Import Upstream version 5d6upstream/5d6

1 files changed, 188 insertions, 196 deletions

diff --git a/README b/README
index f981fd9..4cadd59 100644
--- a/README
+++ b/README
@@ -1,90 +1,93 @@
-This directory contains the distribution of scm5d2.  Scm conforms to
+This directory contains the distribution of scm5d6.  Scm conforms to
 Revised^5 Report on the Algorithmic Language Scheme and the IEEE P1178
 specification. SCM runs under Amiga, Atari-ST, MacOS, MS-DOS, OS/2,
 NOS/VE, Unicos, VMS, Unix and similar systems.
 
-             `http://swissnet.ai.mit.edu/~jaffer/SCM.html'
+             <http://swissnet.ai.mit.edu/~jaffer/SCM.html>
 
 Manifest
 ========
 
-`.gdbinit'       provides commands for debugging SCM with GDB             
-`COPYING'        details the LACK OF WARRANTY for SCM and the conditions  
-                 for distributing SCM.                                    
-`ChangeLog'      changes to SCM.                                          
-`Iedline.scm'    Gnu readline input editing.                              
-`Init.scm'       Scheme initialization.                                   
-`Link.scm'       compiles and dynamically links.                          
-`Macro.scm'      Supports Syntax-Rules Macros.                            
-`Makefile'       builds SCMLIT using the `make' program.                  
-`QUICKREF'       Quick Reference card for R4RS and IEEE Scheme.           
-`README'         contains a MANIFEST, INSTALLATION INSTRUCTIONS, hints    
-                 for EDITING SCHEME CODE, and a TROUBLE SHOOTING GUIDE.   
-`Transcen.scm'   inexact builtin procedures.                              
-`bench.scm'      computes and records performance statistics of pi.scm.   
-`build.bat'      invokes build.scm for MS-DOS                             
-`build.scm'      database for compiling and linking new SCM programs.     
-`continue.c'     continuations.                                           
-`continue.h'     continuations.                                           
-`crs.c'          interactive terminal control.                            
-`dynl.c'         dynamically load object files.                           
-`ecrt0.c'        discover the start of initialized data space             
-                 dynamically at runtime.                                  
-`edline.c'       Gnu readline input editing (get                          
-                 ftp.sys.toronto.edu:/pub/rc/editline.shar).              
-`eval.c'         evaluator, apply, map, and foreach.                      
-`example.scm'    example from R4RS which uses inexact numbers.            
-`findexec.c'     find the executable file function.                       
-`gmalloc.c'      Gnu malloc(); used for unexec.                           
-`gsubr.c'        make_gsubr for arbitrary (< 11) arguments to C           
-                 functions.                                               
-`ioext.c'        system calls in common between PC compilers and unix.    
-`mkimpcat.scm'   build SCM-specific catalog for SLIB.                     
-`patchlvl.h'     patchlevel of this release.                              
-`pi.c'           computes digits of pi [cc -o pi pi.c;time pi 100 5].     
-`pi.scm'         computes digits of pi [type (pi 100 5)].  Test           
-                 performance against pi.c.                                
-`posix.c'        posix library interface.                                 
-`pre-crt0.c'     loaded before crt0.o on machines which do not remap      
-                 part of the data space into text space in unexec.        
-`r4rstest.scm'   tests conformance with Scheme specifications.            
-`ramap.c'        array mapping                                            
-`record.c'       proposed `Record' user definable datatypes.              
-`repl.c'         error, read-eval-print loop, read, write and load.       
-`rgx.c'          string regular expression match.                         
-`rope.c'         C interface functions.                                   
-`sc2.c'          procedures from R2RS and R3RS not in R4RS.               
-`scl.c'          inexact arithmetic                                       
-`scm.1'          unix style man page.                                     
-`scm.c'          initialization, interrupts, and non-IEEE utility         
-                 functions.                                               
-`scm.doc'        man page generated from scm.1.                           
-`scm.h'          data type and external definitions of SCM.               
-`scm.texi'       SCM installation and use.                                
-`scmfig.h'       contains system dependent definitions.                   
-`scmmain.c'      initialization, interrupts, and non-IEEE utility         
-                 functions.                                               
-`script.c'       utilities for running as `#!' script.                    
-`setjump.h'      continuations, stacks, and memory allocation.            
-`setjump.mar'    provides setjump and longjump which do not use $unwind   
-                 utility on VMS.                                          
-`setjump.s'      provides setjump and longjump for the Cray YMP.          
-`socket.c'       BSD socket interface.                                    
-`split.scm'      example use of crs.c.  Input, output, and diagnostic     
