Mosh

A Fast R6RS Scheme interpreter.

News

• 2011/6/17 : 0.2.7 released mosh-0.2.7.tar.gz
• 2009/11/30 : Switched our code repository to github
• We switched only the repository, we continue to use Google code for distribution or issue tracking.

Features

• Mostly R6RS compliant scheme interpreter.
• Supports Linux, MacOS X, FreeBSD, NetBSD, Cygwin and Win32.
• FFI on x86/x64
• Many SRFIs and bundled libraries like irregex.
• Socket communication and POSIX process functions.
• ...

Source Code

https://github.com/higepon/mosh

Documents

• User's Manual
• Roadmap and Directions
• Developer's ML

Release Note

• 2011/6/17 : 0.2.7 released
• mosh-0.2.7.tar.gz
• Maintenance release.
• Mosh will be linked with OpenSSL library when available in Linux/FreeBSD/MacOSX.
• FFI API(pointer-ref-* and pointer-set-*! from (mosh ffi)) had changed.
• SRFI-19 implementation learned the leap second inserted between 2008 and 2009.
• nmosh user interface learned colour output. Set NMOSH_CLICOLOR environment variable to "enable" to enable this.
• Ruby's ERB like template library (Experimental).
• Facebook Graph API library (Experimental).
• make check target now works with out-of-tree builds.
• New Platform support :
• NetBSD (gcc44 is required and specify them as CC and CXX.)
• Wine 1.3 or later
• MonaOS
• Bug fixes :
• VM: apply didn't preserve tail-context. See  Issue 204 .
• psyntax-mosh: Various bug-fixes from Ikarus psyntax. See  Issue 134 .
• Reader: Number reader now reads 2.2250738585072012e-308 flawlessly. See http://blog.practical-scheme.net/gauche/20110203-bitten-by-floating-point-numbers-again for details.
• Reader: Fixed  Issue 178  reported by lp:~weinholt: A symbol immediately followed by string was not accepted by reader.
• Reader: Fixed  Issue 181  reported by mrc.mgg: Number datum with "bar" like 1|53 was not accepted by reader. Note that mosh will ignore specified mantissa width.
• Reader: Fixed  Issue 185  reported by mrc.mgg: SRFI-62 style datum comment was not accepted by reader in certain cases.
• REPL: Fixed  Issue 199  reported by amoebae: Segmentation fault on printing circular object.
• rnrs: Fixed  Issue 204 : call-with-values didn't preserve tail-context.
• rnrs: Fixed  Issue 183  and Issue 186 (partially): (display #\tab) had outputted "x9;" instead of a tab character. Non-displayable chars still not fixed. See Issue 186.
• rnrs: Fixed Issue 198 reported by amoebae (partially): put-string cannot be called during put-string of textual custom output port.
• rnrs: Fixed  Issue 200  reported by mrc.mgg: set-port-position! to the last index is now acceptable.
• rnrs: Fixed  Issue 195  reported by mrc.mgg: psyntax-mosh and nmosh had implemented SRFI-93 version of with-syntax. A patch for psyntax-mosh was contributed by amoebae.
• match: match couldn't match certain pattern.
• FFI (API Change): pointer-ref-* and pointer-set-*! index is now scaled by C sizeof(TYPE). i.e. (pointer-ref-c-pointer ptr num) is now eqv. of ptr[num]. These indices are erroneously scaled by 1(byte) in prior releases.
• nmosh: Native Win32 port was not able to remove directories.
• nmosh: Fixed  Issue 201  reported by mrc.mgg: assert was not return any value.
• nmosh: library-path procedure was not compatible with psyntax-mosh's one.
• SRFI-1: Fixed  Issue 192 : delete-duplicates now accepts (delete-duplicates obj) form.
• SRFI-19: Fixed  Issue 188 : SRFI-19 implementation now includes a leap second inserted in 2008-2009.
• SRFI-26: cut and cute was not work with <...>.
• SRFI-39: Fixed  Issue 184 : SRFI-39 now implemented with (rnrs) constructs. Former psyntax-mosh used psyntax's parameterize which was not compatible with SRFI-39.
• SRFI-42: string-ec, vector-of-length-ec and min-ec was not properly exported.

