Redmine

The regular expression in Redcloth3#footnote_ref matches the following for footnote-references:

def footnote_ref( text )
  text.gsub!(/\b\[([0-9]+?)\](\s)?/,
    '<sup><a href="#fn\1">\1</a></sup>\2')
end

Here, the \b requirements is effectively the same as a positive-lookbehind for a unicode word-character (A member of one of the following Unicode general categories: Letter, Mark, Number, Connector_Punctuation), i.e. (?<=\p{Word}). This lookbehind rule however does not match the ] character of the first footnote reference.

This might be fixed by including this character in the explicit lookbehind rule, i.e. by changing the regex from \b to (?<=[\p{Word}\]])

A full patch against Redmine trunk at r22537 is attached.

Committed and merged to stable branches, thanks!