Don't allow [[ or ]] and some other characters in tiddler titles

[UdoBorkowski]

It should not be possible (e.g.) to write a tiddler titled:

TiddlyWiki can't cope with "[[]]" as tag

since you will not be able to reference it in a pretty link:

[[Ticket 234|TiddlyWiki can't cope with "[[]]" as tag]]

Since the title is a "title" people will probably want to use nearly every possible text as the title, even the given one

Probably we need some kind of "escaping" here. E.g. writing

[[Ticket 234|TiddlyWiki can't cope with "\[\[\]\]" as tag]]

may solve this problem

For details see this discussion

[UdoBorkowski]

Beside "[ and ?]" the "|" is also a critical char in a tiddler's title since it makes it impossible to use it in a pretty link.

E.g. "Don't use | in tiddler title" used in a pretty link

[[Don't use | in tiddler title]]

would be interpreted as the link to the tiddler " in tiddler title".

[JeremyRuston]

As discussed here, the colon character ":" also creates problems.

[FND]

cross-reference: #161