[PATCH 1/2] exec: type: ignore first --, per POSIX

[наб <nabijaczleweli@nabijaczleweli.xyz>]

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Issue 7, XCU, type, OPTIONS reads "None.",
and type isn't a special built-in listed in sexion 2.14 ‒
this means that XCU, 1. Introduction, 1.4 Utility Description Defaults,
OPTIONS, Default Behavior applies:
  Default Behavior: When this section is listed as "None.", it means
  that the implementation need not support any options. Standard
  utilities that do not accept options, but that do accept operands,
  shall recognize "--" as a first argument to be discarded.

Test with: type -- ls --
Correct output lists ls=/bin/ls, then --=ENOENT
Wrong output lists --=ENOENT, ls=/bin/ls, --=ENOENT

Fixes: https://bugs.debian.org/870317
---
 src/exec.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/exec.c b/src/exec.c
index 87354d4..d61881d 100644
--- a/src/exec.c
+++ b/src/exec.c
@@ -760,11 +760,11 @@ unsetfunc(const char *name)
 int
 typecmd(int argc, char **argv)
 {
-	int i;
 	int err = 0;
 
-	for (i = 1; i < argc; i++) {
-		err |= describe_command(out1, argv[i], NULL, 1);
+	nextopt(nullstr);
+	while (*argptr) {
+		err |= describe_command(out1, *argptr++, NULL, 1);
 	}
 	return err;
 }
-- 
2.30.2


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