diff --git a/src/image.zig b/src/image.zig
index 0e9c775..3e38903 100644
--- a/src/image.zig
+++ b/src/image.zig
@@ -131,6 +131,7 @@ pub const Image = struct {
     /// Open a BMP image for later.
     pub fn open(allocator: *std.mem.Allocator, path: []const u8) !*Image {
         var in_fmt = mkSfInfo();
+
         var sndfile = try sopen(allocator, path, c.SFM_READ, &in_fmt);
         var image = try allocator.create(Image);
 
@@ -148,26 +149,6 @@ pub const Image = struct {
         return image;
     }
 
-    pub fn clone(self: *Image) !*Image {
-        var in_fmt = mkSfInfo();
-        // clone sndfile
-        var sndfile = try sopen(self.allocator, self.curpath, c.SFM_READ, &in_fmt);
-        var image = try self.allocator.create(Image);
-
-        std.debug.assert(in_fmt.frames > i64(0));
-        std.debug.assert(in_fmt.seekable == i32(1));
-
-        image.* = Image{
-            .allocator = self.allocator,
-            .sndfile = sndfile,
-            .path = self.path,
-            .curpath = self.curpath,
-            .frames = @intCast(usize, in_fmt.frames),
-        };
-
-        return image;
-    }
-
     pub fn close(self: *Image) void {
         //self.allocator.free(self.path);
         //self.allocator.free(self.curpath);
diff --git a/src/lang.zig b/src/lang.zig
index 9724dfb..3af632c 100644
--- a/src/lang.zig
+++ b/src/lang.zig
@@ -3,8 +3,10 @@ const std = @import("std");
 const plugin = @import("plugin.zig");
 
 pub const ParseError = error{
-    OutOfMemory,
+    NoCommandGiven,
+    UnknownCommand,
     ArgRequired,
+    FloatParseFail,
     ParseFail,
 };
 
@@ -158,11 +160,6 @@ pub const Lang = struct {
         self.keywords.deinit();
     }
 
-    pub fn reset(self: *Lang) void {
-        self.has_error = false;
-        self.line = 0;
-    }
-
     fn fillKeywords(self: *Lang) !void {
         _ = try self.keywords.put("noop", .Noop);
         _ = try self.keywords.put("load", .Load);
@@ -264,7 +261,7 @@ pub const Lang = struct {
 
     fn expectAny(self: *Lang, count: usize, args: ArgList) !void {
         if (args.len != count) {
-            self.doError("expected {} arguments, found {}", count, args.len);
+            std.debug.warn("expected {} arguments, found {}\n", count, args.len);
             return error.ArgRequired;
         }
     }
@@ -277,7 +274,7 @@ pub const Lang = struct {
         var i: usize = 0;
 
         if (args.len != count) {
-            self.doError("expected {} arguments, found {}", count, args.len);
+            std.debug.warn("expected {} arguments, found {}\n", count, args.len);
             return error.ArgRequired;
         }
 
@@ -322,7 +319,7 @@ pub const Lang = struct {
         self.has_error = true;
     }
 
-    pub fn parse(self: *Lang, data: []const u8) ParseError!CommandList {
+    pub fn parse(self: *Lang, data: []const u8) !CommandList {
         var splitted_it = std.mem.separate(data, ";");
         try self.fillKeywords();
         var cmds = CommandList.init(self.allocator);
@@ -362,7 +359,7 @@ pub const Lang = struct {
             // construct final Command based on command
             var cmd = Command{ .command = ctype, .args = args };
             self.validateCommand(cmd) catch |err| {
-                //self.doError("error validating command '{}': {}", command, err);
+                self.doError("Unknown command '{}' (length {})", command, command.len);
                 continue;
             };
 
diff --git a/src/main.zig b/src/main.zig
index be034f9..156855e 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -1,122 +1,12 @@
 const std = @import("std");
 const langs = @import("lang.zig");
 const runners = @import("runner.zig");
-const printer = @import("printer.zig");
 
 test "scritcher" {
     _ = @import("lang.zig");
     _ = @import("runner.zig");
 }
 