-                 output directed to separate windows.                     
-`subr.c'         the rest of IEEE functions.                              
-`sys.c'          call-with-current-continuation, opening and closing      
-                 files, storage allocation and garbage collection.        
-`time.c'         functions dealing with time.                             
-`ugsetjump.s'    provides setjump and longjump which work on Ultrix VAX.  
-`unexalpha.c'    Convert a running program into an Alpha executable file. 
-`unexec.c'       Convert a running program into an executable file.       
-`unexelf.c'      Convert a running ELF program into an executable file.   
-`unexhp9k800.c'  Convert a running HP-UX program into an executable file. 
-`unexsgi.c'      Convert a running program into an IRIX executable file.  
-`unexsunos4.c'   Convert a running program into an executable file.       
-`unif.c'         uniform vectors.                                         
-`unix.c'         non-posix system calls on unix systems.                  
+`.gdbinit'       provides commands for debugging SCM with GDB
+`COPYING'        details the LACK OF WARRANTY for SCM and the conditions
+                 for distributing SCM.
+`ChangeLog'      changes to SCM.
+`Iedline.scm'    Gnu readline input editing.
+`Init.scm'       Scheme initialization.
+`Link.scm'       Dynamic link/loading.
+`Macro.scm'      Supports Syntax-Rules Macros.
+`Makefile'       builds SCMLIT using the `make' program.
+`QUICKREF'       Quick Reference card for R4RS and IEEE Scheme.
+`README'         contains a MANIFEST, INSTALLATION INSTRUCTIONS, hints
+                 for EDITING SCHEME CODE, and a TROUBLE SHOOTING GUIDE.
+`Transcen.scm'   inexact builtin procedures.
+`bench.scm'      computes and records performance statistics of pi.scm.
+`build.bat'      invokes build.scm for MS-DOS
+`build.scm'      database for compiling and linking new SCM programs.
+`compile.scm'    Hobbit compilation to C.
+`continue.c'     continuations.
+`continue.h'     continuations.
+`crs.c'          interactive terminal control.
+`debug.c'        debugging, printing code.
+`dynl.c'         dynamically load object files.
+`ecrt0.c'        discover the start of initialized data space
+                 dynamically at runtime.
+`edline.c'       Gnu readline input editing (get
+                 ftp.sys.toronto.edu:/pub/rc/editline.shar).
+`eval.c'         evaluator, apply, map, and foreach.
+`example.scm'    example from R4RS which uses inexact numbers.
+`findexec.c'     find the executable file function.
+`gmalloc.c'      Gnu malloc(); used for unexec.
+`gsubr.c'        make_gsubr for arbitrary (< 11) arguments to C
+                 functions.
+`ioext.c'        system calls in common between PC compilers and unix.
+`mkimpcat.scm'   build SCM-specific catalog for SLIB.
+`patchlvl.h'     patchlevel of this release.
+`pi.c'           computes digits of pi [cc -o pi pi.c;time pi 100 5].
+`pi.scm'         computes digits of pi [type (pi 100 5)].  Test
+                 performance against pi.c.
+`posix.c'        posix library interface.
+`pre-crt0.c'     loaded before crt0.o on machines which do not remap
+                 part of the data space into text space in unexec.
+`r4rstest.scm'   tests conformance with Scheme specifications.
+`ramap.c'        array mapping
+`record.c'       proposed `Record' user definable datatypes.
+`repl.c'         error, read-eval-print loop, read, write and load.
+`rgx.c'          string regular expression match.
+`rope.c'         C interface functions.
+`sc2.c'          procedures from R2RS and R3RS not in R4RS.
+`scl.c'          inexact arithmetic
+`scm.1'          unix style man page.
+`scm.c'          initialization, interrupts, and non-IEEE utility
+                 functions.
+`scm.doc'        man page generated from scm.1.
+`scm.h'          data type and external definitions of SCM.
+`scm.texi'       SCM installation and use.
+`scmfig.h'       contains system dependent definitions.
+`scmmain.c'      initialization, interrupts, and non-IEEE utility
+                 functions.
+`script.c'       utilities for running as `#!' script.
+`setjump.h'      continuations, stacks, and memory allocation.
+`setjump.mar'    provides setjump and longjump which do not use $unwind
+                 utility on VMS.
+`setjump.s'      provides setjump and longjump for the Cray YMP.
+`socket.c'       BSD socket interface.
+`split.scm'      example use of crs.c.  Input, output, and diagnostic
+                 output directed to separate windows.
+`subr.c'         the rest of IEEE functions.
+`sys.c'          call-with-current-continuation, opening and closing
+                 files, storage allocation and garbage collection.
+`time.c'         functions dealing with time.
+`ugsetjump.s'    provides setjump and longjump which work on Ultrix VAX.
+`unexalpha.c'    Convert a running program into an Alpha executable file.
+`unexec.c'       Convert a running program into an executable file.
+`unexelf.c'      Convert a running ELF program into an executable file.
+`unexhp9k800.c'  Convert a running HP-UX program into an executable file.
+`unexsgi.c'      Convert a running program into an IRIX executable file.
+`unexsunos4.c'   Convert a running program into an executable file.
+`unif.c'         uniform vectors.
+`unix.c'         non-posix system calls on unix systems.
+
 
