From 98af68fe26e1bcba9c29f5f3fa2ae4ba9cace339 Mon Sep 17 00:00:00 2001
From: James Zern <jzern@google.com>
Date: Thu, 12 Dec 2013 20:20:08 -0800
Subject: [PATCH] cwebp: let -- stop parameter parsing

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

Change-Id: I13b506886c3df8a4e8fb350f3d365eaf7e072a4a
---
 examples/cwebp.c | 3 +++
 man/cwebp.1      | 4 +++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/examples/cwebp.c b/examples/cwebp.c
index 0fa83d1e..2d1f076d 100644
--- a/examples/cwebp.c
+++ b/examples/cwebp.c
@@ -895,6 +895,9 @@ int main(int argc, const char *argv[]) {
 #endif
     } else if (!strcmp(argv[c], "-v")) {
       verbose = 1;
+    } else if (!strcmp(argv[c], "--")) {
+      if (c < argc - 1) in_file = argv[++c];
+      break;
     } else if (argv[c][0] == '-') {
       fprintf(stderr, "Error! Unknown option '%s'\n", argv[c]);
       HelpLong();
diff --git a/man/cwebp.1 b/man/cwebp.1
index 9ac40311..f2a9b8bb 100644
--- a/man/cwebp.1
+++ b/man/cwebp.1
@@ -1,5 +1,5 @@
 .\"                                      Hey, EMACS: -*- nroff -*-
-.TH CWEBP 1 "October 23, 2013"
+.TH CWEBP 1 "December 12, 2013"
 .SH NAME
 cwebp \- compress an image file to a WebP file
 .SH SYNOPSIS
@@ -255,6 +255,8 @@ cwebp \-q 50 -lossless picture.png \-o picture_lossless.webp
 cwebp \-q 70 picture_with_alpha.png \-o picture_with_alpha.webp
 .br
 cwebp \-sns 70 \-f 50 \-size 60000 picture.png \-o picture.webp
+.br
+cwebp \-o picture.webp \-\- \-\-\-picture.png
 
 .SH AUTHORS
 \fBcwebp\fP was written by the WebP team.