-s<num> is now -sfd <num> -- more consistent with general switch design.

NEWS

@@ -13,6 +13,8 @@ Recent changes to the Scheme Shell.
 	 Name-consistency change (non-backwards compatible):
 	   open/nonblocking renamed to open/non-blocking,
 	       which is the way it was always described in the manual.
+	 -s<num> is now -sfd <num> -- more consistent with general switch
+	   design.
 
 11/03/96  (version 0.4.4)
 	  minor fixes for SunOS, Solaris, AIX, NeXTStep, 686 systems 

RELEASE

@@ -160,7 +160,7 @@ We even have one of those URL things:
 ** New meta-arg second-line syntax
     Simpler grammar.
 
-** New -s<fdes> command line switch
+** New -sfd <fdes> command line switch
     Scripts can be read from stdin or other open file descriptors.
 
 ** Starting up programs with the "-e <entry-point>" command-line

scsh/scsh-package.scm

@@ -272,7 +272,7 @@
 	receiving
 	scsh-version
 	scsh-level-0		; with-current-input-port error-output-port
-				; with-current-output-port exit regexp
+				; with-current-output-port exit
 	scsh-level-0-internals	; set-command-line-args! init-scsh-vars
 	scheme)
   (files top meta-arg))

scsh/top.scm

@@ -36,7 +36,7 @@
 ;;; 	-l  <file>		Load <file> into current package.
 ;;;	-lm <file>		Load <file> into config package.
 ;;;
-;;;                             These two require terminating -s <script> arg:
+;;;                             These two require a terminating -s or -sfd arg:
 ;;; 	-ds			Load terminating script into current package.
 ;;; 	-dm			Load terminating script into config package.
 ;;; 	
@@ -45,7 +45,7 @@
 ;;;				Terminating switches:
 ;;; 	-c <exp>		Eval <exp>, then exit.
 ;;; 	-s <script>		Specify <script> to be loaded by a -ds or -dm.
-;;;	-s<num>			Script is on file descriptor <num>.
+;;;	-sfd <num>		Script is on file descriptor <num>.
 ;;; 	--  			Interactive scsh.
 
 
@@ -54,10 +54,10 @@
 ;;; - We first expand out any initial \ <filename> meta-arg.
 ;;; - A switch-list elt is either "-ds", "-dm", or a (switch . arg) pair
 ;;;   for a -o, -n, -m, -l, or -lm switch.
-;;; - Terminating switch is one of {s, c, #f} for -s or -s<num>, -c, 
+;;; - Terminating switch is one of {s, c, #f} for -s or -sfd, -c, 
 ;;;   and -- respectively.
 ;;; - Terminating arg is the <exp> arg to -c, the <script> arg to -s, 
-;;;   the input port for -s<num>, otw #f.
+;;;   the input port for -sfd, otw #f.
 ;;; - top-entry is the <entry> arg to a -e; #f if none.
 ;;; - command-line args are what's left over after picking off the scsh
 ;;;   switches.
@@ -83,16 +83,15 @@
 		     (values (reverse switches) 's (car args)
 			     top-entry (cdr args))))
 
-		;; -s<num>
-		((regexp-exec fd-script-regexp arg) =>
-		 (lambda (m)
-		   (let* ((fd (string->number (match:substring m 1) 10))
-			  (p (fdes->inport fd)))
-		     (release-port-handle p)	; Unreveal the port.
-		     (values (reverse switches)
-			     's
-			     (fdes->inport fd)
-			     top-entry args))))
+		;; -sfd <num>
+		((string=? arg "-sfd")
+		 (if (not (pair? args))
+		     (bad-arg "-sfd switch requires argument")
+		     (let* ((fd (string->number (car args)))
+			    (p (fdes->inport fd)))
+		       (release-port-handle p)	; Unreveal the port.
+		       (values (reverse switches) 's p
+			       top-entry (cdr args)))))
 
 		((string=? arg "--")
 		 (if need-script?
@@ -135,8 +134,6 @@
 
 	(values (reverse switches) #f #f top-entry '()))))
 
-(define fd-script-regexp (make-regexp "^-s([0-9]+)$"))
-
 ;;; Do each -ds, -dm, -o, -n, -m, -l, and -lm switch, and return the final 
 ;;; result package and a flag saying if the script was loaded by a -ds or -dm.
 
@@ -230,7 +227,7 @@
 	         (cons (if (eq? term-switch 's)
 			   (if (string? term-val)
 			       term-val			; Script file.
-			       "file-descriptor-script"); -s<num>
+			       "file-descriptor-script"); -sfd <num>
 			   (car all-args))
 		       args))
 
@@ -300,7 +297,7 @@ switch:	-e <entry-point>	Specify top-level entry point.
 	-dm			Do script module.
 
 end-option:	-s <script>	Specify script.
-		-s<num>		Script is on file descriptor <num>.
+		-sfd <num>	Script is on file descriptor <num>.
 		-c <exp>	Evaluate expression.
 		--		Interactive session.
 "))