GNU Mailutils Manual (split by node):   Section:   Chapter:FastBack: Sieve Language   Up: Sieve Language   FastForward: Reporting Bugs   Contents: Table of ContentsIndex: Function Index

5.5 Comparators

GNU libmu_sieve supports the following built-in comparators:


This comparator simply compares the two arguments octet by octet


It treats uppercase and lowercase characters in the ASCII subset of UTF-8 as the same. This is the default comparator.


Treats the two arguments as ASCII representation of decimal numbers and compares their numeric values. This comparator must be explicitly required prior to use.