Startup and top changed so that -e entry points get the whole command line,

including the program name.

syscalls.scm has a trivial documentation upgrade.

scsh/startup.scm

@@ -50,15 +50,15 @@
 
 (define (scsh-stand-alone-resumer start)
   (usual-resumer  ;sets up exceptions, interrupts, and current input & output
-   (lambda (args)
+   (lambda (args)	; VM gives us our args, but not our program.
      (init-scsh-hindbrain #t)	; Whatever. Relink & install scsh's I/O system.
      (call-with-current-continuation
        (lambda (halt)
-	 (set! %full-command-line args)
-	 (set-command-line-args! (cons "" args))	; WRONG.
+	 (set! %vm-prog-args (cons "scsh" args))	; WRONG -- use image.
+	 (set-command-line-args! %vm-prog-args)
 	 (with-handler (simple-condition-handler halt (error-output-port))
 	   (lambda ()
-	     (let ((exit-val (start command-line-arguments)))
+	     (let ((exit-val (start (command-line))))
 	       (if (integer? exit-val) exit-val 0))))))))) ; work around bug.
 
-(define %full-command-line #f)
+(define %vm-prog-args #f)

scsh/syscalls.scm

@@ -1072,11 +1072,11 @@
 (define-errno-syscall (%fcntl-read fd command) %fcntl-read/errno value)
 (define-errno-syscall (%fcntl-write fd command val) %fcntl-write/errno)
 
-;;; fcntl()'s F_GETFD and F_SETFD.
-;;; Note that the SLEAZY- prefix on the CALL/FDES isn't an optimisation.
-;;; Straight CALL/FDES modifies unrevealed file descriptors by clearing
-;;; their CLOEXEC bit when it reveals them -- so it would interfere with
-;;; the reading.
+;;; fcntl()'s F_GETFD and F_SETFD.  Note that the SLEAZY- prefix on the
+;;; CALL/FDES isn't an optimisation; it's *required* for the correct behaviour
+;;; of these procedures. Straight CALL/FDES modifies unrevealed file
+;;; descriptors by clearing their CLOEXEC bit when it reveals them -- so it
+;;; would interfere with the reading and writing of that bit!
 
 (define (fdes-flags fd/port)
   (sleazy-call/fdes fd/port

scsh/top.scm

@@ -214,9 +214,9 @@
 		       name))
 
 
-(define (parse-switches-and-execute args context)
+(define (parse-switches-and-execute all-args context)
   (receive (switches term-switch term-val top-entry args)
-           (parse-scsh-args args)
+           (parse-scsh-args (cdr all-args))
     ((with-new-session context	; "Log in" user.
 		      (current-input-port) (current-output-port)
 		      args
@@ -231,7 +231,7 @@
 			   (if (string? term-val)
 			       term-val			; Script file.
 			       "file-descriptor-script"); -s<num>
-			   "scsh")
+			   (car all-args))
 		       args))
 
 	     ;; Set HOME-DIRECTORY and EXEC-PATH-LIST,