\r is carriage return
^ is start of line
$ end of line or string (a \n comes after the end of the lin: $\n)
Example to find all blank lines:
^\s*$\n
Example replace , newline with , space
Search: ,\n
Replace: ,
When you search for metacharacters such as .[{()\^$|?*+, you need to escape them with backslash (\) so they can be recognized.
Use regex capturing groups and backreferences
In the search field, enter parentheses () that would indicate a capturing group, for example:\stitle="(.*)?"\s*(/>*)
In the replace field, backreference such groups by numbers starting with 1, for example:
$2<title>$1</title>
Switch the character case in the replace statement
In the replace field, depending on what you want to achieve, for example /U$1.Enter one of the following syntax:
- \l changes a character to lowercase until the next character in the string.
- For example, Bar becomes bar.
- \u changes a character to uppercase until the next character in the string.
- For example, bar becomes Bar.
- \L changes characters to lowercase until the end of the literal string (\E).
- For example, BAR becomes bar.
- \U changes characters to uppercase until the end of the literal string (\E).
- For example, bar becomes BAR.
