diff --git a/src/base/base_command_line.c b/src/base/base_command_line.c
index a0f9717d..7792afde 100644
--- a/src/base/base_command_line.c
+++ b/src/base/base_command_line.c
@@ -2,18 +2,7 @@
 // Licensed under the MIT license (https://opensource.org/license/mit/)
 
 ////////////////////////////////
-//~ NOTE(rjf): Command Line Option Parsing
-
-internal U64
-cmd_line_hash_from_string(String8 string)
-{
-  U64 result = 5381;
-  for(U64 i = 0; i < string.size; i += 1)
-  {
-    result = ((result << 5) + result) + string.str[i];
-  }
-  return result;
-}
+//~ rjf: Command Line Parsing Functions
 
 internal CmdLineOpt **
 cmd_line_slot_from_string(CmdLine *cmd_line, String8 string)
@@ -21,7 +10,7 @@ cmd_line_slot_from_string(CmdLine *cmd_line, String8 string)
   CmdLineOpt **slot = 0;
   if(cmd_line->option_table_size != 0)
   {
-    U64 hash = cmd_line_hash_from_string(string);
+    U64 hash = u64_hash_from_str8(string);
     U64 bucket = hash % cmd_line->option_table_size;
     slot = &cmd_line->option_table[bucket];
   }
@@ -64,7 +53,7 @@ cmd_line_insert_opt(Arena *arena, CmdLine *cmd_line, String8 string, String8List
   {
     var = push_array(arena, CmdLineOpt, 1);
     var->hash_next = *slot;
-    var->hash = cmd_line_hash_from_string(string);
+    var->hash = u64_hash_from_str8(string);
     var->string = push_str8_copy(arena, string);
     var->value_strings = values;
     StringJoin join = {0};
@@ -83,28 +72,25 @@ cmd_line_from_string_list(Arena *arena, String8List command_line)
 {
   CmdLine parsed = {0};
   parsed.exe_name = command_line.first->string;
+  parsed.option_table_size = 64;
+  parsed.option_table = push_array(arena, CmdLineOpt *, parsed.option_table_size);
   
-  // NOTE(rjf): Set up config option table.
-  {
-    parsed.option_table_size = 4096;
-    parsed.option_table = push_array(arena, CmdLineOpt *, parsed.option_table_size);
-  }
-  
-  // NOTE(rjf): Parse command line.
+  //- rjf: parse options / inputs
   B32 after_passthrough_option = 0;
   B32 first_passthrough = 1;
   for(String8Node *node = command_line.first->next, *next = 0; node != 0; node = next)
   {
     next = node->next;
-    String8 option_name = node->string;
     
-    // NOTE(rjf): Look at --, -, or / (only on Windows) at the start of an
-    // argument to determine if it's a flag option. All arguments after a
+    //- rjf: look at --, -, or / (only on Windows) at the start of an
+    // argument to determine if it's a flag option. all arguments after a
     // single "--" (with no trailing string on the command line will be
-    // considered as input files.
-    B32 is_option = 1;
-    if(after_passthrough_option == 0)
+    // considered as passthrough input strings.
+    B32 is_option = 0;
+    String8 option_name = node->string;
+    if(!after_passthrough_option)
     {
+      is_option = 1;
       if(str8_match(node->string, str8_lit("--"), 0))
       {
         after_passthrough_option = 1;
@@ -128,69 +114,61 @@ cmd_line_from_string_list(Arena *arena, String8List command_line)
         is_option = 0;
       }
     }
-    else
-    {
-      is_option = 0;
-    }
     
