This release incudes further additions to the Basis Library and many bug fixes. As did 110.79, it includes some initial support for Successor ML, which is an evolution of the Standard ML language. It also has support for the upcoming version of macOS Sierra.
This version continues to track proposed Basis Library improvements. Note that these improvements are proposals that have not yet been ratified and are subject to change! Specifically, the following proposals are supported by this version of SML/NJ:
It is very unlikely that these changes will break existing code, but there are a couple of scenarios in which the code might break. The first is conflicts created by the use of open. For example, the implementation of ml-yacc had declarations of the form
which created a type error because List.sub shadowed Array.sub.
The second class of problem is when a module implements one of the affected Basis signatures. For example, the MLRISC library had two modules that implemented extensions of the ARRAY signature and which required modification to compile.
In such cases, we recommend updating the source code, but it is also possible to compile against the old version of the Basis Library by changing the line
in your CM files. Note that backward-compatible version of the Basis Library is only available if the old-basis target in config/targets was requested when SML/NJ was built (this target is requested by default).
Successor ML is collection of proposed enhancements to the Standard ML language. In collaboration with the MLton implementors, we are starting to add support for these features the SML/NJ. This release does not include any new features over what was supported in version 110.79 (i.e., lexical extensions). We plan to start adding syntactic extensions to the core language in the next release.
The Successor ML features can be enabled using the command-line option -Cparser.succ-ml=true or by using the assignment
at the REPL. There is a known bug (#153) that you man encounter when enabling Successor ML features from the REPL; namely, there is some latency from when you set the Control.succML flag and when the lexer switches mode.
It is also possible to mark individual source files as being "Successor ML" sources in a CM file. There are several ways to do so; the easiest is to specify that they should be handled by the "succ-ml" tool:
Alternatively, one can give the "succ-ml" argument to the "sml" tool:
It is also possible to enable them by setting the control flag using the with keyword in a CM file as illustrated by the following equivalent forms:
A number of changes to the ORD_SET signature. The following functions were added:
In addition, the function listItems is now considered deprecated.
Added the function Controls.help for getting the help string from a control.
Added the functions mkOption, mkOptionReqArg, and mkOptionFlag to the Controls module. These functions make it easier to package controls as command-line options. They provide an alternative to the usual approach of using a "--C<ctl>=<value>" form for all of the controls.
Fixed a bug (#144) in the implementation of the all function in the splay-tree implementation of sets (functor SplaySetFn).
Fixed a bug (#167) in the way that the GetOpt module handles long arguments. Previously, it was not possible to have one long argument that was a prefix of another (e.g., "--foo" and "--foobar"). The new behavior is to allow long-option prefixes to overlap with other long options, but to favor an exact match over prefix matches. For example, if the long options are "--foo," "--foobar," and "--foobaz," then "--foo" will match the first, but "--foob" will be flagged as ambiguous.
Here is a list of tracked bugs fixed (or closed) with this release, please see the bug tracker for more details.
|Splay sets are broken
|Internal exception occurs on bogus annotation instead of typechecking diagnostic
|Problems building on recent versions of 64-bit Ubuntu
|Hexadecimal escapes in strings are not supported
|Add title to batch script
|Error installing from source on Mac OS X
|Return code for ml-ulex when there is an error
|Misleading printing of word literals in error messages
|SML resumes after SIGSTOP with bogus exception report
|MLRISC incorrect dividend sign extension before 32-bit divide in x86_64
|Inaccurate install instructions, ia32-libs have been deprecated
|Can't install SML/NJ in directories containing spaces
|Bug in handling of long options in GetOpt
The following unnumbered bugs were also fixed:
We have verified that the system builds and runs on the following systems.
Architecture Operating System PowerPC Mac OS X 10.5 (Leopard) x86 Mac OS X 10.6 (Snow Leopard) Mac OS X 10.7 (Lion) Mac OS X 10.8 (Mountain Lion) Mac OS X 10.9 (Mavericks) Mac OS X 10.10 (Yosemite) Mac OS X 10.11 (El Capitan) macOS Sierra Ubuntu 14.04.3 (GNU/Linux 3.13.0) Windows 7 Cygwin (hosted on Windows 7)
We believe that it runs on any recent Linux distribution that has support for 32-bit executables, as well as on BSD variants, SPARC/Solaris, and PPC/AIX, but we have not tested these systems.