filter_overlap

<p>Matrix of gregexpr results, 4 columns, index of column matched,
start of match, length of match, end of match. Produced exclusively from
a worker function in mgsub</p>

<p>Helper function used to identify which results from gregexpr
overlap other matches and filter out shorter, overlapped results</p>

Designed to enable simultaneous substitution in strings in a safe fashion.
Safe means it does not rely on placeholders (which can cause errors in same length matches).

Mark Ewing

filter_overlap: Filter overlaps from matches

Description

Usage

Arguments