# Lijst met reguliere expressies

 Term Representation/Use Elk teken The given character unless it is a regular expression meta character, which follow in this table. . Elk enkel teken behalve een regeleinde of een alinea-einde. De zoekterm "st.nd" komt bijvoorbeeld overeen met zowel "stand" als "stond". ^ Het begin van een alinea of cel. Speciale objecten zoals lege velden of door tekens verankerde frames aan het begin van een alinea worden genegeerd. Voorbeeld: "^ Peter" komt alleen overeen met het woord "Peter" wanneer dit het eerste woord van een alinea is. \$ Het einde van een alinea of cel. Speciale objecten zoals lege velden of Aan teken verankerde frames aan het einde van een alinea worden genegeerd. Voorbeeld: "Peter \$" komt alleen overeen wanneer het woord "Peter" het laatste woord van een alinea is, let op "Peter" kan niet worden gevolgd door een punt. \$ alleenstaand betekent het einde van een alinea. Op deze manier is het mogelijk om alinea einden te zoeken en te vervangen. * Nul of meer van de reguliere expressie die er direct aan voorafgaat. "Ab * c" komt bijvoorbeeld overeen met "Ac", "Abc", "Abbc", "Abbbc", enzovoort. + One or more of the regular expression term immediately preceding it. For example, "AX.+4" finds "AXx4", but not "AX4". The longest possible string that matches this regular expression in a paragraph is always matched. If the paragraph contains the string "AX 4 AX4", the entire passage is highlighted. ? Zero or one of the regular expression term immediately preceding it. For example, "Texts?" matches "Text" and "Texts" and "x(ab|c)?y" finds "xy", "xaby", or "xcy". \ The special character that follows it is interpreted as a normal character and not as a regular expression meta character (except for the combinations "\n", "\t", "\b", "\>" and "\<"). For example, "tree\." matches "tree.", not "treed" or "trees". \n A line break that was inserted with the Shift+Enter key combination when in the Find text box. A paragraph break that can be entered with the Enter or Return key when in the Replace text box. To change line breaks into paragraph breaks, enter \n in both the Find and Replace boxes, and then perform a search and replace. \t A tab character. Can also be used in the Replace box. \b A word boundary. For example, "\bbook" matches "bookmark" and "book" but not "checkbook" whereas "book\b" matches "checkbook" and "book" but not "bookmark". Note, this form replaces the obsolete (although they still work for now) forms "\>" (match end of word) and "\<" (match start of word). ^\$ Vindt een lege alinea. ^. Zoekt het eerste teken van een alinea. & or \$0 Adds the string that was found by the search criteria in the Find box to the term in the Replace box when you make a replacement. For example, if you enter "window" in the Find box and "&frame" in the Replace box, the word "window" is replaced with "windowframe". You can also enter an "&" in the Replace box to modify the Attributes or the Format of the string found by the search criteria. [...] Any single occurrence of any one of the characters that are between the brackets. For example: "[abc123]" matches the characters ‘a’, ‘b’, ’c’, ‘1’, ‘2’ and ‘3’. "[a-e]" matches single occurrences of the characters a through e, inclusive (the range must be specified with the character having the smallest Unicode code number first). "[a-eh-x]" matches any single occurrence of the characters that are in the ranges ‘a’ through ‘e’ and ‘h’ through ‘x’. [^...] Any single occurrence of a character, including Tab, Space and Line Break characters, that is not in the list of characters specified inclusive ranges are permitted. For example "[^a-syz]" matches all characters not in the inclusive range ‘a’ through ‘s’ or the characters ‘y’ and ‘z’. \uXXXX \UXXXXXXXX The character represented by the four-digit hexadecimal Unicode code (XXXX). The character represented by the eight-digit hexadecimal Unicode code (XXXXXXXX). For certain symbol fonts the Unicode code for special characters may depend on the font in use. The Unicode codes can be viewed by choosing Insert - Special Character. | The infix operator delimiting alternatives. Matches the term preceding the "|" or the term following the "|". For example, "this|that" matches occurrences of both "this" and "that". {N} The post-fix repetition operator that specifies an exact number of occurrences ("N") of the regular expression term immediately preceding it must be present for a match to occur. For example, "tre{2}" matches "tree". {N,M} The post-fix repetition operator that specifies a range (minimum of "N" to a maximum of "M") of occurrences of the regular expression term immediately preceding it that can be present for a match to occur. For example, "tre{1,2}" marches "tre" and "tree". {N,} The post-fix repetition operator that specifies a range (minimum "N" to an unspecified maximum) of occurrences of the regular expression term immediately preceding it that can be present for a match to occur. (The maximum number of occurrences is limited only by the size of the document). For example, "tre{2,}" matches "tree", "treee", and "treeeee". (...) The grouping construct that serves three purposes. To enclose a set of ‘|’ alternatives. For example, the regular expression "b(oo|ac)k" matches both "book" and "back". To group terms in a complex expression to be operated on by the post-fix operators: "*", "+" and "?" along with the post-fix repetition operators. For example, the regular expression "a(bc)?d" matches both "ad" and "abcd" in a search.; the regular expression "M(iss){2}ippi" matches "Mississippi". To record the matched sub string inside the parentheses as a reference for later use in the Find box using the "\n" construct or in the Replace box using the "\$n" construct, where the reference to the first matched sub string in the current expression in the Find box is represented by "\1" in the Find box and by "\$1" in the Replace box, the reference to the second matched sub string by "\2" and "\$2" respectively, and so on. For example, the regular expression "(890)7\1\1" matches "8907890890". With the regular expression "\b(fruit|truth)\b" in the Find box and the regular expression "\$1ful" in the Replace box occurrences of the words "fruit" and "truth" can be replaced with the words "fruitful" and "truthful" respectively without affecting the words "fruitfully" and "truthfully" [:alpha:] Staat voor een alfabetisch teken. Gebruik [:alpha:]+ om er één of meer te vinden. [:digit:] Staat voor een decimaal cijfer. Gebruik [:digit:]+ om er één of meer te vinden. [:alnum:] Staat voor een alfanumeriek teken ([:alpha:] en [:digit:]). [:space:] Vertegenwoordigt het teken voor een spatie (maar geen andere tekens voor witruimte). [:print:] Staat voor een afdrukbaar teken. [:cntrl:] Staat voor een niet-afdrukbaar teken. [:lower:] Staat voor een teken in kleine letters als Identieke hoofdletters/kleine letters is geselecteerd in bij Opties. [:upper:] Staat voor een teken in hoofdletters als Identieke hoofdletters/kleine letters is geselecteerd bij Opties.

