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