Standard Module regsub

regsub This module defines a number of functions useful for working with regular expressions (see built-in module regex).
\begin{funcdesc}{sub}{pat\, repl\, str} Replace the first occurrence of pattern ... ...ces \samp{\e \var{digit}} to subpatterns and escaped backslashes. \end{funcdesc}

\begin{funcdesc}{gsub}{pat\, repl\, str} Replace all (non-overlapping) occurrenc... ...ch, so e.g. \code{gsub('', '-', 'abc')} returns \code{'-a-b-c-'}. \end{funcdesc}

\begin{funcdesc}{split}{str\, pat} Split the string \var{str} in fields separate... ...e{['a', 'b']} and \code{split('abc', '')} returns \code{['abc']}. \end{funcdesc}