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. Scegliete Modifica - Trova e sostituisci.

  2. Fate clic su Altre opzioni per espandere la finestra di dialogo.

  3. Selezionate la casella di controllo Espressione regolare.

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

  5. Fate clic su Trova successivo o su Trova tutto.

Esempi di espressioni regolari

  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 di nota

Una ricerca fatta utilizzando un'espressione regolare avrà effetto soltanto all'interno di un singolo paragrafo. Per eseguire una ricerca attraverso un'espressione regolare in più di un paragrafo, avviate una ricerca separata per ogni paragrafo.