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

REGEX(Text;Expression) extracts the first match of Expression in
Text. If there is no match, #N/A is returned.

REGEX(Text;Expression;Replacement) replaces the first match of
Expression in Text, not extracted. If there is no match, Text is
returned unmodified.

REGEX(Text;Expression;Replacement;"g") replaces all matches of
Expression in Text with Replacement, not extracted. If there is no
match, Text is returned unmodified.

REGEX(Text;Expression;;Occurrence) extracts the n-th match of
Expression in Text. If there is no n-th match, #N/A is returned.
If Occurrence is 0, Text is returned unmodified.

REGEX(Text;Expression;Replacement;Occurrence) replaces the n-th
match of Expression in Text with Replacement, not extracted. If
there is no n-th match, Text is returned unmodified. If Occurrence
is 0, Text is returned unmodified.

Change-Id: Iadb705e4c76415c57bf510489410ec029344cca7
Reviewed-on: https://gerrit.libreoffice.org/64199Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins
(cherry picked from commit e3af4947)
Reviewed-on: https://gerrit.libreoffice.org/64219