-    // NOTE(rjf): This string is an option.
+    //- rjf: string is an option
     if(is_option)
     {
-      B32 has_arguments = 0;
-      U64 arg_signifier_position1 = str8_find_needle(option_name, 0, str8_lit(":"), 0);
-      U64 arg_signifier_position2 = str8_find_needle(option_name, 0, str8_lit("="), 0);
-      U64 arg_signifier_position = Min(arg_signifier_position1, arg_signifier_position2);
-      String8 arg_portion_this_string = str8_skip(option_name, arg_signifier_position+1);
-      if(arg_signifier_position < option_name.size)
+      // rjf: unpack option prefix
+      B32 has_values = 0;
+      U64 value_signifier_position1 = str8_find_needle(option_name, 0, str8_lit(":"), 0);
+      U64 value_signifier_position2 = str8_find_needle(option_name, 0, str8_lit("="), 0);
+      U64 value_signifier_position = Min(value_signifier_position1, value_signifier_position2);
+      String8 value_portion_this_string = str8_skip(option_name, value_signifier_position+1);
+      if(value_signifier_position < option_name.size)
       {
-        has_arguments = 1;
+        has_values = 1;
       }
-      option_name = str8_prefix(option_name, arg_signifier_position);
+      option_name = str8_prefix(option_name, value_signifier_position);
       
-      String8List arguments = {0};
-      
-      // NOTE(rjf): Parse arguments.
-      if(has_arguments)
+      // rjf: parse option's values
+      String8List values = {0};
+      if(has_values)
       {
         for(String8Node *n = node; n; n = n->next)
         {
           next = n->next;
-          
           String8 string = n->string;
           if(n == node)
           {
-            string = arg_portion_this_string;
+            string = value_portion_this_string;
           }
-          
           U8 splits[] = { ',' };
-          String8List args_in_this_string = str8_split(arena, string, splits, ArrayCount(splits), 0);
-          for(String8Node *sub_arg = args_in_this_string.first; sub_arg; sub_arg = sub_arg->next)
+          String8List values_in_this_string = str8_split(arena, string, splits, ArrayCount(splits), 0);
+          for(String8Node *sub_val = values_in_this_string.first; sub_val; sub_val = sub_val->next)
           {
-            str8_list_push(arena, &arguments, sub_arg->string);
+            str8_list_push(arena, &values, sub_val->string);
           }
           if(!str8_match(str8_postfix(n->string, 1), str8_lit(","), 0) &&
-             (n != node || arg_portion_this_string.size != 0))
+             (n != node || value_portion_this_string.size != 0))
           {
             break;
           }
         }
       }
       
-      // NOTE(rjf): Register config variable.
-      cmd_line_insert_opt(arena, &parsed, option_name, arguments);
+      // rjf: store
+      cmd_line_insert_opt(arena, &parsed, option_name, values);
     }
     
-    // NOTE(rjf): Default path, treat as a passthrough config option to be
-    // handled by tool-specific code.
+    //- rjf: default path - treat as a passthrough input
     else if(!str8_match(node->string, str8_lit("--"), 0) || !first_passthrough)
     {
       str8_list_push(arena, &parsed.inputs, node->string);
-      after_passthrough_option = 1;
       first_passthrough = 0;
     }
   }
   
-  // rjf: fill argc/argv
+  //- rjf: fill argc/argv
   parsed.argc = command_line.node_count;
   parsed.argv = push_array(arena, char *, parsed.argc);
   {
@@ -239,12 +217,12 @@ internal B32
 cmd_line_has_flag(CmdLine *cmd_line, String8 name)
 {
   CmdLineOpt *var = cmd_line_opt_from_string(cmd_line, name);
-  return(var != 0);
+  return (var != 0);
 }
 
 internal B32
 cmd_line_has_argument(CmdLine *cmd_line, String8 name)
 {
   CmdLineOpt *var = cmd_line_opt_from_string(cmd_line, name);
-  return(var != 0 && var->value_strings.node_count > 0);
+  return (var != 0 && var->value_strings.node_count > 0);
 }
diff --git a/src/base/base_command_line.h b/src/base/base_command_line.h
index 212d1022..3bb79cd0 100644
--- a/src/base/base_command_line.h
+++ b/src/base/base_command_line.h
@@ -39,9 +39,8 @@ struct CmdLine
 };
 
