Edge Cases Thread

[vhyrro]

All the Edge Cases

The specification isn't perfect, and as such this thread exists for any other parser writers to ask questions or note inconsistencies/ambiguities in the spec.

cc @boltlessengineer :D

[boltlessengineer]

whitespace/end-of-line rules in link destination:

{/ pa
th/to
/file.txt}

{:pa th/t\ o/file:}

{:path/t\
o/file:}

[boltlessengineer]

link destinations should be case-insensitive

I couldn't find this in doc, but Neorg seems to be working like this.

$ Paragraph Break
description

... {$ Paragraph Break} ... %this is valid%
... {$ paragraph break} ... %this is also valid%

[boltlessengineer]

What happens when we put carryover tag inside attached modifiers? Considering the precedence, should it break the attached modifier? Or as line-ending inside attached modifier can be ignored, carryover tag inside attached modifier is just invalid?

*bold
+color red
text*

Similar precedence cases:

*bold
|example
text*
|end

*bold
* heading
text*

[boltlessengineer]

Does terminating slide with a paragraph break means it is only terminating that list item but not a whole list?

- :
  paragraph

- is this same list? or another list?

[boltlessengineer]

Anchor link inside anchor link

[[my link]]

I think we can solve this edge case by converting to syntax sugar for wikilinks (automatically converted to {? my link})
Wiki-links are used a lot in many workflows so having extra syntax sugar made up with lowercases would be really useful.
Because anchors and wikilinks do similar things, users can think this syntax as something link hard-anchor.

[boltlessengineer]

Free form attached modifier inside headings

* Contextual `|` Delimiter
  The pipe (`|`) character ...

Cause | opens free-form attached modifier, these two lines are part of single paragraph segment inside header

[VoreckLukas]

Can @document.meta tags appear anywhere in the document or only at the beginning?
If the former, in this case:

@document.meta
title: sometitle
@end

Imagine some paragraphs here

@document.meta
title: someothertitle
@end

Does sometitle or someothertitle take precedence

[vhyrro]

Extra: spec doesn't define what sort of objects are allowed after a single definition (only a paragraph? or any single complex object?)

[boltlessengineer]

escape sequence can be used to escape non-punctuation character, is this intended behavior?

\* - this is common usecase of escape sequence

\a - and this is also escape sequence according to spec

[boltlessengineer]

Injection to link location

* evil link injection} {https://example.com

link to {* evil link injection} {https://example.com}[that heading]
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Should spec disallow { and } characters inside link location?

[boltlessengineer]

Structable's prefix inside attached modifiers?

*bold
- 
word*

If there is no following whitespace in line 2, this would be valid attached modifier, right?
But if line 2 is - (- followed by whitespace,)
is this valid attached modifier or syntax error for unordered list?

[vhyrro]

Since detached modifiers have a higher precedence than attached modifiers it becomes an unclosed *bold, a syntax error for the unordered list and then word*

[vhyrro]

escape sequence can be used to escape non-punctuation character, is this intended behavior?

\* - this is common usecase of escape sequence

\a - and this is also escape sequence according to spec

Yep, it is! It's for the sake of consistency. It won't do anything, in fact it will just return an a as is :)