From 950a616e45f76349c3f029e6032cce7cadc2b4e3 Mon Sep 17 00:00:00 2001
From: Gabriel Schneider <gbrls@0x4200.cafe>
Date: Mon, 27 Jul 2026 00:34:10 -0300
Subject: silence library std.log: ghostty-vt's unimplemented-sequence chatter
 was painting over the UI

---
 test/hxdiff.zig                |  6 ++++++
 test/snapshot.zig              |  8 ++++++++
 test/snapshots/logquiet.golden | 31 +++++++++++++++++++++++++++++++
 test/snapshots/logquiet.snap   | 16 ++++++++++++++++
 4 files changed, 61 insertions(+)
 create mode 100644 test/snapshots/logquiet.golden
 create mode 100644 test/snapshots/logquiet.snap

(limited to 'test')

diff --git a/test/hxdiff.zig b/test/hxdiff.zig
index dc901263..b04cc0b5 100644
--- a/test/hxdiff.zig
+++ b/test/hxdiff.zig
@@ -49,6 +49,12 @@ const std = @import("std");
 const libc = std.c;
 const pardes = @import("pardes");
 
+// Its own root, so src/main.zig's logFn does not apply here: the core it
+// drives feeds every case's text through ghostty-vt, which narrates each
+// sequence it does not implement. Cut the libraries back to errors; the
+// per-case report goes through std.debug, so a mismatch stays loud.
+pub const std_options: std.Options = .{ .log_level = .err };
+
 const gpa = std.heap.page_allocator;
 
 pub fn main(init: std.process.Init) !void {
diff --git a/test/snapshot.zig b/test/snapshot.zig
index 54ba0271..5417530d 100644
--- a/test/snapshot.zig
+++ b/test/snapshot.zig
@@ -32,6 +32,14 @@ const libc = std.c;
 const ghostty_vt = @import("ghostty-vt");
 const eh = @import("e2e_harness.zig");
 
+// This harness parses the app's output with its OWN ghostty-vt, which narrates
+// every sequence it does not implement — vaxis's startup capability probes
+// alone cost four `debug(stream)`/`warning(stream)`/`debug(kitty_gfx)` lines
+// per script, burying the PASS/FAIL report under 200 lines of chatter. Cut the
+// libraries back to errors; the report itself goes through std.debug, so a
+// failure stays loud either way.
+pub const std_options: std.Options = .{ .log_level = .err };
+
 extern "c" fn setenv(name: [*:0]const u8, value: [*:0]const u8, overwrite: c_int) c_int;
 extern "c" fn execvp(file: [*:0]const u8, argv: [*:null]const ?[*:0]const u8) c_int;
 
diff --git a/test/snapshots/logquiet.golden b/test/snapshots/logquiet.golden
new file mode 100644
index 00000000..86b1567a
--- /dev/null
+++ b/test/snapshots/logquiet.golden
@@ -0,0 +1,31 @@
+== snap quiet grid=100x30 cursor=62,4
+|Kill Newcol Tutor Debug Colors NextColor Crt Dump
+|  TTY /tmp/pardes-snap/logquiet/cwd Del
+|  $ ls
+|  $ printf '\033_Ga=q,i=1,s=1,v=1,f=24,t=d;AAAA\033\\\033[>0p'
+|  $ '\033_Ga=q,i=1,s=1,v=1,f=24,t=d;AAAA\033\\\033[>0p'Gi=1;OK
+|
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diff --git a/test/snapshots/logquiet.snap b/test/snapshots/logquiet.snap
new file mode 100644
index 00000000..02d52495
--- /dev/null
+++ b/test/snapshots/logquiet.snap
@@ -0,0 +1,16 @@
+# ghostty-vt narrates every sequence it does not implement through std.log,
+# and a pardes child's stderr is this pty — so a library log line lands on the
+# rendered grid, exactly where it does on a real user's terminal. The two
+# sequences below are the cheapest ones that trip it: a kitty graphics query
+# (`debug(kitty_gfx): executing kitty graphics command`) and a private CSI p
+# (`warning(stream): ignoring unimplemented CSI p with intermediates: >`).
+# The golden is the assertion that neither reaches the screen.
+start 30 100 -n 1
+wait 8000 Kill Newcol
+stable 700 20000
+key c-b
+stable 600 8000
+text printf '\033_Ga=q,i=1,s=1,v=1,f=24,t=d;AAAA\033\\\033[>0p'
+key enter
+stable 700 20000
+snap quiet
-- 
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