| MAAllowed | Debian.Policy, Debian.Debianize |
| MAForeign | Debian.Policy, Debian.Debianize |
| Main | Debian.Policy, Debian.Debianize |
| MainSection | Debian.Policy, Debian.Debianize |
| maintainer | Debian.Debianize.SourceDebDescription, Debian.Debianize |
| maintainerOfLastResort | Debian.Policy |
| maintainerOption | Debian.Debianize.DebInfo, Debian.Debianize |
| makeDebInfo | Debian.Debianize.DebInfo, Debian.Debianize |
| makePackage | Debian.Debianize.VersionSplits |
| makePackageMap | Debian.Report |
| MANo | Debian.Policy, Debian.Debianize |
| mapCabal | Debian.Debianize.DebianName, Debian.Debianize |
| mapExn | Debian.Loc |
| mapMaybe | Data.Maybe.Extended |
| mapTree | Debian.Apt.Dependencies |
| MASame | Debian.Policy, Debian.Debianize |
| Maybe | Data.Maybe.Extended |
| maybe | Data.Maybe.Extended |
| maybeL | Debian.Debianize.Prelude |
| maybeLens | Debian.Debianize.Prelude |
| maybeRead | Debian.Debianize.Prelude |
| maybeToList | Data.Maybe.Extended |
| md5sum | Debian.Apt.Index |
| md5sumField | Debian.Control.Common |
| Media | Debian.Apt.Methods |
| MediaChanged | Debian.Apt.Methods |
| MediaFailure | Debian.Apt.Methods |
| mediaFailureCB | Debian.Apt.Methods |
| mergeChangelogEntries | Debian.Debianize.Changelog |
| mergeControls | Debian.Control.Common, Debian.Control.ByteString, Debian.Control.Text, Debian.Control.String, Debian.Control |
| Message | Debian.Apt.Methods |
| message | Debian.Apt.Methods |
| MissingDep | Debian.Apt.Dependencies |
| missingDependencies | Debian.Debianize.DebInfo, Debian.Debianize |
| MissingField | Debian.Control.Policy, Debian.Control |
| mkPkgName | Debian.Debianize.DebianName |
| mkPkgName' | Debian.Debianize.DebianName |
| mkSearchTree | Debian.Apt.Dependencies |
| mkTree | Debian.Apt.Dependencies |
| modifyField | Debian.Control.Common, Debian.Control.ByteString, Debian.Control.Text, Debian.Control.String, Debian.Control |
| modifyFile | Debian.Debianize.Prelude |
| modifyM | Debian.Debianize.Prelude |
| MPL | Debian.Policy, Debian.Debianize |
| MultiArch | Debian.Policy, Debian.Debianize |
| multiArch | Debian.Debianize.BinaryDebDescription, Debian.Debianize |