PATCH: Re: /bin/zsh -ce 'false; echo bug'

["Bart Schaefer" <schaefer@candle.brasslantern.com>]

On Aug 26,  6:06pm, Bart Schaefer wrote:
> Subject: Re: /bin/zsh -ce 'false; echo bug'
> On Aug 26,  9:26am, Owen M. Astley wrote:
> > Subject: Re: /bin/zsh -ce 'false; echo bug'
> > On Wed, 25 Aug 1999, Matt Watson wrote:
> > 
> > > gnumake-3.74 wants to use "/bin/sh -ce <commandstring>"
> > 
> > I 'think' that POSIX doesn't allow for options of this type, it should be
> > written as -c -e <commandstring>.
> 
> Zsh interprets everything after the -c as part of the command, so that will
> attempt to run a command named "-e".

Here's a patch against 3.0.6, which should also apply to 3.1.6, to make
zsh's behavior consistent with bash's in this instance.  If you really want
to run a command named "-e" (or anything else starting with - or +), after
this patch you need one of

	zsh -cb ...
	zsh -c -b ...
	zsh -c- ...
	zsh -c - ...
	zsh -c -- ...

where "-b" is of course the csh-ism for "--".  It previously was neither
necessary nor possible to combine -b and -c in any order (whichever came
first was the only one interpreted).

I await word from the more extensively POSIXified readers on whether this
patch should be officially included.

Index: Src/init.c
===================================================================
@@ -236,14 +236,9 @@
 	    }
 
 	    if (**argv == 'c') {         /* -c command */
-		if (!*++argv) {
-		    zerr("string expected after -c", NULL, 0);
-		    exit(1);
-		}
-		cmd = *argv++;
+		cmd = *argv;
 		opts[INTERACTIVE] &= 1;
 		opts[SHINSTDIN] = 0;
-		goto doneoptions;
 	    } else if (**argv == 'o') {
 		if (!*++*argv)
 		    argv++;
@@ -276,6 +271,13 @@
     }
     doneoptions:
     paramlist = newlinklist();
+    if (cmd) {
+	if (!*argv) {
+	    zerr("string expected after -%s", cmd, 0);
+	    exit(1);
+	}
+	cmd = *argv++;
+    }
     if (*argv) {
 	if (unset(SHINSTDIN)) {
 	    argzero = *argv;