--filelist: Support reading from /dev/stdin ("-" as shortcut)

Note that read_filelist used to check if its argument was an image (for people
accidentaly typing "feh -df *" instead of "feh -dF *"); this was removed
because it failed on /dev/stdin.

I might re-add it, but I'm not yet sure about the future of feh's automatic
filelist saving.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/options.c b/src/options.c
index 13aaa95..c5ed85d 100644
--- a/src/options.c
+++ b/src/options.c
@@ -627,7 +627,10 @@ static void feh_parse_option_array(int argc, char **argv, int finalrun)
 			opt.alpha_level = 255 - atoi(optarg);
 			break;
 		case 'f':
-			opt.filelistfile = estrdup(optarg);
+			if (!strcmp(optarg, "-"))
+				opt.filelistfile = estrdup("/dev/stdin");
+			else
+				opt.filelistfile = estrdup(optarg);
 			break;
 		case '0':
 			opt.reload_button = atoi(optarg);