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Instead of doing a basic indexed search on keywords, you can perform a regex search, which bypasses the index.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.
For these two kinds of searches a word is any string of consecutive letters and numbers matching a whole word or phrase. All other keyboard characters like punctuation marks, brackets and slashes, math and other symbols, are not normally searchable.
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 ...
So your numbers don't end up with commas at the end. Copy just the number columns to a sandbox or a new section of a page. See relevant sections of Help:Table to do so. In source mode editing use "search and replace" to delete trailing spaces. Check the box for "Treat search string as a regular expression". Replace [ \t]+$ with nothing. Then ...
A numeronym like C10k is considered one word for proximity, but two words for matching. pluralized numbers, like "2010s" The following match the single term txt2regEx on a page: txt, 2, regex, reg, ex, txt2, 2reg, 2regex. None of those portions would match in a phrase search; only "txt2regex" would match. [5]
The original software, now called PCRE1 (the 1.xx–8.xx series), has had bugs mended, but no further development. As of 2020, it is considered obsolete, and the current 8.45 release is likely to be the last. The new PCRE2 code (the 10.xx series) has had a number of extensions and coding improvements and is where development takes place.
Tree patterns are used in some programming languages as a general tool to process data based on its structure, e.g. C#, [1] F#, [2] Haskell, [3] Java [4], ML, Python, [5] Ruby, [6] Rust, [7] Scala, [8] Swift [9] and the symbolic mathematics language Mathematica have special syntax for expressing tree patterns and a language construct for ...
The language of M can be described by the regular language given by the regular expression (0|1)*1. All possible state sequences for the input string "1011" are shown in the lower picture. The string is accepted by M since one state sequence satisfies the above definition; it does not matter that other sequences fail to do so. The picture can ...