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changelog.txt
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[0.29.0.gfm.13]
* Normalized marker row vs. delimiter row nomenclature (#273)
* Exposed CMARK_NODE_FOOTNOTE_DEFINITION literal value (#336)
* Fix format specifier for printing a size_t (#340)
[0.29.0.gfm.12]
* Fixed polynomial time complexity issues per
https://github.com/github/cmark-gfm/security/advisories/GHSA-w4qg-3vf7-m9x5
* Added CodeQL project integration (#337)
* Addressed const qualifier discard compiler warnings (#330, #331)
[0.29.0.gfm.11]
* Improved fixes for polynomial time complexity issues per
https://github.com/github/cmark-gfm/security/advisories/GHSA-66g8-4hjf-77xh
(#323, #324)
* Added fuzzing target for bracketed patterns (#318)
* Fixed bug in list numbering introduced in
763587e8775350b8cb4a2aa0f4cec3685aa96e8b (#322) which caused list numbers
to increment by 2
* Fixed strict prototype clang warning (#310)
* Fixed regression test (#312)
* Added additional output formats to quadratic fuzzer (#327)
* Fixed buffer overflow in fuzzing harness (#326)
Note: these changes may lead to minor changes in expected output on plaintext
rendering of list items. Notably, blank lines may no longer delineate the start
of a list when rendering to plaintext due to changes in how the tight list status
is calculated.
[0.29.0.gfm.10]
* Fixed polynomial time complexity issue per
https://github.com/github/cmark-gfm/security/advisories/GHSA-r8vr-c48j-fcc5
* Fixed polynomial time complexity issues per
https://github.com/github/cmark-gfm/security/advisories/GHSA-66g8-4hjf-77xh
Note: these changes remove redundant bold tag nesting which may result
in existing rendering tests failing, e.g. rendering "____bold____" to html
will no longer yield "<p><strong><strong>bold</strong></strong></p>".
[0.29.0.gfm.9]
* Cleanup: Use of a private header was cleaned up (#248)
* Cleanup: Man page was updated (#255)
* Cleanup: Warnings for -Wstrict-prototypes were cleaned up (#285)
* Cleanup: We avoid header duplication (#289)
* We now store positioning info for url_match (#201)
* We now expose cmark_parent_footnote_def for non-C renderers (#254)
* Footnote aria-label text now reference the specific footnote backref, and we include a data-footnote-backref-idx attribute so the label can be internationalized in a downstream filter (#307)
[0.29.0.gfm.8]
* We restored backwards compatibility by deprecating the `cmark_init_standard_node_flags()` requirement, which is now a noop (#305)
* We added a quadratic complexity fuzzing target (#304)
[0.29.0.gfm.7]
* Fixed a polynomial time complexity issue per
https://github.com/github/cmark-gfm/security/advisories/GHSA-r572-jvj2-3m8p
* Fixed an issue in which crafted markdown document could trigger an
out-of-bounds read in the validate_protocol function per
https://github.com/github/cmark-gfm/security/advisories/GHSA-c944-cv5f-hpvr
* Fixed a polynomial time complexity issue
https://github.com/github/cmark-gfm/security/advisories/GHSA-24f7-9frr-5h2r
* Fixed several polynomial time complexity issues per
https://github.com/github/cmark-gfm/security/advisories/GHSA-29g3-96g3-jg6c
* We removed an unneeded .DS_Store file (#291)
* We added a test for domains with underscores and fix roundtrip behavior (#292)
* We now use an up-to-date clang-format (#294)
* We made a variety of implicit integer trunctions explicit by moving to
size_t as our standard size integer type (#302)
[0.29.0.gfm.6]
* Fixed polynomial time complexity DoS vulnerability in autolink extension
[0.29.0.gfm.5]
* Added xmpp: and mailto: support to the autolink extension
[0.29.0.gfm.4]
* Remove `source` from list of HTML blocks
[0.29.0.gfm.3]
* Fixed heap memory corruption vulnerabiliy via integer overflow per https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x
[0.29.0.gfm.2]
* Fixed issues with footnote rendering when used with the autolinker (#121),
and when footnotes are adjacent (#139).
* We now allow footnotes to be referenced from inside a footnote definition,
we use the footnote label for the fnref href text when rendering html, and
we insert multiple backrefs when a footnote has been referenced multiple
times (#229, #230)
* We added new data- attributes to footnote html rendering to make them
easier to style (#234)
[0.29.0.gfm.1]
* Fixed denial of service bug in GFM's table extension
per https://github.com/github/cmark-gfm/security/advisories/GHSA-7gc6-9qr5-hc85
[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.gfm.20]
* Add tasklist extension implementation (Watson1978, #94).
