# string-unescape - expand escape sequences

## Synopsis

    string escape [(-n | --no-quoted)] [--style=xxx] [STRING...]
    string unescape [--style=xxx] [STRING...]

## Description

`string escape` escapes each STRING in one of three ways. The first is `--style=script`. This is the default. It alters the string such that it can be passed back to `eval` to produce the original argument again. By default, all special characters are escaped, and quotes are used to simplify the output when possible. If `-n` or `--no-quoted` is given, the simplifying quoted format is not used. Exit status: 0 if at least one string was escaped, or 1 otherwise.

`--style=var` ensures the string can be used as a variable name by hex encoding any non-alphanumeric characters. The string is first converted to UTF-8 before being encoded.

`--style=url` ensures the string can be used as a URL by hex encoding any character which is not legal in a URL. The string is first converted to UTF-8 before being encoded.

`--style=regex` escapes an input string for literal matching within a regex expression. The string is first converted to UTF-8 before being encoded.

`string unescape` performs the inverse of the `string escape` command. If the string to be unescaped is not properly formatted it is ignored. For example, doing `string unescape --style=var (string escape --style=var $str)` will return the original string. There is no support for unescaping `--style=regex`.

## Examples

    >_ echo \\x07 | string escape
    cg

    >_ string escape --style=var 'a1 b2'\\u6161
    a1_20b2__c_E6_85_A1