to build in plain C mode.
* Switched from "inline" to "CMARK_INLINE" (Nick Wellnhofer).
Newer MSVC versions support enough of C99 to be able to compile cmark
in plain C mode. Only the "inline" keyword is still unsupported.
We have to use "__inline" instead.
* Added include guards to config.h
* config.h.in - added compatibility snprintf, vsnprintf for MSVC.
* Replaced sprintf with snprintf (Marco Benelli).
* config.h: include stdio.h for _vscprintf etc.
* Include starg.h when needed in config.h.
* Removed an unnecessary C99-ism in buffer.c. This helps compiling on
systems like luarocks that don't have all the cmake configuration
goodness (thanks to carlmartus).
* Don't use variable length arrays (Nick Wellnhofer).
They're not supported by MSVC.
* Test with multiple MSVC versions under Appveyor (Nick Wellnhofer).
* Fix installation dir of man-pages on NetBSD (Kamil Rytarowski).
* Fixed typo in cmark.h comments (Chris Eidhof).
* Clarify in man page that cmark_node_free frees a node's children too.
* Fixed documentation of --width in man page.
* Require re2c >= 1.14.2 (#102).
* Generated scanners.c with more recent re2c.
[0.24.1]
* Commonmark renderer:
+ Use HTML comment, not two blank lines, to separate a list
item from a following code block or list. This makes the
output more portable, since the "two blank lines" rule is
unique to CommonMark. Also, it allows us to break out of
a sublist without breaking out of all levels of nesting.
+ `is_autolink` - handle case where link has no children,
which previously caused a segfault.
+ Use 4-space indent for bullet lists, for increased portability.
+ Use 2-space + newline for line break for increased portability (#90).
+ Improved punctuation escaping. Previously all `)` and
`.` characters after digits were escaped; now they are
only escaped if they are genuinely in a position where
they'd cause a list item. This is achieved by changes in
`render.c`: (a) `renderer->begin_content` is only set to
false after a string of digits at the beginning of the
line, and (b) we never break a line before a digit.
Also, `begin_content` is properly initialized to true.
* Handle NULL root in `consolidate_text_nodes`.
[0.24.0]
* [API change] Added `cmark_node_replace(oldnode, newnode)`.
* Updated spec.txt to 0.24.
* Fixed edge case with escaped parens in link destination (#97).
This was also checked against the #82 case with asan.
* Removed unnecessary check for `fenced` in `cmark_render_html`.
It's sufficient to check that the info string is empty.
Indeed, those who use the API may well create a code block
with an info string without explicitly setting `fenced`.
* Updated format of `test/smart_punct.txt`.
* Updated `test/spec.txt`, `test/smart_punct.txt`, and
`spec_tests.py` to new format.
* Fixed `get_containing_block` logic in `src/commonmark.c`.
This did not allow for the possibility that a node might have no
containing block, causing the commonmark renderer to segfault if
passed an inline node with no block parent.
* Fixed string representations of `CUSTOM_BLOCK`,
`CUSTOM_INLINE`. The old versions `raw_inline` and
`raw_block` were being used, and this led to incorrect xml output.
* Use default opts in python sample wrapper.
* Allow multiline setext header content, as per spec.
* Don't allow spaces in link destinations, even with pointy brackets.
Conforms to latest change in spec.
* Updated `scheme` scanner according to spec change. We no longer use
a whitelist of valid schemes.
* Allow any kind of nodes as children of `CUSTOM_BLOCK` (#96).
* `cmark.h`: moved typedefs for iterator into iterator section.
This just moves some code around so it makes more sense
to read, and in the man page.
* Fixed `make_man_page.py` so it includes typedefs again.
[0.23.0]
* [API change] Added `CUSTOM_BLOCK` and `CUSTOM_INLINE` node types.
They are never generated by the parser, and do not correspond
to CommonMark elements. They are designed to be inserted by
filters that postprocess the AST. For example, a filter might
convert specially marked code blocks to svg diagrams in HTML
and tikz diagrams in LaTeX, passing these through to the renderer
as a `CUSTOM_BLOCK`. These nodes can have children, but they
also have literal text to be printed by the renderer "on enter"
and "on exit." Added `cmark_node_get_on_enter`,
`cmark_node_set_on_enter`, `cmark_node_get_on_exit`,
`cmark_node_set_on_exit` to API.
* [API change] Rename `NODE_HTML` -> `NODE_HTML_BLOCK`,
`NODE_INLINE_HTML` -> `NODE_HTML_INLINE`. Define aliases
so the old names still work, for backwards compatibility.
* [API change] Rename `CMARK_NODE_HEADER` -> `CMARK_NODE_HEADING`.
Note that for backwards compatibility, we have defined aliases:
`CMARK_NODE_HEADER` = `CMARK_NODE_HEADING`,
`cmark_node_get_header_level` = `cmark_node_get_heading_level`, and
`cmark_node_set_header_level` = `cmark_node_set_heading_level`.
* [API change] Rename `CMARK_NODE_HRULE` -> `CMARK_NODE_THEMATIC_BREAK`.
Defined the former as the latter for backwards compatibility.
* Don't allow space between link text and link label in a reference link
(spec change).
* Separate parsing and rendering opts in `cmark.h` (#88).
This change also changes some of these constants' numerical values,
but nothing should change in the API if you use the constants
themselves. It should now be clear in the man page which
options affect parsing and which affect rendering.
* xml renderer - Added xmlns attribute to document node (jgm/CommonMark#87).
* Commonmark renderer: ensure html blocks surrounded by blanks.
Otherwise we get failures of roundtrip tests.
* Commonmark renderer: ensure that literal characters get escaped
when they're at the beginning of a block, e.g. `> \- foo`.
* LaTeX renderer - better handling of internal links.
Now we render `[foo](#bar)` as `\protect\hyperlink{bar}{foo}`.
* Check for NULL pointer in _scan_at (#81).
* `Makefile.nmake`: be more robust when cmake is missing. Previously,
when cmake was missing, the build dir would be created anyway, and
subsequent attempts (even with cmake) would fail, because cmake would
not be run. Depending on `build/CMakeFiles` is more robust -- this won't
be created unless cmake is run. Partially addresses #85.
* Fixed DOCTYPE in xml output.
* commonmark.c: fix `size_t` to `int`. This fixes an MSVC warning
"conversion from 'size_t' to 'int', possible loss of data" (Kevin Wojniak).
* Correct string length in `cmark_parse_document` example (Lee Jeffery).
* Fix non-ASCII end-of-line character check (andyuhnak).
* Fix "declaration shadows a local variable" (Kevin Wojniak).
* Install static library (jgm/CommonMark#381).
* Fix warnings about dropping const qualifier (Kevin Wojniak).
* Use full (unabbreviated) versions of constants (`CMARK_...`).