fix bug with command palette selection being out of range

src/editor/editor.d

@@ -13,6 +13,7 @@ import std.stdio;
 import std.exception;
 import std.file;
 import std.string;
+import core.stdc.stdio;
 
 f32 g_delta = 0.0;
 debug bool g_frame_step = false;
@@ -733,40 +734,75 @@ HandleCmdMode(EditorCtx* ctx, InputEvent ev)
 	}
 	else if(prev_count != cmd.icount)
 	{
-		u64 start = cmd.current.name.length;
-		bool has_param;
-		for(u64 i = start; i < cmd.icount; i += 1)
-		{
-			if(cmd.buffer[i] != ' ')
-			{
-				start = i;
-				has_param = true;
-				break;
-			}
-		}
-
-		u8[] param = cmd.buffer[start .. cmd.icount];
-
 		switch(cmd.current.type) with(CT)
 		{
 			case OpenFile:
 				{
-					if(cmd.params.length == 0 || !has_param)
+					PopulateParams(cmd, ctx.file_names);
+				} break;
+			case SaveFile:
 				{
-						cmd.params = AllocArray!(Parameter)(&cmd.cmd_arena, ctx.file_names.length);
+					u8[] param = GetParam(cmd);
-						cmd.opt_strs = AllocArray!(u8[])(&cmd.cmd_arena, ctx.file_names.length);
+				} break;
+			default: break;
+		}
+	}
+
+CmdInputEnd:
+
+	if(cmd.selected >= cmd.opt_strs.length)
+	{
+		cmd.selected = 0;
+	}
+
+	return taken;
+}
+
+pragma(inline) void
+Check(CmdPalette* cmd, u64 length)
+{
+	if(cmd.icount+length >= cmd.buffer.length)
+	{
+		cmd.buffer = ReallocArray!(u8)(cmd.buffer, cmd.buffer.length*2);
+	}
+}
+
+u8[]
+GetParam(CmdPalette* cmd)
+{
+	u8[] param = [];
+	for(u64 i = cmd.current.name.length; i < cmd.icount; i += 1)
+	{
+		if(cmd.buffer[i] != ' ')
+		{
+			param = cmd.buffer[i .. cmd.icount];
+			break;
+		}
+	}
+
+	return param;
+}
+
+void
+PopulateParams(CmdPalette* cmd, u8[][] strs)
+{
+	u8[] param = GetParam(cmd);
+	if(cmd.params.length == 0 || !param.length)
+	{
+		cmd.params = AllocArray!(Parameter)(&cmd.cmd_arena, strs.length);
+		cmd.opt_strs = AllocArray!(u8[])(&cmd.cmd_arena, strs.length);
 
 		for(u64 i = 0; i < cmd.params.length; i += 1)
 		{
-							cmd.params[i].value   = ctx.file_names[i];
+			cmd.params[i].value   = strs[i];
 			cmd.params[i].visible = true;
 			cmd.opt_strs[i] = cmd.params[i].value;
 		}
 	}
 
-					if(has_param)
+	if(param.length)
 	{
-						cmd.opt_strs = AllocArray!(u8[])(&cmd.cmd_arena, ctx.file_names.length);
+		cmd.opt_strs = AllocArray!(u8[])(&cmd.cmd_arena, strs.length);
 
 		u64 matches;
 		for(u64 i = 0; i < cmd.params.length; i += 1)
@@ -783,23 +819,6 @@ HandleCmdMode(EditorCtx* ctx, InputEvent ev)
 
 		cmd.opt_strs = cmd.opt_strs[0 .. matches];
 	}
-				} break;
-			default: break;
-		}
-	}
-
-CmdInputEnd:
-
-	return taken;
-}
-
-pragma(inline) void
-Check(CmdPalette* cmd, u64 length)
-{
-	if(cmd.icount+length >= cmd.buffer.length)
-	{
-		cmd.buffer = ReallocArray!(u8)(cmd.buffer, cmd.buffer.length*2);
-	}
 }
 
 /*