Fix check for valid file, add -F to help

1 files changed, 6 insertions, 2 deletions

diff --git a/fcomp.c b/fcomp.c
index bff6823..65f5812 100644
--- a/fcomp.c
+++ b/fcomp.c
@@ -144,6 +144,8 @@ static void print_help(char *argv0)
 	    "Same");
     fprintf(stderr, "%8s %4s  %15s %50s\n", "-f", "[..]", "file",
 	    "Select the input file to use");
+    fprintf(stderr, "%8s %4s  %15s %50s\n", "-F", "[..]", "filestream",
+	    "Input can be provided as a string");
     fprintf(stderr, "%8s %4s  %15s %50s\n", "stdin", "[..]", "",
 	    "Input can come from rediretion as well as files");
     fprintf(stderr, "%8s %4s  %15s %50s\n", "-z", "", "fuzzy",
@@ -688,9 +690,11 @@ static int set_input(FILE **f)
         if (!cfg.file || strcmp(cfg.file, "") == 0)
             return -1;
 	*f = fmemopen(cfg.file, strlen(cfg.file), "r");
-    } else {
+        if (!*f) return -1;
+    }
+    else {
 	*f = fopen(cfg.file, "r");
-	if (!f) {
+	if (!*f) {
 	    fprintf(stderr, "Couldn't open %s\n", cfg.file);
 	    return -1;
 	}