Regex: Difference between revisions

|! Metacharacters Defined ||!! Metacharacter Examples

| (...) || Logical grouping of part of an expression. || (abc){2} || abcabc

| * || 0 or more of previous expression. || ab*c || ac, abc, abbc, abbbc, ...

| + || 1 or more of previous expression. || ab+c || abc, abbc, abbbc, ...

| ? || 0 or 1 of previous expression; also forces minimal matching when an expression might match several strings within a search string. || ab?c || ac, abc

| \ || Preceding one of the above, it makes it a literal instead of a special character. Preceding a special matching character, see below. || a\sc || a c

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