From 76f28241f1a6eb76070d470779fc17d43ca838e3 Mon Sep 17 00:00:00 2001
From: Yukihiro Matsumoto <matz@ruby-lang.org>
Date: Tue, 16 Oct 2012 20:54:06 +0900
Subject: "mrbc -" should take input from stdin; close #489

---
 tools/mrbc/mrbc.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

(limited to 'tools')

diff --git a/tools/mrbc/mrbc.c b/tools/mrbc/mrbc.c
index 5382b90a8..3c6352f80 100644
--- a/tools/mrbc/mrbc.c
+++ b/tools/mrbc/mrbc.c
@@ -77,8 +77,11 @@ parse_args(mrb_state *mrb, int argc, char **argv, struct _args *args)
 
   for (argc--,argv++; argc > 0; argc--,argv++) {
     if (**argv == '-') {
-      if (strlen(*argv) <= 1)
-        return -1;
+      if (strlen(*argv) == 1) {
+	args->filename = infile = "-";
+	args->rfp = stdin;
+	break;
+      }
 
       switch ((*argv)[1]) {
       case 'o':
@@ -134,9 +137,14 @@ parse_args(mrb_state *mrb, int argc, char **argv, struct _args *args)
   if (args->check_syntax)
     return 0;
 
-  if (outfile == NULL)
-    outfile = get_outfilename(infile, args->ext);
-
+  if (outfile == NULL) {
+    if (strcmp("-", infile) == 0) {
+      outfile = infile;
+    }
+    else {
+      outfile = get_outfilename(infile, args->ext);
+    }
+  }
   if (strcmp("-", outfile) == 0) {
     args->wfp = stdout;
   }
-- 
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