[ptxdist] Allow -- to stop parse_first option parsing

When trying to invoke a command via 'ptxdist bash cmd [args...]'
If cmd takes an argument that matches one of the option that is parsed in
parse_first in ptxdist, then cmd never gets that argument.

For example,
	ptxdist bash foo -d bar
would get invoked as:
	foo bar

This commit allows one to overcome this limitation:
	ptxdist bash -- foo -d bar
so that it gets invoked properly as:
	foo -d bar

Signed-off-by: Jon Ringle <jon@ringle.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

1 files changed, 7 insertions, 0 deletions

diff --git a/bin/ptxdist b/bin/ptxdist
index 3b923d84f..7aa7633e8 100755
--- a/bin/ptxdist
+++ b/bin/ptxdist
@@ -1291,6 +1291,13 @@ parse_first()
 		-q|--quiet)
 			PTXDIST_QUIET=1
 			;;
+		--)
+			while [ ${#} -ne 0 ]; do
+				arg="${1}"
+				shift
+				PTXDIST_ARGS_SECOND[${#PTXDIST_ARGS_SECOND[@]}]="${arg}"
+			done
+			;;
 		*)
 			PTXDIST_ARGS_SECOND[${#PTXDIST_ARGS_SECOND[@]}]="${arg}"
 			;;