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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 .
The C language defines whitespace characters to be "space, horizontal tab, new-line, vertical tab, and form-feed". [29] The HTTP network protocol requires different types of whitespace to be used in different parts of the protocol, such as: only the space character in the status line, CRLF at the end of a line, and "linear whitespace" in header ...
Sometimes, a minor fix will help eliminate or reduce whitespace. This may involve adding or removing one blank line from some part of the page, re-ordering templates, or the use of a gallery for multiple images. If an embedded list creates white space, using two or more columns may solve the problem.
A second common application of non-breaking spaces is in plain text file formats such as SGML, HTML, TeX and LaTeX, whose rendering engines are programmed to treat sequences of whitespace characters (space, newline, tab, form feed, etc.) as if they were a single character (but this behavior can be overridden).
local p = {} function p. indent (frame)-- Trim whitespace from the arguments and remove blank values. local args = {} if type (frame. args) == 'table' then for k, v in pairs (frame. args) do v = mw. text. trim (v) if v ~= '' then args [k] = v end end end-- Set variables. local indent = tonumber (args [1]) local br = args [2] local ret = ''-- Insert line breaks to match the functionality of the ...
No new headings are created for multi-line selections. Shift-click decreases the heading level. Current or selected line(s) Bullet list: Converts item(s) to a bulleted list by adding a leading *. Shift-click removes leading *. Current or selected line(s) Number list: Converts item(s) to a numbered list, adding a leading #. Shift-click removes ...
Its semantics and HTML implementation are similar to the soft hyphen, but soft hyphens display a hyphen character at the point where the line is broken. The zero-width space can be used to mark word breaks in languages without visible space between words, such as Thai , Myanmar , Khmer , and Japanese .
sed is a line-oriented text processing utility: it reads text, line by line, from an input stream or file, into an internal buffer called the pattern space. Each line read starts a cycle . To the pattern space, sed applies one or more operations which have been specified via a sed script . sed implements a programming language with about 25 ...