Steinberg WAVELAB 8.5 RETAIL SOFTWARE 45370 数据表

0 or 1 match (1 if 
possible)

?

Matches 0 or 1 time the preceding expression. 1 
repeat if possible is grabbed, then the rest of the 
regular expression continues to be evaluated.

0 or 1 match (0 if 
possible)

??

Matches 0 or 1 time the preceding expression. 0 
repeat if possible (the NEXT step in the regular 
expression is also evaluated and has priority).

0 or more 
matches (as many 
as possible)

*

Matches 0 or more times the preceding expression. 
As many repeats as possible are grabbed, then the 
rest of the regular expression continues to be 
evaluated.

0 or more 
matches (as few 
as possible)

*?

Matches 0 or more times the preceding expression. 
As few repeats as possible are grabbed (the NEXT 
step in the regular expression is also evaluated and 
has priority).

1 or more 
matches (as many 
as possible)

+

Matches 1 or more times the preceding expression. 
As many repeats as possible are grabbed, then the 
rest of the regular expression continues to be 
evaluated.

1 or more 
matches (as few 
as possible)

+?

Matches 1 or more times the preceding expression. 
As few repeats as possible are grabbed (the next 
step in the regular expression is also evaluated and 
has priority).

Or

|

OR operator. Use this to separate two expressions 
and to match expression #1 or expression #2. For 
example, Piano|Drum matches all texts that contain 
Piano or Drum.

Not

!

Negation operator: the expression following ! must 
not match the text. For example, a!b matches any “a” 
not followed by “b”.

Generic group

()

Grouping operator. Useful to form a sub-expression.

Capture

{}

Capture operator. By default, the found text 
corresponds to the entire regular expression. But it 
is possible to limit a part of the regular expression 
with { }, and if a part is matched, this will be the 
retained part. For instance the regular expression 
“ab{cd}ef” that is applied on “abcdef” will return 
“cd”.

Beginning of text

^

Use the circumflex sign to specify that the text must 
be located at the start of the browsed text. Any 
match not located at the start of the browsed text is 
ignored.