From e96a016e3fe9b942e66d24dc95e484323767f357 Mon Sep 17 00:00:00 2001
From: Meghan Denny <hello@nektro.net>
Date: Sat, 30 May 2026 21:53:38 -0700
Subject: [PATCH] fmt: this enum behavior was super footgun-y

---
 fmt.zig | 23 +++++------------------
 1 file changed, 5 insertions(+), 18 deletions(-)

diff --git a/fmt.zig b/fmt.zig
index 09490170335b998486c6f6d4291015be03fbf653..a1e98b8e45978da6840e1d167c76b2f995913261 100644
--- a/fmt.zig
+++ b/fmt.zig
@@ -467,27 +467,14 @@ fn formatType(value: anytype, comptime fmt: []const u8, options: FormatOptions,
             return writer.writeAll(@errorName(value));
         },
         .@"enum" => |enumInfo| {
-            try writer.writeAll(@typeName(T));
-            if (enumInfo.is_exhaustive) {
-                if (actual_fmt.len != 0) invalidFmtError(fmt, value);
-                try writer.writeAll(".");
+            if (comptime std.mem.eql(u8, actual_fmt, "d")) {
+                try formatInt(@intFromEnum(value), 10, .lower, options, writer);
+                return;
+            }
+            if (comptime std.mem.eql(u8, actual_fmt, "s") and enumInfo.is_exhaustive) {
                 try writer.writeAll(@tagName(value));
                 return;
             }
-
-            // Use @tagName only if value is one of known fields
-            @setEvalBranchQuota(3 * enumInfo.fields.len);
-            inline for (enumInfo.fields) |enumField| {
-                if (@intFromEnum(value) == enumField.value) {
-                    try writer.writeAll(".");
-                    try writer.writeAll(@tagName(value));
-                    return;
-                }
-            }
-
-            try writer.writeAll("(");
-            try formatType(@intFromEnum(value), actual_fmt, options, writer, max_depth);
-            try writer.writeAll(")");
         },
         .@"union" => |info| {
             if (actual_fmt.len != 0) invalidFmtError(fmt, value);
-- 
2.54.0