Having lines like:
Para 1
Para 2 Line 1<shift+enter>
Para 2 Line 2
Para 3
A single $ _as an OOo-specific exception to the rule_ matches a
paragraph break itself.
But in general $ marks the position behind the last char in a line, not
including any char.
In other words: $ marks the position where you get hitting the End-key,
^ marks the position where you get hitting the Pos1-key.
^P.+[0-9]$ matches a "P" *behind* the start of line(^P), followed by at
least 1 any-char (.+), followed by a digit *before* the end of
line([0-9]$. When you replace this with something the line-breaks are
untouched.
A single ^ as search-expression never matches anything.
& and \n seem to be the only regex-symbols allowed in replace-expressions.
The following paragraph from the infamous list of OOo-regexes is unclear
about that and the last sentence is plain wrong:
$ This symbol represents the paragraph mark for use in a regular expression.
For example,
using $ will only find the search term if it appears at the end of a
paragraph. So, if one
searches for, say, Peter at the end of a paragraph, enter Peter$ in the
Search for box.
Special characters (for example, blank spaces and character-anchored frames)
at the end
of a paragraph are ignored.
Add a space at the end of a line. It won't be ignored by ^P.+[0-9]$
\n matches a line break in search-context, but it is a paragraph break
in replace-context. Another expression matching a line break is \x000A
(hexadecimal 10), which comes in handy if you like to match only this
kind of lines.
Beware of named character classes [:digit:], [:alnum:] and alike. They
are slightly broken by OOo-design.
According to the rules ' [0-9]'(leading space) matches a space, followed
by a single digit, whereas ' [:digit:]' does not match anything at all.
' [0-9]? matches a space, followed by one optional single digit and so
does ' [:digit:]
As far as I can tell, named character classes fail if they are the only
or the last element of a regex. This is an accepted issue, targeted for
OOo3.
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