 ////////////////////////////////
-//~ NOTE(rjf): Command Line Option Parsing
+//~ rjf: Command Line Parsing Functions
 
-internal U64              cmd_line_hash_from_string(String8 string);
 internal CmdLineOpt**     cmd_line_slot_from_string(CmdLine *cmd_line, String8 string);
 internal CmdLineOpt*      cmd_line_opt_from_slot(CmdLineOpt **slot, String8 string);
 internal void             cmd_line_push_opt(CmdLineOptList *list, CmdLineOpt *var);
diff --git a/src/base/base_strings.c b/src/base/base_strings.c
index 9440dafa..70840acf 100644
--- a/src/base/base_strings.c
+++ b/src/base/base_strings.c
@@ -2484,3 +2484,26 @@ str8_deserial_read_block(String8 string, U64 off, U64 size, String8 *block_out)
   *block_out = str8_substr(string, range);
   return block_out->size;
 }
+
+////////////////////////////////
+//~ rjf: Basic String Hashes
+
+#if !defined(XXH_IMPLEMENTATION)
+# define XXH_IMPLEMENTATION
+# define XXH_STATIC_LINKING_ONLY
+# include "third_party/xxHash/xxhash.h"
+#endif
+
+internal U64
+u64_hash_from_seed_str8(U64 seed, String8 string)
+{
+  U64 result = XXH3_64bits_withSeed(string.str, string.size, seed);
+  return result;
+}
+
+internal U64
+u64_hash_from_str8(String8 string)
+{
+  U64 result = u64_hash_from_seed_str8(5381, string);
+  return result;
+}
diff --git a/src/base/base_strings.h b/src/base/base_strings.h
index ccf32592..7ab4679d 100644
--- a/src/base/base_strings.h
+++ b/src/base/base_strings.h
@@ -433,4 +433,10 @@ internal U64    str8_deserial_read_block(String8 string, U64 off, U64 size, Stri
 #define str8_deserial_read_array(string, off, ptr, count) str8_deserial_read((string), (off), (ptr), sizeof(*(ptr))*(count), sizeof(*(ptr)))
 #define str8_deserial_read_struct(string, off, ptr)       str8_deserial_read_array(string, off, ptr, 1)
 
+////////////////////////////////
+//~ rjf: Basic String Hashes
+
+internal U64 u64_hash_from_seed_str8(U64 seed, String8 string);
+internal U64 u64_hash_from_str8(String8 string);
+
 #endif // BASE_STRINGS_H
diff --git a/src/radbin/radbin.c b/src/radbin/radbin.c
index eed4141c..2c0714c4 100644
--- a/src/radbin/radbin.c
+++ b/src/radbin/radbin.c
@@ -811,6 +811,7 @@ rb_entry_point(CmdLine *cmdline)
       String8List dump = {0};
       for(RB_FileNode *n = input_files.first; n != 0; n = n->next)
       {
+        RB_File *f = n->v;
         // TODO(rjf)
       }
       
diff --git a/src/raddbg/raddbg_main.c b/src/raddbg/raddbg_main.c
index 2d486d4a..839d2ad1 100644
--- a/src/raddbg/raddbg_main.c
+++ b/src/raddbg/raddbg_main.c
@@ -499,20 +499,36 @@ entry_point(CmdLine *cmd_line)
       
