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<helpdocument version="1.0">
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<meta>
<topic id="textshared0102100001xml" indexer="include" status="PUBLISH">
<title xml-lang="en-US" id="tit">List of Regular Expressions</title>
<filename>/text/shared/01/02100001.xhp</filename>
</topic>
</meta>
<body>
<bookmark xml-lang="en-US" branch="index" id="bm_id3146765">
<bookmark_value>regular expressions; list of</bookmark_value>
<bookmark_value>regular expressions; new line</bookmark_value>
<bookmark_value>regular expressions; empty paragraph</bookmark_value>
<bookmark_value>regular expressions; begin of word</bookmark_value>
<bookmark_value>regular expressions; begin of paragraph</bookmark_value>
<bookmark_value>regular expressions; end of paragraph</bookmark_value>
<bookmark_value>lists; regular expressions</bookmark_value>
<bookmark_value>replacing; tab stops (regular expressions)</bookmark_value>
<bookmark_value>tab stops; regular expressions</bookmark_value>
<bookmark_value>concatenation, see ampersand symbol</bookmark_value>
<bookmark_value>ampersand symbol, see also operators</bookmark_value>
</bookmark><comment>mw added "replacing;" and "tab stops;"</comment>
<h1 xml-lang="en-US" id="hd_id3146765"><variable id="02100001"><link href="text/shared/01/02100001.xhp">List of Regular Expressions</link></variable></h1>
<table id="tbl_id3149517">
<tablerow>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3149741" role="tablehead">Term</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3155577" role="tablehead">Representation/Use</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph xml-lang="en-US" id="par_id6600543" role="tablecontent">Any character</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id9824518.00000001" role="tablecontent">The given character, unless it is a regular expression meta character. The list of meta characters follows in this table.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph localize="false" id="par_id3152427" role="tablecontent">.</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3149031" role="tablecontent">Any single character except a line break or a paragraph break. For example, the search term "sh.rt" matches both "shirt" and "short".</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph localize="false" id="par_id3154682" role="tablecontent">^</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3155351" role="tablecontent">The beginning of a paragraph or cell. Special objects such as empty fields or character-anchored frames, at the beginning of a paragraph are ignored. Example: "^Peter" matches the word "Peter" only when it is the first word of a paragraph.
</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3159194" localize="false" role="tablecontent">$</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3152542" role="tablecontent">The end of a paragraph or cell. Special objects such as empty fields or character-anchored frames at the end of a paragraph are ignored. Example: "Peter$" matches only when the word "Peter" is the last word of a paragraph, note "Peter" cannot be followed by a period.</paragraph>
<paragraph xml-lang="en-US" id="par_id3152543" role="tablecontent">$ on its own matches the end of a paragraph. This way it is possible to search and replace paragraph breaks.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3156414" role="tablecontent" localize="false">*</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3155555" role="tablecontent">Zero or more of the regular expression term immediately preceding it. For example, "Ab*c" matches "Ac", "Abc", "Abbc", "Abbbc", and so on.
</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3147399" localize="false" role="tablecontent">+</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3157958" role="tablecontent">One or more of the regular expression term immediately preceding it. For example, "AX.+4" finds "AXx4", but not "AX4".</paragraph>
<paragraph xml-lang="en-US" id="par_id3145313" role="tablecontent">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.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3143267" localize="false" role="tablecontent">?</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3153684" role="tablecontent">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".</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3166410" localize="false" role="tablecontent">\</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3147209" role="tablecontent">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".</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3152945" localize="false" role="tablecontent">\n</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3153700" role="tablecontent">When entered in the <widget>Find</widget> text box, finds a line break that was inserted with the <keycode>Shift+Enter</keycode> key combination in Writer, or the <keycode>Ctrl+Enter</keycode> key combination in a Calc cell. </paragraph>
<paragraph role="tablecontent" id="par_id731559575258580">When entered in the <widget>Replace</widget> text box in Writer, inserts a paragraph break that can be inserted with the <keycode>Enter</keycode> or <keycode>Return</keycode> key. It has no special meaning in Calc, and is treated literally there.</paragraph>
<paragraph role="tablecontent" id="par_id631559575338134">To change line breaks into paragraph breaks in Writer, enter \n in both the <widget>Find</widget> and <widget>Replace</widget> boxes, and then perform a search and replace.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3153258" localize="false" role="tablecontent">\t</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3157809" role="tablecontent">A tab character. Can also be used in the <widget>Replace</widget> box.