[0.28.3.gfm.19]
* Prevent out-of-bound memory access in strikethrough matcher (Xavier Décoret, #124).
* Limit recursion in autolink extension (Xavier Décoret, #125).
* Add plaintext rendering for footnotes (Xavier Décoret, #126).
[0.28.3.gfm.18]
* Match strikethrough more strictly (#120).
* Default to safe operation (#123).
[0.28.3.gfm.17]
* Allow extension to provide opaque allocation function (Nicolás Ojeda
Bär, #89).
* Upstream optimisations and fixes.
* Extensions can add custom XML attributes (#116).
* Support for GFM extensions in cmark XML to CommonMark XSLT converter
(Maëlle Salmon, #117).
[0.28.3.gfm.16]
* Do not percent-encode tildes (~) in HTML attribute values (#110).
* Fix footnote references in tables (#112).
[0.28.3.gfm.15]
* Escape non-strikethrough tildes (~) in commonmark output (John MacFarlane, #106).
* Cosmetic fix to table HTML output (John MacFarlane, #105).
* Use two tildes for strikethrough CommonMark output (John MacFarlane, #104).
* Normalised header and define names (#109).
[0.28.3.gfm.14]
* Added a plaintext renderer for strikethrough nodes.
[0.28.3.gfm.13]
* Footnote rendering bugfix (Michael Camilleri, #90).
* Debian packaging (Joachim Nilsson, #97).
* Add CMARK_OPT_STRIKETHROUGH_DOUBLE_TILDE for redcarpet compatibility.
* Add CMARK_OPT_TABLE_PREFER_STYLE_ATTRIBUTES (FUJI Goro, #86, #87).
* Fix pathological nested list parsing (Phil Turnbull, #95).
* Expose more of the extension APIs (Minghao Liu, #96).
* Add python example which uses extensions (Greg Stein, #102).
* Add CMARK_OPT_FULL_INFO_STRING (Mike Kavouras, #103).
[0.28.3.gfm.12]
* Various security and bug fixes.
[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.gfm.11]
* Do not output empty `<tbody>` in table extension.
[0.28.0.gfm.10]
* Fix denial of service parsing references.
[0.28.0.gfm.9]
* Fix denial of service parsing nested links (#49).
[0.28.0.gfm.8]
* Fix bug where autolink would cause `:` to be skipped in emphasis
processing.
[0.28.0.gfm.7]
* Strikethrough characters do not disturb regular emphasis processing.
[0.28.0.gfm.6]
* Fix inline sourcepos info when inlines span multiple lines, and in
ATX headings.
[0.28.0.gfm.5]
* Latest spec.
* Fix a typo in the spec (John Gardner).
* Fix quadratic behavior in reference lookups.
* Add `core_extensions_ensure_registered`.
* Add sourcepos information for inlines.
[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.gfm.4]
* Fix regression with nested parentheses in link targets (#48).
[0.27.1.gfm.3]
* Various undefined behavior issues fixed (#38, #39, #40).
* Tag filter is case-insensitive (#43).
[0.27.1.gfm.2]
* Fix a number of bugs (reading past end of buffer, undefined behavior.
* Add `cmark_syntax_extension_get_private()`. (Jonathan Müller)
[0.27.1.gfm.1]
* Add plaintext renderer.
* Remove normalize option; we now always normalize the AST.
* Add getters for table alignment.
* `make install` also installs the extensions static/shared library.
[0.27.1.gfm.0]
* Add extensions: tagfilter, strikethrough, table, autolink.
* Add arena memory implementation.
* Add CMARK_OPT_GITHUB_PRE_LANG for fenced code blocks.
* Skip UTF-8 BOM on input.
[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_...`).
* Removed outdated targets from Makefile.
* Removed need for sudo in `make bench`.
* Improved benchmark. Use longer test, since `time` has limited resolution.
* Removed `bench.h` and timing calls in `main.c`.
* Updated API docs; getters return empty strings if not set
rather than NULL, as previously documented.
* Added api_tests for custom nodes.
* Made roundtrip test part of the test suite run by cmake.
* Regenerate `scanners.c` using re2c 0.15.3.
* Adjusted scanner for link url. This fixes a heap buffer overflow (#82).
* Added version number (1.0) to XML namespace. We don't guarantee
stability in this until 1.0 is actually released, however.
