From d9881466382093f3c29ebe3f36a7d09d72407837 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Sun, 17 May 2026 20:59:36 -0700
Subject: [PATCH] std.process.Child: add format and success methods

---
 lib/std/process.zig       |  7 +++++++
 lib/std/process/Child.zig | 20 ++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/lib/std/process.zig b/lib/std/process.zig
index 9869bb2593ff21c864f599f95e9c2ae709ab4bab..bcee558a65eef07afab17b484cc012326bb5004c 100644
--- a/lib/std/process.zig
+++ b/lib/std/process.zig
@@ -1113,3 +1113,10 @@ test protectMemory {
     protectMemory(&test_page, .{}) catch return error.SkipZigTest;
     protectMemory(&test_page, .{ .read = true, .write = true }) catch return error.SkipZigTest;
 }
+
+test {
+    _ = Child;
+    _ = Args;
+    _ = Environ;
+    _ = Preopens;
+}
diff --git a/lib/std/process/Child.zig b/lib/std/process/Child.zig
index 65f6429e59f399fcb34137587d3f73ac9a35c24b..a3cba3e7ece8ff9e34c9998bb47ff816e2586e5e 100644
--- a/lib/std/process/Child.zig
+++ b/lib/std/process/Child.zig
@@ -96,6 +96,22 @@ pub const Term = union(enum) {
     signal: std.posix.SIG,
     stopped: std.posix.SIG,
     unknown: u32,
+
+    pub fn success(t: Term) bool {
+        return switch (t) {
+            .exited => |code| code == 0,
+            else => false,
+        };
+    }
+
+    pub fn format(t: Term, w: *Io.Writer) Io.Writer.Error!void {
+        switch (t) {
+            .exited => |code| return w.print("exited with code {d}", .{code}),
+            .signal => |sig| return w.print("terminated with signal {t}", .{sig}),
+            .stopped => |sig| return w.print("stopped with signal {t}", .{sig}),
+            .unknown => return w.writeAll("terminated unexpectedly"),
+        }
+    }
 };
 
 pub const Cwd = union(enum) {
@@ -135,3 +151,7 @@ pub fn wait(child: *Child, io: Io) WaitError!Term {
     assert(child.id != null);
     return io.vtable.childWait(io.userdata, child);
 }
+
+test {
+    _ = Term;
+}
-- 
2.54.0