From af0a02a2de8fad56029cccbfeb6254a2c2169b51 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Sun, 20 Jul 2025 17:15:09 -0700
Subject: [PATCH] std.Io: delete FindByteWriter

dead
---
 lib/std/Io.zig                  |  3 ---
 lib/std/Io/find_byte_writer.zig | 40 ---------------------------------
 2 files changed, 43 deletions(-)
 delete mode 100644 lib/std/Io/find_byte_writer.zig

diff --git a/lib/std/Io.zig b/lib/std/Io.zig
index 1ccc9a4edc..9228a61287 100644
--- a/lib/std/Io.zig
+++ b/lib/std/Io.zig
@@ -462,9 +462,6 @@ pub const bitReader = @import("Io/bit_reader.zig").bitReader;
 pub const BitWriter = @import("Io/bit_writer.zig").BitWriter;
 pub const bitWriter = @import("Io/bit_writer.zig").bitWriter;
 
-pub const FindByteWriter = @import("Io/find_byte_writer.zig").FindByteWriter;
-pub const findByteWriter = @import("Io/find_byte_writer.zig").findByteWriter;
-
 pub const tty = @import("Io/tty.zig");
 
 /// A Writer that doesn't write to anything.
diff --git a/lib/std/Io/find_byte_writer.zig b/lib/std/Io/find_byte_writer.zig
deleted file mode 100644
index fe6836f603..0000000000
--- a/lib/std/Io/find_byte_writer.zig
+++ /dev/null
@@ -1,40 +0,0 @@
-const std = @import("../std.zig");
-const io = std.io;
-const assert = std.debug.assert;
-
-/// A Writer that returns whether the given character has been written to it.
-/// The contents are not written to anything.
-pub fn FindByteWriter(comptime UnderlyingWriter: type) type {
-    return struct {
-        const Self = @This();
-        pub const Error = UnderlyingWriter.Error;
-        pub const Writer = io.GenericWriter(*Self, Error, write);
-
-        underlying_writer: UnderlyingWriter,
-        byte_found: bool,
-        byte: u8,
-
-        pub fn writer(self: *Self) Writer {
-            return .{ .context = self };
-        }
-
-        fn write(self: *Self, bytes: []const u8) Error!usize {
-            if (!self.byte_found) {
-                self.byte_found = blk: {
-                    for (bytes) |b|
-                        if (b == self.byte) break :blk true;
-                    break :blk false;
-                };
-            }
-            return self.underlying_writer.write(bytes);
-        }
-    };
-}
-
-pub fn findByteWriter(byte: u8, underlying_writer: anytype) FindByteWriter(@TypeOf(underlying_writer)) {
-    return FindByteWriter(@TypeOf(underlying_writer)){
-        .underlying_writer = underlying_writer,
-        .byte = byte,
-        .byte_found = false,
-    };
-}