 
 File: scm.info,  Node: SLIB,  Next: Building SCM,  Prev: Making SCM,  Up: Installing SCM
@@ -94,22 +97,22 @@ SLIB
 
 [SLIB] is a portable Scheme library meant to provide compatibility and
 utility functions for all standard Scheme implementations.  Although
-SLIB is not *neccessary* to run SCM, I strongly suggest you obtain and
+SLIB is not _neccessary_ to run SCM, I strongly suggest you obtain and
 install it.  Bug reports about running SCM without SLIB have very low
 priority.  SLIB is available from the same sites as SCM:
 
-   * swissnet.ai.mit.edu:/pub/scm/slib2c7.tar.gz
+   * swissnet.ai.mit.edu:/pub/scm/slib2d4.tar.gz
 
-   * ftp.gnu.org:/pub/gnu/jacal/slib2c7.tar.gz
+   * ftp.gnu.org:/pub/gnu/jacal/slib2d4.tar.gz
 
-   * ftp.cs.indiana.edu:/pub/scheme-repository/imp/slib2c7.tar.gz
+   * ftp.cs.indiana.edu:/pub/scheme-repository/imp/slib2d4.tar.gz
 
-Unpack SLIB (`tar xzf slib2c7.tar.gz' or `unzip -ao slib2c7.zip') in an
+Unpack SLIB (`tar xzf slib2d4.tar.gz' or `unzip -ao slib2d4.zip') in an
 appropriate directory for your system; both `tar' and `unzip' will
 create the directory `slib'.
 
 Then create a file `require.scm' in the SCM "implementation-vicinity"
-(this is the same directory as where the file `Init5d2.scm' is
+(this is the same directory as where the file `Init5d6.scm' is
 installed).  `require.scm' should have the contents:
 
      (define (library-vicinity) "/usr/local/lib/slib/")
@@ -140,36 +143,25 @@ Making SCM
 ==========
 
 The SCM distribution has "Makefile" which contains rules for making
-"scmlit", a "bare-bones" version of SCM sufficient for running
-`build.scm'.  `build.scm' is used to compile (or create scripts to
-compile) full featured versions.
+"scmlit", a "bare-bones" version of SCM sufficient for running `build'.
+`build' is used to compile (or create scripts to compile) full
+featured versions.
 
 Makefiles are not portable to the majority of platforms.  If `Makefile'
 works for you, good; If not, I don't want to hear about it.  If you
-need to compile SCM without build.scm, there are several ways to
-proceed:
+need to compile SCM without build, there are several ways to proceed:
 
-   * Use SCM on a different platform to run `build.scm' to create a
-     script to build SCM;
+   * Use the build (http://swissnet.ai.mit.edu/~jaffer/buildscm.html)
+     web page to create custom batch scripts for compiling SCM.
 
