You can use meta-characters in the 'Search For' field:
| . | any character except newline | + | one or more times | 
| * | zero or more times | ? | zero or one time | 
| {n} | match exact n times | {n,m} | at least n, at most m times | 
| | | pipe: a|b matches a or b | - | hyphen, match a range of chars | 
| ^ | beginning of a line | $ | end of a line | 
| [...] | one of the char's of a set | [^...] | negated character set | 
| \b | word boundary | \B | word non boundary | 
| \d | numeral [0-9] | \D | non numeral [^0-9] | 
| \s | single white space | \S | single non white space | 
| \w | [A-Za-z0-9_] | \W | [^A-Za-z0-9_] | 
| (...) | grouping are stored as $1..$9 | \. | escape a meta char | 
The 'Replace with' field can use $1..$9 as a backreference to parentheses of 'Search for' field.
Example:
Search for /abc|def/ will match the word 'abc' or the word 'def'
Search for  /bwiki/b will match the word 'wiki' but not the word 'jspwiki'.
Search for ^[IVXMDCL]+\. will match any combination of roman numeral char's followed by a period
Search for /(-?\d+)(\d{3})/ and replace with $1,$2 to insert commas in large integers. 
This is the EditFindAndReplaceHelp page. 
More info on regular expressions
and RegExp Sandbox
Add new attachment
Only authorized users are allowed to upload new attachments.
 
    
    «
    
    
      This particular version was published on 29-Apr-2006 22:21 by UnknownAuthor.