• 2010/11/7 : 0.2.6 released
• mosh-0.2.6.tar.gz
• Maintenace release.
• Starting from this release, Visual Studio builds are migrated to CMake.
• See doc/README.CMake for details.
• New build prerequisites:
• oniguruma >= 5.9.0
• CMake >= 2.8.0 (Windows, Visual Studio only)
• Oniguruma library is unbundled from mosh distribution. Configure script will search oniguruma with following order; 1) using onig-config' 2) using -lonig gcc option and user specified CFLAGS 3) if oniguruma source distribution is found in a subdir as named onig' it will be build together.
• Changes
• New platform support includes FFI support:
• Darwin x86_64
• FreeBSD amd64
• New platform support WITHOUT FFI support:
• Windows amd64 (Experimental)
• New build environment support:
• Visual Studio 2010 i386/amd64 (using CMake, experimental)
• XCode 3.x amd64 (using CMake, experimental)
• Now mosh REPL handles multiple-values like Gauche. When a procedure return multiple values, REPL will show each values unlike previous version (which discarded values other than the first.)
• FreeBSD:
• Use sysctl(3) to implement (mosh-executable-path) instead of procfs.
• Bug fixes
• (rnrs)
• exact-non-negative-integer? had retuned incorrect value.
• Fixed expt procedure bug reported by Eduardo Cavazos.
• Fixed  Issue 147  reported by mrc.mgg: log procedure had returned incorrect value.
• Fixed  Issue 148  reported by mrc.mgg: expt procedure is now much more faster than previous release. Now it uses GMP mpz_pow_ui when operands are fixnums.
• Fixed  Issue 149  reported by mrc.mgg: Reader now handles the "."(period) charactor collectly.
• Fixed  Issue 154  reported by tabe.fixedpoint: exact-integer-sqrt procedure now raises error when an inexact integer given.
• Fixed  Issue 159  : assoc procedure now checks argments are list of pairs. (assoc '(0)) no longer causes SEGV.
• Fixed  Issue 161  reported by tabe.fixedpoint: -(minus) procedure was returned 0 instead of raising an error when applied with 0 argument. Now (-) raises an &assertion error.
• Fixed  Issue 169  reported by ianprice90: Reading 0 elements from a port was resulting in an eof-object.
• Fixed  Issue 170  reported by ianprice90: Custom binary/text port's close procedure was not called.
• Fixed  Issue 173  reported by ianprice90: string->number was returned an EOF object on empty string.
• (mosh memcached)
• memcached-set! procedure now collectly sends flags and expiry arguments.
• (srfi :98)
• get-environment-variable and get-environment-variables had returned incollect results at MinGW/Cygwin environment.
• Core
• Fixed shebang handling bug reported by Eduardo Cavazos.
• Fixed  Issue 158 : nmosh was not started when $HOME is not set or has wrong value.
• Fixed  Issue 175  reported by marcomaggi: C procedures (DeclareProcedureName macro) was not set returning values count properly.
• Documentation
• Fixed  Issue 167  reported by amoebae: (mosh ffi) example was incorrect.
• Known issues:
• See http://code.google.com/p/mosh-scheme/issues/list for full list.
• configure script will complain about
• configure: WARNING: no configuration information is in libatomic_ops
• #t.BLAHBLAH... read as #t instead of raising error.
• Win32/64 Host:
• Win64 host support is experimental and lacks FFI support.
• "make check" or "make test" tests are not work properly.
• Visual Studio builds are suboptimal for performance due to absense of char32 support and the "computed goto"(used for direct-threading feature.)
• Visual Studio 2008 SP1 sometimes won't finish their compilation when both link-time code generation(/LTCG) and /Ox are enabled.
• mosh/nmosh cannot build using MinGW64.
• MacOS X Host:
• mosh/nmosh cannot build as an universal binary.
• Direct-threading is disabled on XCode builds. This will reduce runtime performance. Use ./configure builds for performance.

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