-   * Use another implementation of Scheme to run `build.scm' to create a
+   * Use SCM on a different platform to run `build' to create a script
+     to build SCM;
+
+   * Use another implementation of Scheme to run `build' to create a
      script to build SCM;
 
    * Create your own script or `Makefile'.
 
-   * Buy a SCM executable from jaffer @ ai.mit.edu.  See the end of the
-     `ANNOUNCE' file in the distribution for details.
-
-   * Use scmconfig (From: bos@scrg.cs.tcd.ie):
-
-     Build and install scripts using GNU "autoconf" are available from
-     `scmconfig4e3.tar.gz' in the distribution directories.  See
-     `README.unix' in `scmconfig4e3.tar.gz' for further instructions.
-
-     *Note:* The last release of scmconfig (4e3) was on March 20, 1996.
-     I am moving it to the OLD subdirectory until someone submits an
-     update.
-
 
 
 File: scm.info,  Node: Editing Scheme Code,  Next: Debugging Scheme Code,  Prev: SCM Session,  Up: Operational Features
@@ -177,11 +169,11 @@ File: scm.info,  Node: Editing Scheme Code,  Next: Debugging Scheme Code,  Prev:
 Editing Scheme Code
 ===================
 
- - Function: ed ARG1 ...
+ - Function: ed arg1 ...
      The value of the environment variable `EDITOR' (or just `ed' if it
      isn't defined) is invoked as a command with arguments ARG1 ....
 
- - Function: ed FILENAME
+ - Function: ed filename
      If SCM is compiled under VMS `ed' will invoke the editor with a
      single the single argument FILENAME.
 
@@ -190,11 +182,11 @@ Gnu Emacs:
      files ending in .scm are automatically put into scheme-mode.
      EMACS for MS-DOS and MS-Windows systems is available (free) from:
 
-              `http://simtel.coast.net/SimTel/gnu/demacs.html'
+              <http://simtel.coast.net/SimTel/gnu/demacs.html>
 
      If your Emacs can run a process in a buffer you can use the Emacs
-command `M-x run-scheme' with SCM.  Otherwise, use the emacs command
-`M-x suspend-emacs'; or see "other systems" below.
+     command `M-x run-scheme' with SCM.  Otherwise, use the emacs
+     command `M-x suspend-emacs'; or see "other systems" below.
 
 Epsilon (MS-DOS):
      There is lisp (and scheme) mode available by use of the package
@@ -213,7 +205,7 @@ Epsilon (MS-DOS):
 
 other systems:
      Define the environment variable `EDITOR' to be the name of the
-     editing program you use.  The SCM procedure `(ed arg1 ...)'  will
+     editing program you use.  The SCM procedure `(ed arg1 ...)' will
      invoke your editor and return to SCM when you exit the editor.  The
      following definition is convenient:
 
@@ -229,32 +221,32 @@ File: scm.info,  Node: Problems Compiling,  Next: Problems Linking,  Prev: Autom
 Problems Compiling
 ==================
 
-FILE    PROBLEM / MESSAGE                HOW TO FIX                       
-*.c     include file not found.          Correct the status of            
-                                         STDC_HEADERS in scmfig.h.        
-                                         fix #include statement or add    
-                                         #define for system type to       
-                                         scmfig.h.                        
-*.c     Function should return a value.  Ignore.                          
-        Parameter is never used.                                          
-        Condition is always false.                                        
-        Unreachable code in function.                                     
-scm.c   assignment between incompatible  Change SIGRETTYPE in scm.c.      
-        types.                                                            
-time.c  CLK_TCK redefined.               incompatablility between         
-                                         <stdlib.h> and <sys/types.h>.    
-                                         Remove STDC_HEADERS in scmfig.h. 
-                                         Edit <sys/types.h> to remove     
-                                         incompatability.                 
-subr.c  Possibly incorrect assignment    Ignore.                          
-        in function lgcd.                                                 
-sys.c   statement not reached.           Ignore.                          
-        constant in conditional                                           
-        expression.                                                       
-sys.c   undeclared, outside of           #undef STDC_HEADERS in scmfig.h. 
-        functions.                                                        
-scl.c   syntax error.                    #define SYSTNAME to your system  
-                                         type in scl.c (softtype).        
+FILE    PROBLEM / MESSAGE                HOW TO FIX
+*.c     include file not found.          Correct the status of
+                                         STDC_HEADERS in scmfig.h.
+                                         fix #include statement or add
+                                         #define for system type to
+                                         scmfig.h.
+*.c     Function should return a value.  Ignore.
+        Parameter is never used.         
+        Condition is always false.       
+        Unreachable code in function.    
+scm.c   assignment between incompatible  Change SIGRETTYPE in scm.c.
+        types.                           
+time.c  CLK_TCK redefined.               incompatablility between
+                                         <stdlib.h> and <sys/types.h>.
+                                         Remove STDC_HEADERS in scmfig.h.
+                                         Edit <sys/types.h> to remove
+                                         incompatability.
+subr.c  Possibly incorrect assignment    Ignore.
+        in function lgcd.                
+sys.c   statement not reached.           Ignore.
+        constant in conditional          
+        expression.                      
+sys.c   undeclared, outside of           #undef STDC_HEADERS in scmfig.h.
+        functions.                       
+scl.c   syntax error.                    #define SYSTNAME to your system
+                                         type in scl.c (softtype).
 
