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A regex search scans the text of each page on Wikipedia in real time, character by character, to find pages that match a specific sequence or pattern of characters. Unlike keyword searching, regex searching is by default case-sensitive, does not ignore punctuation, and operates directly on the page source (MediaWiki markup) rather than on the ...
A regular expression (shortened as regex or regexp), [1] sometimes referred to as rational expression, [2] [3] is a sequence of characters that specifies a match pattern in text. Usually such patterns are used by string-searching algorithms for "find" or "find and replace" operations on strings , or for input validation .
A regex search scans the text of each page on Wikipedia in real time, character by character, to find pages that match a specific sequence or pattern of characters. Unlike keyword searching, regex searching is by default case-sensitive, does not ignore punctuation, and operates directly on the page source (MediaWiki markup) rather than on the ...
Regex searches are likely to time out unless you further limit the search in some way, such as by including another parameter or a search term outside of the insource component of the search string. (For example, X* intitle:/X/ to restrict the search to initial position.) For more details, see mw:Help:CirrusSearch#Regular expression searches.
A comma separated list of the fields to use. Allowed fields are title, text, auxiliary_text, opening_text, headings and all. &cirrusMltUseFields (true or false) use only the field data. Defaults to false: the system will extract the content of the text field to build the query. &cirrusMltPercentTermsToMatch: The percentage of terms to match on.
A simple and inefficient way to see where one string occurs inside another is to check at each index, one by one. First, we see if there is a copy of the needle starting at the first character of the haystack; if not, we look to see if there's a copy of the needle starting at the second character of the haystack, and so forth.
Then click on the "search and replace" icon on the right. In the popup form check the box for "Treat search string as a regular expression". Fill in the "Search for" box with (\|-\n\|) Fill in the "replace with" box with $1style=text-align:left| Then click "Replace all". All the text in the first column will be aligned to the left of their cells.
If the Find ahead button is checked, the text will be searched for and selected while you type into this field (case insensitive and non-regular expression search). If this field is empty, the find buttons searches for the selected text or the word under the cursor. The Clear find button can be used to empty this field.