-fn wrapInCmdList(allocator: *std.mem.Allocator, cmd: langs.Command) !langs.CommandList {
-    var cmds = langs.CommandList.init(allocator);
-    try cmds.append(cmd);
-    return cmds;
-}
-
-pub fn doRepl(allocator: *std.mem.Allocator, args_it: var) !void {
-    var stdout_file = try std.io.getStdOut();
-    const stdout = &stdout_file.outStream().stream;
-
-    const scri_path = try (args_it.next(allocator) orelse @panic("expected scri path"));
-
-    var file = try std.fs.File.openWrite(scri_path);
-    defer file.close();
-
-    var out = file.outStream();
-    var stream = &out.stream;
-
-    // the thing here is that 'load :0' would load the scri_path, since we
-    // now have a 'repl' argument right before it. to counteract that, the
-    // initial repl buffer contains 'load :1' instead.
-
-    var loadargs = langs.ArgList.init(allocator);
-    defer loadargs.deinit();
-    try loadargs.append(":1");
-
-    var cmds = try wrapInCmdList(allocator, langs.Command{
-        .command = .Load,
-        .args = loadargs,
-    });
-
-    defer cmds.deinit();
-
-    // we keep
-    //  - a CommandList with the full commands we have right now
-    //  - a Command with the current last typed successful command
-
-    //  - one runner that contains the current full state of the image
-    //     as if the current cmds was ran over it (TODO better wording)
-    //  - one runner that gets copied from the original on every new
-    //    command the user issues
-
-    var lang = langs.Lang.init(allocator);
-    defer lang.deinit();
-
-    var current: langs.Command = undefined;
-
-    var runner = runners.Runner.init(allocator);
-    defer runner.deinit();
-
-    // run the load command
-    try runner.runCommands(cmds, true);
-
-    var runqs_args = langs.ArgList.init(allocator);
-    defer runqs_args.deinit();
-
-    // TODO change the runqs command to something given in an env var
-    try runqs_args.append("ristretto");
-
-    while (true) {
-        lang.reset();
-        try stdout.print("> ");
-
-        var buffer = try std.Buffer.init(allocator, ""[0..]);
-        var line = std.io.readLine(&buffer) catch |err| {
-            if (err == error.EndOfStream) break;
-            return err;
-        };
-
-        if (std.mem.eql(u8, line, "push")) {
-            try cmds.append(current);
-
-            // run the current added command to main cmds list
-            // with the main parent runner
-            var cmds_wrapped = try wrapInCmdList(allocator, current);
-            defer cmds_wrapped.deinit();
-            try runner.runCommands(cmds_wrapped, true);
-
-            continue;
-        } else if (std.mem.eql(u8, line, "list")) {
-            try printer.printList(cmds, stdout);
-            continue;
-        } else if (std.mem.eql(u8, line, "save")) {
-            try file.seekTo(0);
-            try printer.printList(cmds, stream);
-            continue;
-        }
-
-        var cmds_parsed = lang.parse(line) catch |err| {
-            std.debug.warn("repl: error while parsing: {}\n", err);
-            continue;
-        };
-        current = cmds_parsed.at(0);
-
-        // by cloning the parent runner, we can iteratively write
-        // whatever command we want and only commit the good results
-        // back to the parent runner
-        var runner_clone = try runner.clone();
-        defer runner_clone.deinit();
-
-        try cmds_parsed.append(langs.Command{
-            .command = .RunQS,
-            .args = runqs_args,
-        });
-
-        try runner_clone.runCommands(cmds_parsed, true);
-    }
-}
-
 pub fn main() !void {
     const allocator = std.heap.direct_allocator;
 
@@ -128,15 +18,9 @@ pub fn main() !void {
 
     var args_it = std.process.args();
 
-    // TODO print help
-
     _ = try (args_it.next(allocator) orelse @panic("expected exe name"));
     const scri_path = try (args_it.next(allocator) orelse @panic("expected scri path"));
 
-    if (std.mem.eql(u8, scri_path, "repl")) {
-        return try doRepl(allocator, &args_it);
-    }
-
     var file = try std.fs.File.openRead(scri_path);
     defer file.close();
 
diff --git a/src/printer.zig b/src/printer.zig
deleted file mode 100644
index 2a30f8e..0000000
--- a/src/printer.zig
+++ /dev/null
@@ -1,39 +0,0 @@
-const langs = @import("lang.zig");
-
-pub fn printList(list: langs.CommandList, stream: var) !void {
-    for (list.toSlice()) |cmd| {
-        var command = switch (cmd.command) {
-            .Noop => "noop",
-            .Load => "load",
-            .Quicksave => "quicksave",
-            .RunQS => "runqs",
-
-            .Amp => "amp",
-            .RFlanger => "rflanger",
-            .Eq => "eq",
-            .Phaser => "phaser",
-            .Mbeq => "mbeq",
-            .Chorus => "chorus",
-            .PitchScaler => "pitchscaler",
-            .Reverb => "reverb",
-            .Highpass => "highpass",
-            .Delay => "delay",
-            .Vinyl => "vinyl",
-            .RevDelay => "revdelay",
-
-            .Noise => "noise",
-            .WildNoise => "wildnoise",
-            .Write => "write",
-
-            .Rotate => "rotate",
-        };
-
-        try stream.print("{}", command);
-
-        for (cmd.args.toSlice()) |arg| {
-            try stream.print(" {}", arg);
-        }
-
-        try stream.write(";\n");
-    }
-}
diff --git a/src/runner.zig b/src/runner.zig
index 072e38b..a348f22 100644
--- a/src/runner.zig
+++ b/src/runner.zig
@@ -33,11 +33,6 @@ pub const Runner = struct {
         }
     }
 
-    pub fn clone(self: *Runner) !Runner {
-        var cloned_image = if (self.image) |image| try image.clone() else null;
-        return Runner{ .allocator = self.allocator, .image = cloned_image };
-    }
-
     fn resolveArg(self: *Runner, load_path: []const u8) ![]const u8 {
         if (load_path[0] == ':') {
             // parse the index from 1 to end
@@ -178,7 +173,7 @@ pub const Runner = struct {
         );
         defer proc.deinit();
 
-        std.debug.warn("running '{} {}'\n", program, out_path);
+        std.debug.warn("running '{} {}'", program, out_path);
         _ = try proc.spawnAndWait();
     }