Add --dry-run.

git-open

@@ -2,6 +2,8 @@
 
 import sys
 import subprocess
+import argparse
+
 
 def popen(str):
     p = subprocess.Popen(str.split(" "),
@@ -50,17 +52,18 @@ def main(args):
     out = popen("git remote")
     remotes = out.strip().split("\n")
 
-    remote = False
-    if len(args) == 2:
-        remote = sys.argv[1]
+    remote = args.remote
 
-    # TODO -n --no-act flag
+    do = open_remote
+    if args.dry_run:
+        do = lambda x: print(to_http(remote_url(x)))
 
     if not remotes:
         err("No remotes")
 
+    if remote:
         try:
-        open_remote(remote)
+            do(remote)
             return
         except Exception as e:
             warn(str(e))
@@ -69,7 +72,7 @@ def main(args):
 
     for remote in remotes:
         try:
-            open_remote(remote)
+            do(remote)
             break
         except Exception as e:
             warn(str(e))
@@ -77,4 +80,9 @@ def main(args):
         err("All remotes failed")
 
 if __name__ == "__main__":
-    main(sys.argv)
+    parser = argparse.ArgumentParser(description='open git remotes in web browser')
+    parser.add_argument('-n', '--dry-run', action='store_true', dest='dry_run')
+    parser.add_argument('remote', action='store', nargs='?')
+    args = parser.parse_args()
+    main(args)
+