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Regular expressions (or regex) are a common and very versatile programming technique for manipulating strings. On Wikipedia you can use a limited version of regex called a Lua pattern to select and modify bits of text from a string. The pattern is a piece of code describing what you are looking for in the string.
The string-search functions in Lua script can run extremely fast, comparing millions of characters per second. For example, a search of a 40,000-character article text, for 99 separate words (passed as 99 parameters in a template), ran within one second of Lua CPU clock time.
This module is subject to page protection.It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing.
Note: Lua patterns are not regular expressions in the traditional POSIX sense, and they are not even a subset of regular expressions. But they share many constructs with regular expressions (more below). Lua patterns are used to define, find and handle a pattern in a string. It can do the common search and replace action in a text, but it has ...
[[Category:Templates based on the String Lua module]] to the <includeonly> section at the bottom of that page. Otherwise, add <noinclude>[[Category:Templates based on the String Lua module]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character.
Jabbar, a U.S. citizen who lived in Texas and was an Army veteran, carried an ISIS flag on the trailer hitch of the truck, which appeared to be rented, the FBI said.
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