sdl: main + tests additions

1 files changed, 15 insertions, 0 deletions

diff --git a/main.zig b/main.zig
index 3db83d94..732a4710 100644
--- a/main.zig
+++ b/main.zig
@@ -481,9 +481,24 @@ fn forkTerm(gpa: std.mem.Allocator, init_cols: u16, init_rows: u16, cwd: ?[*:0]c
         .rows = init_rows,
     };
     t.stream = t.term.vtStream();
+    // Answer terminal QUERIES back into the pty. Apps (nushell/reedline, helix, fzf
+    // — anything on crossterm) send a DSR cursor-position report (ESC[6n) at startup
+    // and BLOCK waiting for the reply. ghostty computes the reply but drops it unless
+    // this effect is wired, so the app spins forever ("nushell never opens"). Only
+    // real terminals need it (file/image stubs read no pty). See ptyReport.
+    t.stream.handler.effects.write_pty = ptyReport;
     return t;
 }
 
+// ghostty calls this with a reply (cursor-position report, operating status, ...)
+// to send back to the child. The handler's `terminal` is our Term.term field, so
+// recover the owning Term and echo the bytes into its pty as if the child typed
+// them. termWrite no-ops on a closed pty, so a late report after EOF is harmless.
+fn ptyReport(handler: *ghostty_vt.TerminalStream.Handler, data: [:0]const u8) void {
+    const t: *Term = @fieldParentPtr("term", handler.terminal);
+    termWrite(t, data);
+}
+
 // peel a trailing :NNN (or :NNN:) line suffix: main.zig:100 -> {main.zig, 100}.
 fn parsePathLine(tok: []const u8) struct { path: []const u8, line: usize } {
     var sep: usize = 0;