There is no good way to represent brackets

In Syn, brackets are used to specify special keys like [space], [meta], [delete] (etc).

However, if the user is trying to type brackets, the contents are not parsed correctly by the regex. This results in no keydowns for [ and ].

Syn should be updated to allow for a more natural way to type brackets. Some software (like our's) use brackets extensively for specifying matrices and arrays, since MATLAB is both a programming and mathematics language. And right now it can be a little painful to use brackets with FuncUnit

Start by examining Syn's keyboard parsing regex and reproduce the missing keydown events for literal [ and ] described in the issue. Determine a natural input representation that remains compatible with special keys such as [space], [meta], and [delete], then verify that literal brackets produce keydowns without breaking those existing forms.

Written by the indexing model from the issue text.