Conformance Clause

Conformance Policy

FreeM attempts to comply with ANSI X11.1-1995 and the unpublished Millennium Draft Standard (MDS) from the MUMPS Development Committee, in routine buffers where the dialect setting is set to a particular version of the standard.

Routine buffers in FREEM dialect enable all nonstandard extensions.

This article attempts to track missing and/or nonstandard features in the current main branch of FreeM. It is a work-in-progress.

Indirection

FreeM supports several forms of indirection that are nonstandard, as well as allowing indirection in several constructs where the standard prohibits it. Below is a list of some known instances of idiosyncratic indirection; please note that this list is by no means comprehensive:

• FOR loops in FreeM support argument indirection
• FreeM supports list indirection, such as S X="1,2,3",ARGS="X,"","",2" W $P(@ARGS), which will output 2

MERGE

• MERGE should be implemented as M[ERGE] postcond SP L mergeargument, but is currently implemented as M[ERGE] postcond SP mergeargument

KVALUE/KSUBSCRIPTS

• Only the inclusive forms of these commands are currently implemented

Transaction Processing

• Restartable transactions are not complete

Event Processing

• ETRIGGER is not yet implemented
• Of the event classes defined in the MDS, only the INTERRUPT evclass is implemented
• The TRIGGER 'evclass' is nonstandard
• The ^$EVENT SSVN is incomplete
• Environment-wide events defined in ^$SYSTEM are nonstandard

Routines

• Dotted routine names are nonstandard

Miscellaneous Language Features

• ASSERT is nonstandard
• WITH and USING are nonstandard
• CONST is nonstandard
• MAP is nonstandard
• WATCH is nonstandard
• THROW is nonstandard
• $DIALECT is nonstandard