before_regex

{{before_regex text pattern flags="t"}}

Description

Returns a string which is the subset of text before the match to the regular expression pattern and not including the matched pattern itself.

If no matches to pattern are present in text, returns an empty string.

If pattern is empty or is an invalid regular expression, throws an exception.

Arguments

text

The input string.

pattern

A valid regular expression.

flags

• t trim the final result prior to returning (remove all whitespace from beginning and end)

Examples

For the following examples, assume that email.body contains:

This is red and that is blue and that is green.

Example 1: Return text before first match of pattern

{{before_regex email.body '/that/' flags='t'}}

The above example will output:

This is red and

Example 2: Return text before last match of pattern

{{before_regex email.body '/that/' flags='tr'}}

The above example will output:

This is red and that is blue and

Example 3: Return an empty string if no match of pattern

{{before_regex email.body '/pizza/' flags='t'}}

The above example will output: