rindex - right-to-left substring search

- NAME
- SYNOPSIS
- DESCRIPTION

# NAME

rindex - right-to-left substring search

# SYNOPSIS

rindex STR,SUBSTR,POSITION

rindex STR,SUBSTR

# DESCRIPTION

Works just like `index()` except that it returns the position of the last occurrence of SUBSTR in STR. If POSITION is specified, returns the last occurrence beginning at or before that position.

rindex - right-to-left substring search