diff options
Diffstat (limited to 'spec.txt')
| -rw-r--r-- | spec.txt | 16 |
1 files changed, 10 insertions, 6 deletions
@@ -7204,7 +7204,9 @@ A [link destination](@) consists of either - a nonempty sequence of characters that does not include ASCII space or control characters, and includes parentheses only if (a) they are backslash-escaped or (b) they are part of - a balanced pair of unescaped parentheses. + a balanced pair of unescaped parentheses. (Implementations + may impose limits on parentheses nesting to avoid performance + issues, but at least three levels of nesting should be supported.) A [link title](@) consists of either @@ -7310,7 +7312,7 @@ Parentheses inside the link destination may be escaped: <p><a href="(foo)">link</a></p> ```````````````````````````````` -Any number parentheses are allowed without escaping, as long as they are +Any number of parentheses are allowed without escaping, as long as they are balanced: ```````````````````````````````` example @@ -7616,13 +7618,15 @@ that [matches] a [link reference definition] elsewhere in the document. A [link label](@) begins with a left bracket (`[`) and ends with the first right bracket (`]`) that is not backslash-escaped. Between these brackets there must be at least one [non-whitespace character]. -Unescaped square bracket characters are not allowed in -[link labels]. A link label can have at most 999 -characters inside the square brackets. +Unescaped square bracket characters are not allowed inside the +opening and closing square brackets of [link labels]. A link +label can have at most 999 characters inside the square +brackets. One label [matches](@) another just in case their normalized forms are equal. To normalize a -label, perform the *Unicode case fold*, strip leading and trailing +label, strip off the opening and closing brackets, +perform the *Unicode case fold*, strip leading and trailing [whitespace] and collapse consecutive internal [whitespace] to a single space. If there are multiple matching reference link definitions, the one that comes first in the |