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Regular expressions are used in search engines, in search and replace dialogs of word processors and text editors, in text processing utilities such as sed and AWK, and in lexical analysis. Regular expressions are supported in many programming languages. Library implementations are often called an "engine", [4] [5] and many of these are ...
You can—and should—add additional search terms when using insource:/regex/ to reduce the amount of text being processed. For example: For example: polish insource:/polish/ finds pages that match a case-insensitive stemmed keyword search for "polish" (including "polished" or "polishing"); then does a case-sensitive regex search within those ...
Greed, in regular expression context, describes the number of characters which will be matched (often also stated as "consumed") by a variable length portion of a regular expression – a token or group followed by a quantifier, which specifies a number (or range of numbers) of tokens. If the portion of the regular expression is "greedy", it ...
For a guide to displaying mathematical equations and formulas, see Help:Displaying a formula; For a guide to editing, see Wikipedia:Contributing to Wikipedia; For an overview of commonly used style guidelines, see Wikipedia:Simplified Manual of Style; For a page on how to use Wikipedia in bite-sized morsels, see Wikipedia:Tips
Insert an optional hyphen – a point at which a word may be broken over the end of a line, with a visible hyphen inserted at line end. When parameters are specified, they are displayed in order, separated by optional hyphens. Any number of parameters can be used. Template parameters [Edit template data] This template prefers inline formatting of parameters. Parameter Description Type Status ...
If you use this tag to put a formula in the line with text, put it in the {} template. The {{ math }} template uses HTML , and will size-match a serif font, and will also prevent line-wrap. All templates are sensitive to the = sign, so remember to replace = with {{ = }} in template input, or start the input with 1= .
A Unicode character is assigned a unique Name (na). [1] The name is composed of uppercase letters A–Z, digits 0–9, hyphen-minus and space.Some sequences are excluded: names beginning with a space or hyphen, names ending with a space or hyphen, repeated spaces or hyphens, and space after hyphen are not allowed.
It is easier, that is, if you already understand how templates "escape" the pipe character and the equals sign. See Help:Template#Parameters for other important details. The procedure here is an iterative, read-evaluate-modify cycle. Regex development requires that you study the target data while writing and rewriting its pattern.