Using Regular Expressions in Text Searches

Regular expressions can be used to search for some unspecified or even invisible characters.

note

Searching with regular expressions is different from searching with wildcards. LibreOffice Writer only supports searching with regular expressions.


You can use regular expressions when you find and replace text in a document. For example, "s.n" finds "sun" and "son".

  1. Escolla <item type ="menuitem"> Editar - Localizar e substituír </ item>.

  2. Prema <item type ="menuitem"> Máis opcións </ item> para expandir a caixa de diálogo.

  3. Seleccione <item type ="menuitem"> As expresións regulares </ item> caixa de selección.

  4. In the Find box, type the search term and the regular expression(s) that you want to use in your search.

  5. Prema <item type ="menuitem">Atopar seguinte</ item> ou <item type ="menuitem">Atopar todo</ item>.

Exemplos de expresións regulares

  1. The regular expression for a single character is a period (.).

  2. The regular expression for zero or more occurrences of the previous character is an asterisk. For example: "123*" finds "12" "123", and "1233".

  3. The regular expression combination to search for zero or more occurrences of any character is a period and asterisk (.*).

  4. The regular expression for the end of a paragraph is a dollar sign ($). The regular expression character combination for the start of a paragraph is a caret and a period (^.).

  5. The regular expression for a tab character is \t.

Icona Nota

Unha investigación utilizando unha expresión regular funcionará só dentro dun parágrafo. Para buscar a usar unha expresión regular en máis dun parágrafo, faga unha busca separada en cada parágrafo.


Axúdenos, por favor!