A regular expression search and replace on a variable. Use the RegExp from JavaScript.

Only modifiers (flags) 'i' and 'm' are supported in this version.

Backslashes should be escaped e.g. \s

    {$foo = bar}
    {$foo|regex_replace:'/b/':'z'}   //zar

Note:- Although jSmart supplies this regex convenience modifier, it is usually better to apply regular expressions in JavaScript, either via custom functions or modifiers. Regular expressions are considered application code and are not part of presentation logic.

Template:

{$articleTitle = 'Infertility unlikely to\nbe passed on, experts say'}

{* replace each carriage return, tab and new line with a space *}
{$articleTitle}
{$articleTitle|regex_replace:"/[\r\t\n]/":" "}

output:

Infertility unlikely to
be passed on, experts say.
Infertility unlikely to be passed on, experts say.

see also regex_replace in PHP Smarty documentation.