### Order of Precedence in Basic Regular Expressions

Like C and C++ operators, the Regular Expression syntax specifiers are processed in a specific order. The order of precedence for Basic Regular Expressions is described below, from highest to lowest priority. The specifiers in each category are also listed in order of precedence.

Syntax Specifiers | Precedence
--- | ---
Collation-related bracket symbols | [==] [::] [..]
Special characters | \spec_char
Bracket expressions | [ ]
Subexpressions and backreferences | \(\) \n
Repetition | * \{m\} \{m,\} \{m,n\}
Concatenation |
Anchoring | ^ $

Regular Expressions