 
 
@@ -263,8 +255,8 @@ File: scm.info,  Node: Problems Linking,  Next: Problems Running,  Prev: Problem
 Problems Linking
 ================
 
-PROBLEM                              HOW TO FIX                           
-_sin etc. missing.                   Uncomment LIBS in makefile.          
+PROBLEM                              HOW TO FIX
+_sin etc. missing.                   Uncomment LIBS in makefile.
 
 
 
@@ -273,38 +265,38 @@ File: scm.info,  Node: Problems Running,  Next: Testing,  Prev: Problems Linking
 Problems Running
 ================
 
-PROBLEM                              HOW TO FIX                           
-Opening message and then machine     Change memory model option to C      
-crashes.                             compiler (or makefile).              
-                                     Make sure sizet definition is        
-                                     correct in scmfig.h.                 
-                                     Reduce the size of HEAP_SEG_SIZE in  
-                                     setjump.h.                           
-Input hangs.                         #define NOSETBUF                     
-ERROR: heap: need larger initial.    Increase initial heap allocation     
-                                     using -a<kb> or INIT_HEAP_SIZE.      
-ERROR: Could not allocate.           Check sizet definition.              
-                                     Use 32 bit compiler mode.            
-                                     Don't try to run as subproccess.     
-remove <FLAG> in scmfig.h and        Do so and recompile files.           
-recompile scm.                                                            
-add <FLAG> in scmfig.h and                                                
-recompile scm.                                                            
-ERROR: Init5d2.scm not found.        Assign correct IMPLINIT in makefile  
-                                     or scmfig.h.                         
-                                     Define environment variable          
-                                     SCM_INIT_PATH to be the full         
-                                     pathname of Init5d2.scm.             
-WARNING: require.scm not found.      Define environment variable          
-                                     SCHEME_LIBRARY_PATH to be the full   
-                                     pathname of the scheme library       
-                                     [SLIB].                              
-                                     Change library-vicinity in           
-                                     Init5d2.scm to point to library or   
-                                     remove.                              
-                                     Make sure the value of               
-                                     (library-vicinity) has a trailing    
-                                     file separator (like / or \).        
+PROBLEM                              HOW TO FIX
+Opening message and then machine     Change memory model option to C
+crashes.                             compiler (or makefile).
+                                     Make sure sizet definition is
+                                     correct in scmfig.h.
+                                     Reduce the size of HEAP_SEG_SIZE in
+                                     setjump.h.
+Input hangs.                         #define NOSETBUF
+ERROR: heap: need larger initial.    Increase initial heap allocation
+                                     using -a<kb> or INIT_HEAP_SIZE.
+ERROR: Could not allocate.           Check sizet definition.
+                                     Use 32 bit compiler mode.
+                                     Don't try to run as subproccess.
+remove <FLAG> in scmfig.h and        Do so and recompile files.
+recompile scm.                       
+add <FLAG> in scmfig.h and           
+recompile scm.                       
+ERROR: Init5d6.scm not found.        Assign correct IMPLINIT in makefile
+                                     or scmfig.h.
+                                     Define environment variable
+                                     SCM_INIT_PATH to be the full
+                                     pathname of Init5d6.scm.
+WARNING: require.scm not found.      Define environment variable
+                                     SCHEME_LIBRARY_PATH to be the full
+                                     pathname of the scheme library
+                                     [SLIB].
+                                     Change library-vicinity in
+                                     Init5d6.scm to point to library or
+                                     remove.
+                                     Make sure the value of
+                                     (library-vicinity) has a trailing
+                                     file separator (like / or \).
 
