From c2d2fee474670be0ce744fb06369d31f5af849f1 Mon Sep 17 00:00:00 2001
From: Scott Fennell <spfennell@gmail.com>
Date: Mon, 8 Jul 2019 09:28:53 -0500
Subject: [PATCH] #837 default input file to first argument if RUN_ is not
 present

---
 .../CommandLineArguments.cpp                  | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/trick_source/sim_services/CommandLineArguments/CommandLineArguments.cpp b/trick_source/sim_services/CommandLineArguments/CommandLineArguments.cpp
index fc079c5c..bdd9dbb0 100644
--- a/trick_source/sim_services/CommandLineArguments/CommandLineArguments.cpp
+++ b/trick_source/sim_services/CommandLineArguments/CommandLineArguments.cpp
@@ -158,14 +158,19 @@ int Trick::CommandLineArguments::process_sim_args(int nargs , char **args) {
 
     if ( argc > 1 ) {
 
-        /* First occurnance of "RUN_*" is the input file name: '<Run_dir>/<file_name>' */
-      for(int ii = 1; ii < argc; ii++) {
-        if(std::string(argv[ii]).find("RUN_") != std::string::npos) {
-          input_file = argv[ii];
-          run_dir = argv[ii];
-          break;
+    /* First occurnance of "RUN_*" is the input file name: '<Run_dir>/<file_name>'. 
+       If not found, defaults to first argument */
+        
+        input_file = argv[1];
+        run_dir = argv[1];
+
+        for(int ii = 1; ii < argc; ii++) {
+            if(std::string(argv[ii]).find("RUN_") != std::string::npos) {
+              input_file = argv[ii];
+              run_dir = argv[ii];
+              break;
+            }
         }
-      }
 
         found = run_dir.find_last_of("/") ;
         if ( found != std::string::npos ) {