From 8ff0cf67e113dd94eaa4f2cb9aa7afdac56e9633 Mon Sep 17 00:00:00 2001
From: Dave Gauer <dave@ratfactor.com>
Date: Sun, 7 Nov 2021 20:51:33 -0500
Subject: Added ex91 - closing in on async!

---
 build.zig                        |  4 ++++
 exercises/091_async8.zig         | 35 +++++++++++++++++++++++++++++++++++
 patches/patches/091_async8.patch | 16 ++++++++++++++++
 3 files changed, 55 insertions(+)
 create mode 100644 exercises/091_async8.zig
 create mode 100644 patches/patches/091_async8.patch

diff --git a/build.zig b/build.zig
index dd6ee1a..5a55694 100644
--- a/build.zig
+++ b/build.zig
@@ -443,6 +443,10 @@ const exercises = [_]Exercise{
         .main_file = "090_async7.zig",
         .output = "beef? BEEF!",
     },
+    .{
+        .main_file = "091_async8.zig",
+        .output = "ABCDEF",
+    },
 };
 
 /// Check the zig version to make sure it can compile the examples properly.
diff --git a/exercises/091_async8.zig b/exercises/091_async8.zig
new file mode 100644
index 0000000..cd9c975
--- /dev/null
+++ b/exercises/091_async8.zig
@@ -0,0 +1,35 @@
+//
+// You have doubtless noticed that 'suspend' requires a block
+// expression like so:
+//
+//     suspend {}
+//
+// The suspend block executes when a function suspends. To get
+// sense for when this happens, please make the following
+// program print the string
+//
+//     "ABCDEF"
+//
+const print = @import("std").debug.print;
+
+pub fn main() void {
+    print("A", .{});
+
+    var frame = async suspendable();
+
+    print("X", .{});
+
+    resume frame;
+
+    print("F", .{});
+}
+
+fn suspendable() void {
+    print("X", .{});
+
+    suspend {
+        print("X", .{});
+    }
+
+    print("X", .{});
+}
diff --git a/patches/patches/091_async8.patch b/patches/patches/091_async8.patch
new file mode 100644
index 0000000..8a93b31
--- /dev/null
+++ b/patches/patches/091_async8.patch
@@ -0,0 +1,16 @@
+20c20
+<     print("X", .{});
+---
+>     print("D", .{});
+28c28
+<     print("X", .{});
+---
+>     print("B", .{});
+31c31
+<         print("X", .{});
+---
+>         print("C", .{});
+34c34
+<     print("X", .{});
+---
+>     print("E", .{});
-- 
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