Función EXP.REG

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# EXP.REG

Encuentra y extrae, u opcionalmente reemplaza, texto, con ayuda de expresiones regulares.

Esta función está disponible desde LibreOffice 6.2

### Sintaxis

REGEX( Text ; Expression [ ; [ Replacement ] [ ; Flags|Occurrence ] ] )

Text: A text or reference to a cell where the regular expression is to be applied.

Expresión: un texto que constituye la expresión regular mediante la sintaxis de ICU. Si no se produce ninguna coincidencia y no se especifica Reemplazo, se devuelve #N/D.

Replacement: Optional. The replacement text and references to capture groups. If there is no match, Text is returned unmodified.

Flags: Optional. "g" replaces all matches of Expression in Text, not extracted. If there is no match, Text is returned unmodified.

Occurrence: Optional. Number to indicate which match of Expression in Text is to be extracted or replaced. If there is no match and Replacement is not given, #N/A is returned. If there is no match and Replacement is given, Text is returned unmodified. If Occurrence is 0, Text is returned unmodified.

### Ejemplos

=REGEX("123456ABCDEF";"[:digit:]";"Z") returns "Z23456ABCDEF", where the first match of a digit is replaced by "Z".

=REGEX("123456ABCDEF";"[:digit:]";"Z";"g") returns "ZZZZZZABCDEF", where all digits were replaced by "Z".

=REGEX("123456ABCDEF";"[126]";"";"g") returns "345ABCDEF", where any occurrence of "1", "2" or "6" is replaced by the empty string, thus deleted.

=REGEX("axbxcxd";".x";;2) returns "bx", the second match of ".x".

=REGEX("axbxcxd";"(.)x";"$1y";2) returns "axbycxd", the second match of "(.)x" (i.e. "bx") replaced with the captured group of one character (i.e. "b") followed by "y".

Temas relacionados

Lista de expresiones regulares

Expresiones regulares de ICU (en inglés)