</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3150670" localize="false" role="tablecontent">\b</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3153666" role="tablecontent">A word boundary. For example, "\bbook" matches "bookmark" and "book" but not "checkbook" whereas "book\b" matches "checkbook" and "book" but not "bookmark".</paragraph>
<paragraph role="tablecontent" id="par_id851559575484466">Note, this form replaces the obsolete (although they still work for now) forms "\>" (match end of word) and "\<" (match start of word).</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3149576" localize="false" role="tablecontent">^$</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3151245" role="tablecontent">Finds an empty paragraph.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3148550" localize="false" role="tablecontent">^.</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3159413" role="tablecontent">Finds the first character of a paragraph.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3147282" role="tablecontent">& or $0</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3153961" role="tablecontent">Adds the string that was found by the search criteria in the <widget>Find</widget> box to the term in the <widget>Replace</widget> box when you make a replacement.</paragraph>
<paragraph xml-lang="en-US" id="par_id3149650" role="tablecontent">For example, if you enter "window" in the <widget>Find</widget> box and "&frame" in the <widget>Replace</widget> box, the word "window" is replaced with "windowframe".</paragraph>
<paragraph xml-lang="en-US" id="par_id3150543" role="tablecontent">You can also enter an "&" in the <widget>Replace</widget> box to modify the <emph>Attributes</emph> or the <emph>Format</emph> of the string found by the search criteria.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3145419" localize="false" role="tablecontent">[...]</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3154630" role="tablecontent">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’.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3156293" localize="false" role="tablecontent">[^...]</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3149167" role="tablecontent">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’.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3156543" localize="false" role="tablecontent">\uXXXX</paragraph>
<paragraph id="par_id3156544" localize="false" role="tablecontent">\UXXXXXXXX</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3153768" role="tablecontent">The character represented by the four-digit hexadecimal Unicode code (XXXX).</paragraph>
<paragraph xml-lang="en-US" id="par_id3153769" role="tablecontent">The character represented by the eight-digit hexadecimal Unicode code (XXXXXXXX).</paragraph>
<paragraph xml-lang="en-US" id="par_id3159252" role="tablecontent">For certain symbol fonts the symbol (glyph) that you see on screen may look related to a different Unicode code than what is actually used for it in the font. The Unicode codes can be viewed by choosing <menuitem>Insert - Special Character</menuitem>, or by using <link href="text/shared/04/01010000.xhp#unicode_shortcut">Unicode conversion shortcut</link>.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3153951" localize="false" role="tablecontent">|</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3154985" role="tablecontent">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".</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3147376" localize="false" role="tablecontent">{N}</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3150103" role="tablecontent">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".</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3151289" localize="false" role="tablecontent">{N,M}</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3147317" role="tablecontent">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}" matches "tre" and "tree".</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id4870754" localize="false" role="tablecontent">{N,}</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id843836" role="tablecontent">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".</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3148616" localize="false" role="tablecontent">(...)</paragraph>
</tablecell>
<tablecell>
<paragraph role="paragraph" id="par_id91559576682961">The grouping construct that serves three purposes.</paragraph>
<list type="ordered">
<listitem>
<paragraph id="par_id871559576709007" role="listitem">To enclose a set of ‘|’ alternatives. For example, the regular expression "b(oo|ac)k" matches both "book" and "back".</paragraph>