* Removed obsolete `TIMER` macro.
* Make `LIB_INSTALL_DIR` configurable (Mathieu Bridon, #79).
* Removed out-of-date luajit wrapper.
* Use `input`, not `parser->curline` to determine last line length.
* Small optimizations in `_scan_at`.
* Replaced hard-coded 4 with `TAB_STOP`.
* Have `make format` reformat api tests as well.
* Added api tests for man, latex, commonmark, and xml renderers (#51).
* render.c: added `begin_content` field. This is like `begin_line` except
that it doesn't trigger production of the prefix. So it can be set
after an initial prefix (say `> `) is printed by the renderer, and
consulted in determining whether to escape content that has a special
meaning at the beginning of a line. Used in the commonmark renderer.
* Python 3.5 compatibility: don't require HTMLParseError (Zhiming Wang).
HTMLParseError was removed in Python 3.5. Since it could never be thrown
in Python 3.5+, we simply define a placeholder when HTMLParseError
cannot be imported.
* Set `convert_charrefs=False` in `normalize.py` (#83). This defeats the
new default as of python 3.5, and allows the script to work with python
3.5.
[0.22.0]
* Removed `pre` from blocktags scanner. `pre` is handled separately
in rule 1 and needn't be handled in rule 6.
* Added `iframe` to list of blocktags, as per spec change.
* Fixed bug with `HRULE` after blank line. This previously caused cmark
to break out of a list, thinking it had two consecutive blanks.
* Check for empty string before trying to look at line ending.
* Make sure every line fed to `S_process_line` ends with `\n` (#72).
So `S_process_line` sees only unix style line endings. Ultimately we
probably want a better solution, allowing the line ending style of
the input file to be preserved. This solution forces output with newlines.
* Improved `cmark_strbuf_normalize_whitespace` (#73). Now all characters
that satisfy `cmark_isspace` are recognized as whitespace. Previously
`\r` and `\t` (and others) weren't included.
* Treat line ending with EOF as ending with newline (#71).
* Fixed `--hardbreaks` with `\r\n` line breaks (#68).
* Disallow list item starting with multiple blank lines (jgm/CommonMark#332).
* Allow tabs before closing `#`s in ATX header
* Removed `cmark_strbuf_printf` and `cmark_strbuf_vprintf`.
These are no longer needed, and cause complications for MSVC.
Also removed `HAVE_VA_COPY` and `HAVE_C99_SNPRINTF` feature tests.
* Added option to disable tests (Kevin Wojniak).
* Added `CMARK_INLINE` macro.
* Removed need to disable MSVC warnings 4267, 4244, 4800
(Kevin Wojniak).
* Fixed MSVC inline errors when cmark is included in sources that
don't have the same set of disabled warnings (Kevin Wojniak).
* Fix `FileNotFoundError` errors on tests when cmark is built from
another project via `add_subdirectory()` (Kevin Wojniak).
* Prefix `utf8proc` functions to avoid conflict with existing library
(Kevin Wojniak).
* Avoid name clash between Windows `.pdb` files (Nick Wellnhofer).
* Improved `smart_punct.txt` (see jgm/commonmark.js#61).
* Set `POSITION_INDEPENDENT_CODE` `ON` for static library (see #39).
* `make bench`: allow overriding `BENCHFILE`. Previously if you did
this, it would clopper `BENCHFILE` with the default bench file.
* `make bench`: Use -10 priority with renice.
* Improved `make_autolink`. Ensures that title is chunk with empty
string rather than NULL, as with other links.
* Added `clang-check` target.
* Travis: split `roundtrip_test` and `leakcheck` (OGINO Masanori).
* Use clang-format, llvm style, for formatting. Reformatted all source files.
Added `format` target to Makefile. Removed `astyle` target.
Updated `.editorconfig`.
[0.21.0]
* Updated to version 0.21 of spec.
* Added latex renderer (#31). New exported function in API:
`cmark_render_latex`. New source file: `src/latex.hs`.
* Updates for new HTML block spec. Removed old `html_block_tag` scanner.
Added new `html_block_start` and `html_block_start_7`, as well
as `html_block_end_n` for n = 1-5. Rewrote block parser for new HTML
block spec.
* We no longer preprocess tabs to spaces before parsing.
Instead, we keep track of both the byte offset and
the (virtual) column as we parse block starts.
This allows us to handle tabs without converting
to spaces first. Tabs are left as tabs in the output, as
per the revised spec.
* Removed utf8 validation by default. We now replace null characters
in the line splitting code.