       //- rjf: setup initial target from command line args
       {
-        String8List args = cmd_line->inputs;
-        if(args.node_count > 0 && args.first->string.size != 0)
+        Temp scratch = scratch_begin(0, 0);
+        String8List target_args = {0};
+        {
+          B32 after_first_non_flag = 0;
+          for(U64 idx = 1; idx < cmd_line->argc; idx += 1)
+          {
+            String8 arg = str8_cstring(cmd_line->argv[idx]);
+            if(!str8_match(str8_prefix(arg, 1), str8_lit("-"), 0) &&
+               !str8_match(str8_prefix(arg, 1), str8_lit("--"), 0) &&
+               !str8_match(str8_prefix(arg, 1), str8_lit("/"), 0))
+            {
+              after_first_non_flag = 1;
+            }
+            if(after_first_non_flag)
+            {
+              str8_list_push(scratch.arena, &target_args, arg);
+            }
+          }
+        }
+        if(target_args.node_count > 0 && target_args.first->string.size != 0)
         {
-          Temp scratch = scratch_begin(0, 0);
-          
           //- rjf: unpack command line inputs
           String8 executable_name_string = {0};
           String8 arguments_string = {0};
           String8 working_directory_string = {0};
           {
             // rjf: unpack full executable path
-            if(args.first->string.size != 0)
+            if(target_args.first->string.size != 0)
             {
-              String8 exe_name = args.first->string;
+              String8 exe_name = target_args.first->string;
               PathStyle style = path_style_from_str8(exe_name);
               if(style == PathStyle_Relative)
               {
@@ -524,9 +540,9 @@ entry_point(CmdLine *cmd_line)
             }
             
             // rjf: unpack working directory
-            if(args.first->string.size != 0)
+            if(target_args.first->string.size != 0)
             {
-              String8 path_part_of_arg = str8_chop_last_slash(args.first->string);
+              String8 path_part_of_arg = str8_chop_last_slash(target_args.first->string);
               if(path_part_of_arg.size != 0)
               {
                 String8 path = push_str8f(scratch.arena, "%S/", path_part_of_arg);
@@ -536,7 +552,7 @@ entry_point(CmdLine *cmd_line)
             
             // rjf: unpack arguments
             String8List passthrough_args_list = {0};
-            for(String8Node *n = args.first->next; n != 0; n = n->next)
+            for(String8Node *n = target_args.first->next; n != 0; n = n->next)
             {
               str8_list_push(scratch.arena, &passthrough_args_list, n->string);
             }
@@ -553,9 +569,9 @@ entry_point(CmdLine *cmd_line)
           rd_cfg_new(exe, executable_name_string);
           rd_cfg_new(args, arguments_string);
           rd_cfg_new(wdir, working_directory_string);
-          
-          scratch_end(scratch);
+          rd_cmd(RD_CmdKind_SelectTarget, .cfg = target->id);
         }
+        scratch_end(scratch);
       }
       
       //- rjf: set up shared resources for ipc to this instance; launch IPC signaler thread
diff --git a/src/ui/ui_core.c b/src/ui/ui_core.c
index 61ef2ed9..6f2bda61 100644
--- a/src/ui/ui_core.c
+++ b/src/ui/ui_core.c
@@ -15,13 +15,6 @@ thread_static UI_State *ui_state = 0;
 # include "third_party/xxHash/xxhash.h"
 #endif
 
-internal U64
-ui_hash_from_string(U64 seed, String8 string)
-{
-  U64 result = XXH3_64bits_withSeed(string.str, string.size, seed);
-  return result;
-}
-
 internal String8
 ui_hash_part_from_key_string(String8 string)
 {
@@ -68,7 +61,7 @@ ui_key_from_string(UI_Key seed_key, String8 string)
   if(string.size != 0)
   {
     String8 hash_part = ui_hash_part_from_key_string(string);
-    result.u64[0] = ui_hash_from_string(seed_key.u64[0], hash_part);
+    result.u64[0] = u64_hash_from_seed_str8(seed_key.u64[0], hash_part);
   }
   ProfEnd();
   return result;
diff --git a/src/ui/ui_core.h b/src/ui/ui_core.h
index f38b0a61..79c6f3e9 100644
--- a/src/ui/ui_core.h
+++ b/src/ui/ui_core.h
@@ -752,7 +752,6 @@ struct UI_State
 ////////////////////////////////
 //~ rjf: Basic Type Functions
 
-internal U64     ui_hash_from_string(U64 seed, String8 string);
 internal String8 ui_hash_part_from_key_string(String8 string);
 internal String8 ui_display_part_from_key_string(String8 string);
 internal UI_Key  ui_key_zero(void);