Module expr 

Enums

ExprError

Errors that can occur during expression evaluation.

ExprValue

A value produced by evaluating an expr expression.

Constants

EXIT_EXPR_ERROR

Exit code: expression is syntactically invalid.

EXIT_FAILURE

Exit code: expression is null or zero.

EXIT_REGEX_ERROR

Exit code: regex error.

EXIT_SUCCESS

Exit code: expression is non-null and non-zero.

Functions

evaluate_expr

Evaluate an expr expression from command-line arguments.