code: purgatorio

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make emu start with `sh -l` if no other arguments are provided

--- a/appl/cmd/emuinit.b

+++ b/appl/cmd/emuinit.b

@@ -14,22 +14,25 @@

 init()

 {

 	sys = load Sys Sys->PATH;

+

 	sys->bind("#e", "/env", sys->MREPL|sys->MCREATE);	# if #e not configured, that's fine

 	args := getenv("emuargs");

 	arg = load Arg Arg->PATH;

-	if (arg == nil)

+	if (arg == nil) {

 		sys->fprint(sys->fildes(2), "emuinit: cannot load %s: %r\n", Arg->PATH);

-	else{

+	} else {

 		arg->init(args);

 		while((c := arg->opt()) != 0)

 			case c {

 			'g' or 'c' or 'C' or 'm' or 'p' or 'f' or 'r' or 'd' =>

 				arg->arg();

-	                  }

+			}

 		args = arg->argv();

 	}

+

 	mod: Command;

 	(mod, args) = loadmod(args);

+

 	mod->init(nil, args);

 }

@@ -36,10 +39,11 @@

 loadmod(args: list of string): (Command, list of string)

 {

 	path := Command->PATH;

+	

 	if(args != nil)

 		path = hd args;

 	else

-		args = "-l" :: nil;	# add startup option

+		args = "sh" :: "-l" :: nil;	# add startup option

 	# try loading the module directly.

 	mod: Command;

@@ -60,6 +64,7 @@

 		sys->fprint(sys->fildes(2), "emuinit: unable to load %s: %s\n", path, err);

 		raise "fail:error";

 	}

+

 	return (mod, "sh" :: "-c" :: "$*" :: args);

 }

--- a/appl/cmd/sh/sh.b

+++ b/appl/cmd/sh/sh.b

@@ -152,6 +152,8 @@

 			opts.ctxtflags |= Context.EXECPRINT;

 		'c' =>

 			opts.carg = argm->earg();

+		* =>

+			argm->usage();

 		}

 	}