 
 
@@ -333,13 +325,13 @@ of pi.
      > (load "pi")
      ;loading "pi"
      ;done loading "pi.scm"
-     ;Evaluation took 20 mSec (0 in gc) 767 cells work, 233 bytes other
+     ;Evaluation took 20 ms (0 in gc) 767 cells work, 233.B other
      #<unspecified>
      > (pi 100 5)
      00003 14159 26535 89793 23846 26433 83279 50288 41971 69399
      37510 58209 74944 59230 78164 06286 20899 86280 34825 34211
      70679
-     ;Evaluation took 550 mSec (60 in gc) 36976 cells work, 1548 bytes other
+     ;Evaluation took 550 ms (60 in gc) 36976 cells work, 1548.B other
      #<unspecified>
 
 Loading `bench.scm' will compute and display performance statistics of
@@ -347,34 +339,34 @@ SCM running `pi.scm'.  `make bench' or `make benchlit' appends the
 performance report to the file `BenchLog', facilitating tracking
 effects of changes to SCM on performance.
 
-PROBLEM                              HOW TO FIX                           
-Runs some and then machine crashes.  See above under machine crashes.     
-Runs some and then ERROR: ...        Remove optimization option to C      
-(after a GC has happened).           compiler and recompile.              
-                                     #define SHORT_ALIGN in `scmfig.h'.   
-Some symbol names print incorrectly. Change memory model option to C      
-                                     compiler (or makefile).              
-                                     Check that HEAP_SEG_SIZE fits        
-                                     within sizet.                        
-                                     Increase size of HEAP_SEG_SIZE (or   
-                                     INIT_HEAP_SIZE if it is smaller      
-                                     than HEAP_SEG_SIZE).                 
-ERROR: Rogue pointer in Heap.        See above under machine crashes.     
-Newlines don't appear correctly in   Check file mode (define OPEN_... in  
-output files.                        `Init5d2.scm').                      
-Spaces or control characters appear  Check character defines in           
-in symbol names.                     `scmfig.h'.                          
-Negative numbers turn positive.      Check SRS in `scmfig.h'.             
-VMS: Couldn't unwind stack.          #define CHEAP_CONTIUATIONS in        
-                                     `scmfig.h'.                          
-VAX: botched longjmp.                                                     
+PROBLEM                              HOW TO FIX
+Runs some and then machine crashes.  See above under machine crashes.
+Runs some and then ERROR: ...        Remove optimization option to C
+(after a GC has happened).           compiler and recompile.
+                                     #define SHORT_ALIGN in `scmfig.h'.
+Some symbol names print incorrectly. Change memory model option to C
+                                     compiler (or makefile).
+                                     Check that HEAP_SEG_SIZE fits
+                                     within sizet.
+                                     Increase size of HEAP_SEG_SIZE (or
+                                     INIT_HEAP_SIZE if it is smaller
+                                     than HEAP_SEG_SIZE).
+ERROR: Rogue pointer in Heap.        See above under machine crashes.
+Newlines don't appear correctly in   Check file mode (define OPEN_... in
+output files.                        `Init5d6.scm').
+Spaces or control characters appear  Check character defines in
+in symbol names.                     `scmfig.h'.
+Negative numbers turn positive.      Check SRS in `scmfig.h'.
+VMS: Couldn't unwind stack.          #define CHEAP_CONTIUATIONS in
+                                     `scmfig.h'.
+VAX: botched longjmp.                
 
 Sparc(SUN-4) heap is growing out of control
      You are experiencing a GC problem peculiar to the Sparc.  The
      problem is that SCM doesn't know how to clear register windows.
      Every location which is not reused still gets marked at GC time.
      This causes lots of stuff which should be collected to not be.
-     This will be a problem with any *conservative* GC until we find
+     This will be a problem with any _conservative_ GC until we find
      what instruction will clear the register windows.  This problem is
      exacerbated by using lots of call-with-current-continuations.