</listitem>
<listitem>
<paragraph id="par_id891559576747109" role="listitem">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".</paragraph>
</listitem>
<listitem>
<paragraph id="par_id801559576780692" role="listitem">To record the matched sub string inside the parentheses as a reference for later use in the <widget>Find</widget> box using the "\n" construct or in the <widget>Replace</widget> box using the "$n" construct. The reference to the first match is represented by "\1" in the <widget>Find</widget> box and by "$1" in the <widget>Replace</widget> box. The reference to the second matched sub string by "\2" and "$2" respectively, and so on.</paragraph>
</listitem>
</list>
<paragraph role="paragraph" id="par_id951559576846997">For example, the regular expression "(890)7\1\1" matches "8907890890".</paragraph>
<paragraph role="paragraph" id="par_id561559576865734">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"</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3154790" localize="false" role="tablecontent">[:alpha:]</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3147397" role="tablecontent">Represents an alphabetic character. Use <emph>[:alpha:]</emph> to find one of them.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3152885" localize="false" role="tablecontent">[:digit:]</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3150010" role="tablecontent">Represents a decimal digit. Use <emph>[:digit:]</emph> to find one of them.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3153743" localize="false" role="tablecontent">[:alnum:]</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3153281" role="tablecontent">Represents an alphanumeric character ([:alpha:] and [:digit:]).</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3153726" localize="false" role="tablecontent">[:space:]</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3150961" role="tablecontent">Represents a space character (but not other whitespace characters).<comment>UFI: see #i41706#</comment></paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3150486" localize="false" role="tablecontent">[:print:]</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3150872" role="tablecontent">Represents a printable character.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3155854" localize="false" role="tablecontent">[:cntrl:]</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3152576" role="tablecontent">Represents a nonprinting character.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3149958" localize="false" role="tablecontent">[:lower:]</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3145730" role="tablecontent">Represents a lowercase character if <emph>Match case</emph> is selected in <emph>Options</emph>.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id3148455" localize="false" role="tablecontent">[:upper:]</paragraph>
</tablecell>
<tablecell>
<paragraph xml-lang="en-US" id="par_id3150092" role="tablecontent">Represents an uppercase character if <emph>Match case</emph> is selected in <emph>Options</emph>.</paragraph>
</tablecell>
</tablerow>
</table>
<paragraph xml-lang="en-US" id="par_id5311440" role="paragraph">For a full list of supported metacharacters and syntax, see <link href="https://unicode-org.github.io/icu/userguide/strings/regexp.html#regular-expression-metacharacters">ICU Regular Expressions documentation</link></paragraph>
<paragraph role="paragraph" id="par_id261559577375317">Regular expression terms can be combined to form complex and sophisticated regular expressions for searches as show in the following examples.</paragraph>
<h2 id="hd_id5311441">Examples</h2>
<table id="tab_id831559577400291">
<tablerow>
<tablecell>
<paragraph id="par_id901559577400292" role="tablehead">Expression</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id381559577400292" role="tablehead">Meaning</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id641559577400292" role="tablecontent" localize="false">^$</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id621559577542068" role="tablecontent">An empty paragraph.</paragraph>
<paragraph id="par_id311559577563701" role="tablecontent"><variable id="startpar">^ specifies that the match must be at the start of a paragraph,</variable></paragraph>
<paragraph id="par_id391559577592658" role="tablecontent"><variable id="endpar">$ specifies that a paragraph mark or the end of a cell must follow the matched string.</variable></paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id251559577837101" role="tablecontent" localize="false">^.</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id771559577837101" role="tablecontent">The first character of a paragraph.</paragraph>
