Command modifier for in-place operation now "!" instead of "=", as inspired by Ruby.

pub/lib/commands.cpp

@@ -46,9 +46,9 @@ bool fridaCommand( string cmd )
 
     // Extract overwrite marker:
     NOlm::overwrite = 0;
-    if( cmd=="=" )
+    if( cmd=="!" )
         throw "overwrite marker = must immediately follow a command";
-    if ( cmd!="" && cmd[cmd.size()-1]=='=' ) {
+    if ( cmd!="" && cmd[cmd.size()-1]=='!' ) {
         NOlm::overwrite = 1;
         cmd.erase(cmd.size()-1,1);
     }
@@ -77,18 +77,13 @@ bool fridaCommand( string cmd )
             "  o    operate on variables, compute integrals, ...\n"
             "  r    read raw data (currently only for SPHERES)\n"
             "  _    special / temporary commands\n"
+            "Modifier (appended to command):\n"
+            "  !    operate in place (overwrite)\n"
             "More help:\n"
             "  \\h   help on meta commands and macros\n"
-            "  hm   command modifiers\n"
             "  hf   math operators and functions\n"
             ;
 
-    } else if (cmd == "hm") {
-        cout <<
-            "Command modifiers:\n"
-            "  <cmd>= overwrite the file instead of creating a new one\n"
-            ;
-
     } else if (cmd == "hf") {
         cout << NFunctions::list();