$0 is the regex for the find what text

$0 is the regex for the find what text

$0 is the regex for the findwhat text

$0 is the regex for the findwhattext

$0 is the regex for the found text 

$0 is the regex for the foundtext 

\0 is the regex for the find what text

\0 is the regex for the findwhat text

\0 is the regex for the findwhattext

\0 is the regex for the found text 

\0 is the regex for the foundtext 

 

 I dunno which one is worse at "monetizing" in other words Hiding and Obscuring USEFUL information. Go ahead, search for the regex for the find text, I dare you. Feel free to check on yandex baidu bing too just to see how horrible it is. 

\p{script=Han}

\p{Han}

\d

\{Latin} 

\s blank space

[^0-9] any digit

. any character

\w any alphanumeric

A paragraph break in the Search box is "$" but in the Replace box it is "\n".
You also mentioned "^." which means the first character of a paragraph and ".$" means the last character of a paragraph.
FWIW, "^$" means a blank paragraph.

When doing a "find and replace" operation with regular expressions, it is usually possible to use backreferences in the replacement string. This means that is is possible to include selected pieces of the original string in the replacement. This is actually the most interesting use of backreferences. In the replacement text, \0 can be used to represent the entire matched substring. (In some implementations, including Java's, backreferences in the replacement string are written as $0, $1, etc., instead of using "\".)

Either of the following two expressions find exactly three capital case alphabetical letters.

^([A-Z][A-Z][A-Z])$

^([A-Z]{3})$ 

In gedit [0-9] works no need to escape or string it

 $ matches empty paragraphs

 \ ) is the escaping character. It can be used to denote an escaped character, a string, literal, or one of the set of supported special characters.

=GOOGLETRANSLATE(A2, “en”,”es”) 

• ^ matches position just before the first character of the string
• $ matches position just after the last character of the string
• . matches a single character. Does not matter what character it is, except newline
• * matches preceding match zero or more times

• The . character means match any single character.

• The * character means match zero or more of the thing before me. For example, a* will match zero or more a characters. If you use .* then you will match zero or more of any characters, exactly the same as a single * would do in a wildcard expression.

• The + character means match one or more of the thing before me. a+ will match one or more a characters, but will not match if there are no a characters at all. .+ will match one or more of any characters.

• Remove the first 3 characters from the start of a filename:

  Old name: ...(.+)
  New name: \1

   

  Remove the last 3 characters from the end of the filename:

  The first thing you might try is this:

  Old name: (.+)...
  New name: \1
  Type: Regular Expressions