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
Screen captures are meant to be indicative of the concept being presented and may not reflect the current screen design.
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