1 files changed, 26 insertions, 2 deletions
diff --git a/src/main.zig b/src/main.zig
index 5275ea28..2e75de3d 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -39,7 +39,11 @@ pub const debug = if (is_emscripten) struct {} else struct {
 };
 
 const help_text =
-    \\Usage: pardes [options]
+    \\Usage: pardes [options] [file|dir]
+    \\
+    \\With no arguments the shell pane starts in tty mode. A FILE argument
+    \\(optionally file:LINE) opens it focused beside a terminal on the launch
+    \\directory; a DIRECTORY argument becomes the cwd shells spawn in.
     \\
     \\Options:
     \\  --tty                  start as one shell pane already in tty mode
@@ -77,7 +81,10 @@ fn webMain() !void {
 
 fn nativeMain(init: std.process.Init) !void {
     var opts: pardes.Options = .{};
-    const args = try init.minimal.args.toSlice(init.arena.allocator());
+    const arena = init.arena.allocator();
+    const args = try init.minimal.args.toSlice(arena);
+    if (args.len == 1) opts.tty_only = true; // bare `pardes` boots straight into tty mode
+    var positional = false;
     var i: usize = 1;
     while (i < args.len) : (i += 1) {
         const a = args[i];
@@ -100,6 +107,23 @@ fn nativeMain(init: std.process.Init) !void {
         } else if (std.mem.eql(u8, a, "-h") or std.mem.eql(u8, a, "--help")) {
             try std.Io.File.stdout().writeStreamingAll(init.io, help_text);
             return;
+        } else if (a.len > 0 and a[0] != '-' and !positional) {
+            // one positional: a directory becomes the cwd shells spawn in
+            // (chdir succeeds only on dirs); anything else resolves as a file
+            positional = true;
+            if (std.c.chdir(a.ptr) != 0) {
+                var cwdbuf: [4096]u8 = undefined;
+                const cwd = std.c.getcwd(&cwdbuf, cwdbuf.len) orelse return error.BadArgs;
+                var realbuf: [4096]u8 = undefined;
+                switch (@import("look.zig").resolve(a, std.mem.span(@as([*:0]u8, @ptrCast(cwd))), &realbuf)) {
+                    .file => |t| {
+                        opts.file = try arena.dupe(u8, t.path);
+                        opts.file_line = t.line;
+                    },
+                    .image => |t| opts.file = try arena.dupe(u8, t.path),
+                    else => return error.BadArgs,
+                }
+            }
         } else {
             return error.BadArgs;
         }