string.nas: remove forgotten debug message

props.nas: replace some "arg[*]" by named args
aircraft.nas: load aircraft data only if the file exists (to avoid warning)
debug.nas: no space before colon & fixed comment & cosmetics

Nasal/aircraft.nas

@@ -411,8 +411,10 @@ var data = {
 		setlistener("/sim/signals/exit", func { me._save_() });
 	},
 	load : func {
-		printlog("warn", "trying to load aircraft data from ", me.path, " (OK if not found)");
-		io.read_properties(me.path, props.globals);
+		if (io.stat(me.path) != nil) {
+			printlog("info", "loading aircraft data from ", me.path);
+			io.read_properties(me.path, props.globals);
+		}
 	},
 	save : func(v = nil) {
 		me.loopid += 1;

Nasal/debug.nas

@@ -222,7 +222,7 @@ var string = func(o) {
 		var k = keys(o);
 		var s = "";
 		forindex (var i; k)
-			s ~= (i == 0 ? "" : ", ") ~ _dump_key(k[i]) ~ " : " ~ debug.string(o[k[i]]);
+			s ~= (i == 0 ? "" : ", ") ~ _dump_key(k[i]) ~ ": " ~ debug.string(o[k[i]]);
 		return _brace("{") ~ " " ~ s ~ " " ~ _brace("}");
 
 	} elsif (t == "ghost") {
@@ -292,17 +292,17 @@ var proptrace = func(root = "/", frames = 1) {
 
 
 ##
-# Executes function fun with repeat times prints execution
+# Executes function fn with repeat times prints execution
 # time in seconds. Examples:
 #
 #     var test = func { getprop("/sim/aircraft"); }
 #     debug.benchmark("test()/2", test, 1000);
 #     debug.benchmark("test()/2", func setprop("/sim/aircraft", ""), 1000);
 #
-var benchmark = func(label, fun, repeat = 1) {
+var benchmark = func(label, fn, repeat = 1) {
 	var start = systime();
 	for (var i = 0; i < repeat; i += 1)
-		fun();
+		fn();
 	print(_bench(sprintf(" %s --> %.6f s ", label, systime() - start)));
 }
 
@@ -315,7 +315,8 @@ var exit = func fgcommand("exit");
 # code that catches "exceptions" (by a die() call or errors). The Nasal
 # code doesn't abort in this case. Example:
 #
-#     call(func { possibly_buggy() }, nil, var err = []);
+#     var possibly_buggy = func { ... }
+#     call(possibly_buggy, nil, var err = []);
 #     debug.printerror(err);
 #
 var printerror = func(err) {

Nasal/props.nas

@@ -171,17 +171,17 @@ var copy = func(src, dest, attr = 0) {
 # Utility.  Turns any ghosts it finds (either solo, or in an
 # array) into Node objects.
 #
-var wrap = func {
-    argtype = typeof(arg[0]);
+var wrap = func(node) {
+    var argtype = typeof(node);
     if(argtype == "ghost") {
-        return wrapNode(arg[0]);
+        return wrapNode(node);
     } elsif(argtype == "vector") {
-        v = arg[0];
-        n = size(v);
+        var v = node;
+        var n = size(v);
         for(i=0; i<n; i+=1) { v[i] = wrapNode(v[i]); }
         return v;
     }
-    return arg[0];
+    return node;
 }
 
 ##
@@ -189,7 +189,7 @@ var wrap = func {
 # Node object and its _g (ghost) field set to the specified object.
 # Nasal's literal syntax can be pleasingly terse. I like that. :)
 #
-var wrapNode = func { { parents : [Node], _g : arg[0] } }
+var wrapNode = func(node) { { parents : [Node], _g : node } }
 
 ##
 # Global property tree.  Set once at initialization.  Is that OK?
@@ -204,16 +204,16 @@ var globals = wrapNode(_globals());
 # path under each node of that name to set (e.g. "throttle"), arg[2]
 # is the value.
 #
-var setAll = func {
-    node = props.globals.getNode(arg[0]);
-    if(node == nil) { return; }
-    name = node.getName();
+var setAll = func(base, child, value) {
+    var node = props.globals.getNode(base);
+    if(node == nil) return;
+    var name = node.getName();
     node = node.getParent();
-    if(node == nil) { return; }
-    children = node.getChildren();
-    foreach(c; children) {
-        if(c.getName() == name) {
-            c.getNode(arg[1], 1).setValue(arg[2]); }}
+    if(node == nil) return;
+    var children = node.getChildren();
+    foreach(c; children)
+        if(c.getName() == name)
+            c.getNode(child, 1).setValue(value);
 }
 
 ##

Nasal/string.nas

@@ -145,7 +145,6 @@ match = func(str, patt) {
 			continue;
 
 		} elsif (patt[p] == `[`) {
-			print("**setsize**");
 			setsize(var x = [], 256);
 			var invert = 0;
 			if ((p += 1) < size(patt) and patt[p] == `^`) {