* Added `CMARK_OPT_VALIDATE_UTF8` option and command-line option
`--validate-utf8`. This option causes cmark to check for valid
UTF-8, replacing invalid sequences with the replacement
character, U+FFFD. Previously this was done by default in
connection with tab expansion, but we no longer do it by
default with the new tab treatment. (Many applications will
know that the input is valid UTF-8, so validation will not
be necessary.)
* Added `CMARK_OPT_SAFE` option and `--safe` command-line flag.
+ Added `CMARK_OPT_SAFE`. This option disables rendering of raw HTML
and potentially dangerous links.
+ Added `--safe` option in command-line program.
+ Updated `cmark.3` man page.
+ Added `scan_dangerous_url` to scanners.
+ In HTML, suppress rendering of raw HTML and potentially dangerous
links if `CMARK_OPT_SAFE`. Dangerous URLs are those that begin
with `javascript:`, `vbscript:`, `file:`, or `data:` (except for
`image/png`, `image/gif`, `image/jpeg`, or `image/webp` mime types).
+ Added `api_test` for `OPT_CMARK_SAFE`.
+ Rewrote `README.md` on security.
* Limit ordered list start to 9 digits, per spec.
* Added width parameter to `render_man` (API change).
* Extracted common renderer code from latex, man, and commonmark
renderers into a separate module, `renderer.[ch]` (#63). To write a
renderer now, you only need to write a character escaping function
and a node rendering function. You pass these to `cmark_render`
and it handles all the plumbing (including line wrapping) for you.
So far this is an internal module, but we might consider adding
it to the API in the future.
* commonmark writer: correctly handle email autolinks.
* commonmark writer: escape `!`.
* Fixed soft breaks in commonmark renderer.
* Fixed scanner for link url. re2c returns the longest match, so we
were getting bad results with `[link](foo\(and\(bar\)\))`
which it would parse as containing a bare `\` followed by
an in-parens chunk ending with the final paren.
* Allow non-initial hyphens in html tag names. This allows for
custom tags, see jgm/CommonMark#239.
* Updated `test/smart_punct.txt`.
* Implemented new treatment of hyphens with `--smart`, converting
sequences of hyphens to sequences of em and en dashes that contain no
hyphens.
* HTML renderer: properly split info on first space char (see
jgm/commonmark.js#54).
* Changed version variables to functions (#60, Andrius Bentkus).
This is easier to access using ffi, since some languages, like C#
like to use only function interfaces for accessing library
functionality.
* `process_emphasis`: Fixed setting lower bound to potential openers.
Renamed `potential_openers` -> `openers_bottom`.
Renamed `start_delim` -> `stack_bottom`.
* Added case for #59 to `pathological_test.py`.
* Fixed emphasis/link parsing bug (#59).
* Fixed off-by-one error in line splitting routine.
This caused certain NULLs not to be replaced.
* Don't rtrim in `subject_from_buffer`. This gives bad results in
parsing reference links, where we might have trailing blanks
(`finalize` removes the bytes parsed as a reference definition;
before this change, some blank bytes might remain on the line).
+ Added `column` and `first_nonspace_column` fields to `parser`.
+ Added utility function to advance the offset, computing
the virtual column too. Note that we don't need to deal with
UTF-8 here at all. Only ASCII occurs in block starts.
+ Significant performance improvement due to the fact that
we're not doing UTF-8 validation.
* Fixed entity lookup table. The old one had many errors.
The new one is derived from the list in the npm entities package.
Since the sequences can now be longer (multi-code-point), we
have bumped the length limit from 4 to 8, which also affects
`houdini_html_u.c`. An example of the kind of error that was fixed:
`≧̸` should be rendered as "≧̸" (U+02267 U+00338), but it was
being rendered as "≧" (which is the same as `≧`).
* Replace gperf-based entity lookup with binary tree lookup.
The primary advantage is a big reduction in the size of
the compiled library and executable (> 100K).
There should be no measurable performance difference in
normal documents. I detected only a slight performance
hit in a file containing 1,000,000 entities.
+ Removed `src/html_unescape.gperf` and `src/html_unescape.h`.
+ Added `src/entities.h` (generated by `tools/make_entities_h.py`).
+ Added binary tree lookup functions to `houdini_html_u.c`, and
use the data in `src/entities.h`.
* Renamed `entities.h` -> `entities.inc`, and
`tools/make_entities_h.py` -> `tools/make_entitis_inc.py`.
* Fixed cases like
```