Voor een volledige lijst met ondersteunde metatekens en syntaxis, zie ICU Regular Expressions documentation (Engels)

Note that currently all named character class terms, [:alpha:] through [:upper:], must be enclosed in parentheses when used in a regular expression, see the examples that follow.

Regular expression terms can be combined to form complex and sophisticated regular expressions for searches as show in the following examples.

## Voorbeelden

 Expression Meaning ^\$ An empty paragraph. ^ specifies that the match must be at the start of a paragraph, \$ specifies that a paragraph mark or the end of a cell must follow the matched string. ^. The first character of a paragraph. ^ specifies that the match must be at the start of a paragraph, . specifies any single character. e([:digit:])? Matches "e" by itself or an "e" followed by one digit. e specifies the character "e", [:digit:] specifies any decimal digit, ? specifies zero or one occurrences of [:digit:]. ^([:digit:])\$ Matches a paragraph or cells containing exactly one digit. ^ specifies that the match must be at the start of a paragraph, [:digit:] specifies any decimal digit, \$ specifies that a paragraph mark or the end of a cell must follow the matched string. ^[:digit:]{3}\$ Matches a paragraph or cell containing only three digit numbers ^ specifies that the match must be at the start of a paragraph, [:digit:] specifies any decimal digit, {3} specifies that [:digit:] must occur three times, \$ specifies that a paragraph mark or the end of a cell must follow the matched string. \bconst(itu|ruc)tion\b Matches the words "constitution" and "construction" but not the word "constitutional." \b specifies that the match must begin at a word boundary, const specifies the characters "const", ( starts the group, itu specifies the characters "itu", | specifies the alternative, ruc specifies the characters "ruc", ) ends the group, tion specifies the characters "tion", /b specifies that the match must end at a word boundary.

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