<paragraph role="tablecontent" id="par_id871559577915900" localize="false"><embedvar href="text/shared/01/02100001.xhp#startpar" markup="ignore"/> </paragraph>
<paragraph role="tablecontent" id="par_id171559577924884">. specifies any single character.</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id721559577961403" role="tablecontent" localize="false">e([:digit:])?</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id471559577961403" role="tablecontent">Matches "e" by itself or an "e" followed by one digit.</paragraph>
<paragraph role="tablecontent" id="par_id421559578050163">e specifies the character "e",</paragraph>
<paragraph role="tablecontent" id="par_id591559578054502"><variable id="digit">[:digit:] specifies any decimal digit,</variable></paragraph>
<paragraph role="tablecontent" id="par_id341559578058972">? specifies zero or one occurrences of [:digit:].</paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id191559578087559" role="tablecontent" localize="false">^([:digit:])$</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id551559578087559" role="tablecontent" >Matches a paragraph or cells containing exactly one digit.</paragraph>
<paragraph role="tablecontent" id="par_id721559578137006" localize="false"><embedvar href="text/shared/01/02100001.xhp#startpar" markup="ignore"/></paragraph>
<paragraph role="tablecontent" id="par_id941559578151564" localize="false"><embedvar href="text/shared/01/02100001.xhp#digit" markup="ignore"/></paragraph>
<paragraph role="tablecontent" id="par_id791559578157006" localize="false"><embedvar href="text/shared/01/02100001.xhp#endpar" markup="ignore"/></paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id651559578184372" role="tablecontent" localize="false">^[:digit:]{3}$</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id771559578184372" role="tablecontent">Matches a paragraph or cell containing only three digit numbers</paragraph>
<paragraph role="tablecontent" id="par_id631559578489930" localize="false"><embedvar href="text/shared/01/02100001.xhp#startpar" markup="ignore"/></paragraph>
<paragraph role="tablecontent" id="par_id551559578496775" localize="false"><embedvar href="text/shared/01/02100001.xhp#digit"/></paragraph>
<paragraph role="tablecontent" id="par_id401559578501329">{3} specifies that [:digit:] must occur three times,</paragraph>
<paragraph role="tablecontent" id="par_id251559578508215" localize="false"><embedvar href="text/shared/01/02100001.xhp#endpar" markup="ignore"/></paragraph>
</tablecell>
</tablerow>
<tablerow>
<tablecell>
<paragraph id="par_id131559578728924" role="tablecontent">\bconst(itu|ruc)tion\b</paragraph>
</tablecell>
<tablecell>
<paragraph id="par_id891559578728925" role="tablecontent">Matches the words "constitution" and "construction" but not the word "constitutional."</paragraph>
<paragraph role="tablecontent" id="par_id381559578787403">\b specifies that the match must begin at a word boundary,</paragraph>
<paragraph role="tablecontent" id="par_id721559578792194">const specifies the characters "const",</paragraph>
<paragraph role="tablecontent" id="par_id941559578797721">( starts the group,</paragraph>
<paragraph role="tablecontent" id="par_id641559578802269">itu specifies the characters "itu",</paragraph>
<paragraph role="tablecontent" id="par_id271559578807054">| specifies the alternative,</paragraph>
<paragraph role="tablecontent" id="par_id801559578813944">ruc specifies the characters "ruc",</paragraph>
<paragraph role="tablecontent" id="par_id421559578820595">) ends the group,</paragraph>
<paragraph role="tablecontent" id="par_id621559578825464">tion specifies the characters "tion",</paragraph>
<paragraph role="tablecontent" id="par_id91559578832058">\b specifies that the match must end at a word boundary.</paragraph>
</tablecell>
</tablerow>
</table>
<section id="relatedtopics">
<embed href="text/shared/01/02100000.xhp#02100000"/>
<switch select="appl">
<case select="WRITER"><embed href="text/swriter/guide/search_regexp.xhp#search_regexp"/>
<embed href="text/swriter/guide/finding.xhp#finding"/>
</case>
</switch>
<paragraph xml-lang="en-US" id="par_id1751457" role="paragraph"><link href="https://wiki.documentfoundation.org/Documentation/How_Tos/Regular_Expressions_in_Writer">Wiki page about regular expressions in Writer</link></paragraph>
<paragraph xml-lang="en-US" id="par_id5483870" role="paragraph"><link href="https://wiki.documentfoundation.org/Documentation/How_Tos/Regular_Expressions_in_Calc">Wiki page about regular expressions in Calc</link></paragraph>
</section>
</body>
</helpdocument>
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