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## Please edit system and help pages ONLY in the master wiki!
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## For more information, please see MoinMoin:MoinDev/Translation.
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#acl -All:write Default
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== What is a TextCHA? ==
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It is a pure text alternative to ''CAPTCHAs''. !MoinMoin uses it to prevent wiki spamming.
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* for page save, ask a random question
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* match the given answer against a regular expression
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* q and a can be configured in the wiki config
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* multi language support: a user gets a textcha in his language or in language_default or in English (depending on availability of questions/answers for the language)
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* you need to answer the textcha for e.g.:
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* user profile creation
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* you do not need to answer the textcha for e.g.:
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* page preview (if you do, it will remember what you entered, though)
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* user profile changes
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* it is usually a simple/short answer
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* it compares case-insensitive
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* sometimes you can find the right answer by reading some important pages of the wiki
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Tips for configuration:
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* have 1 word / 1 number answers
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* ask questions that normal users of your site are likely to be able to answer
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* do not ask too hard questions
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* do not ask "computable" questions, like "1+1" or "2*3"
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* do not ask too common questions
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* do not share your questions with other sites / copy questions from other sites (or spammers might try to adapt to this)
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* you should at least give textchas for 'en' (or for your language_default, if that is not 'en') as this will be used as fallback if !MoinMoin does not find a textcha in the user's language
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In your wiki config, do something like this:
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textchas_disabled_group = u"TrustedEditorGroup" # members of this don't get textchas
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'en': { # silly english example textchas (do not use them!)
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u"Enter the first 9 digits of Pi.": ur"3\.14159265",
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u"What is the opposite of 'day'?": ur"(night|nite)",
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'de': { # some german textchas
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u"Gib die ersten 9 Stellen von Pi ein.": ur"3\.14159265",
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u"Was ist das Gegenteil von 'Tag'?": ur"nacht",
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# you can add more languages if you like