Regex Tester & Validator

This regex matches three alternatives: a run of one or more non-tab characters ending in whitespace, a single tab character, or a word character at the end of a line. With the global and multiline flags enabled, it processes each line of a tab-separated text file independently, capturing content segments and tab delimiters. It is useful for splitting or selecting subgroups of fields from TSV or tab-delimited .txt files.