Match a set of regular expressions to a list of files and return those filenames that comply to any of the provided regular expressions. This function basically wraps a grep to make it work on vectors by combining the vector of regex options as possible options.
match_filenames(file_list, regex_list)character vector. Haystack of filenames/filepaths.
character vector. Needle of regular expressions to which filenames should comply.
character vector. Subset of filenames from the file_list that comply to the provided regular expressions in regex_list.