From a33831e21a3e09441974f5b6da92ad136cb8bdc8 Mon Sep 17 00:00:00 2001
From: James Zern <jzern@google.com>
Date: Thu, 12 Dec 2013 20:20:08 -0800
Subject: [PATCH] dwebp: let -- stop parameter parsing

this enables dwebp to accept input files starting with '-'

Change-Id: I1e2c9c7bc2963d77be039c99e72f744560f0b0a2
---
 examples/dwebp.c | 3 +++
 man/dwebp.1      | 4 +++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/examples/dwebp.c b/examples/dwebp.c
index 5a2c0b65..fca9c9a7 100644
--- a/examples/dwebp.c
+++ b/examples/dwebp.c
@@ -649,6 +649,9 @@ int main(int argc, const char *argv[]) {
 #endif
     } else if (!strcmp(argv[c], "-incremental")) {
       incremental = 1;
+    } else if (!strcmp(argv[c], "--")) {
+      if (c < argc - 1) in_file = argv[++c];
+      break;
     } else if (argv[c][0] == '-') {
       fprintf(stderr, "Unknown option '%s'\n", argv[c]);
       Help();
diff --git a/man/dwebp.1 b/man/dwebp.1
index 9a616763..36bbf0c9 100644
--- a/man/dwebp.1
+++ b/man/dwebp.1
@@ -1,5 +1,5 @@
 .\"                                      Hey, EMACS: -*- nroff -*-
-.TH DWEBP 1 "November 26, 2013"
+.TH DWEBP 1 "December 12, 2013"
 .SH NAME
 dwebp \- decompress a WebP file to an image file
 .SH SYNOPSIS
@@ -99,6 +99,8 @@ http://www.webmproject.org/code/contribute/submitting-patches/
 dwebp picture.webp \-o output.png
 .br
 dwebp picture.webp \-ppm \-o output.ppm
+.br
+dwebp \-o output.ppm \-\- \-\-\-picture.webp
 
 .SH AUTHORS
 \fBdwebp\fP was written by the WebP team.