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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.
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Use zero-terminated C strings and a separate length field instead of
cmark_chunks. Literal inline text will now be copied from the parent
block's content buffer, slowing the benchmark down by 10-15%.
The node struct never references memory of other nodes now, fixing #309.
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.
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Use zero-terminated C strings instead of cmark_chunks without storing
the length. This introduces a few additional strlen computations,
but overhead should be low.
Allows to reduce size of struct cmark_node later.
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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.
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See commonmark/commonmark.js#177.
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to conform with spec change.
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A link destination can't start with `<` unless it is
an angle-bracket link that also ends with `>`.
(If your URL really starts with `<`, URL-escape it.)
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both have lengths that are multiples of 3.
See commonmark/commonmark#528.
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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.
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Closes #263.
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These affect both parsing and writing commonmark.
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To conform to recent spec change.
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> 32 nested balanced parens in a link is bananas
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Closes #227.
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A UBSAN warning can be triggered because the link title is an empty string:
src/inlines.c:113:20: runtime error: null pointer passed as argument 2, which is declared to never be null
which can be triggered by:
```
[f]:_
[f]
```
The length of the memcpy is zero so the NULL pointer is not dereferenced but it
is still undefined behaviour.
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This also brings the code into closer alignment with the wording
of the spec.
See jgm/CommonMark#467.
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Only ascii punctuation characters are escapable,
per the spec.
Closes #192.
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Note, however, that this may not be needed at all:
the old code would have gone into an infinite loop
if the delimiter stack were not already freed.
If we can prove that the delimiter stack is empty
at this point, we could remove this; on the other hand,
it may not hurt to keep it here defensively.
Closes #189.
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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")) "*"
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Noticed the need for this through fuzzing.
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We now use a much smaller array.
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This reverts commit 9e643720ec903f3b448bd2589a0c02c2514805ae.
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This reverts commit 4fbe344df43ed7f60a3d3a53981088334cb709fc.
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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.
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* Improve strbuf guarantees
Introduce BUFSIZE_MAX macro and make sure that the strbuf implementation
can handle strings up to this size.
* Abort early if document size exceeds internal limit
* Change types for source map offsets
Switch to size_t for the public API, making the public headers
C89-compatible again.
Switch to bufsize_t internally, reducing memory usage and improving
performance on 32-bit platforms.
* Make parser return NULL on internal index overflow
Make S_parser_feed set an error and ignore subsequent chunks if the
total input document size exceeds an internal limit. Make
cmark_parser_finish return NULL if an error was encountered. Add
public API functions to retrieve error code and error message.
strbuf overflow in renderers and OOM in parser or renderers still
cause an abort.
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* open_new_blocks: always create child before advancing offset
* Source map
* Extent's typology
* In-depth python bindings
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- 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 ````
...
Thanks to Martin Mitáš for identifying the problem and for
discussion of solutions.
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See jgm/CommonMark#427
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