From eebc432646e95778836562fcf0c27a10e408d946 Mon Sep 17 00:00:00 2001
From: Altagos <jakob@altagos.dev>
Date: Mon, 16 Feb 2026 16:41:31 +0100
Subject: [PATCH] allow custom pretty fn

---
 example/main.zig | 11 +++++++++++
 pretty.zig       |  8 ++++++--
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/example/main.zig b/example/main.zig
index cd9d3dc..8e7be5d 100644
--- a/example/main.zig
+++ b/example/main.zig
@@ -23,6 +23,17 @@ const Gender = enum(u8) { male, female, nonbinary, other, _ };
 const Person = struct {
     age: u8,
     gender: ?Gender,
+
+    pub fn pretty(self: *const @This(), comptime ctx: pretty_mod.Context, run: *const pretty_mod.Runtime) !void {
+        run.setColor(ctx, .dim);
+        try run.write("AGE = ");
+        run.resetColor();
+        try run.print("{d}", .{self.age});
+        run.setColor(ctx, .dim);
+        try run.write(", GENDER = ");
+        run.resetColor();
+        try run.print("{?}", .{self.gender});
+    }
 };
 
 const Nested = struct {
diff --git a/pretty.zig b/pretty.zig
index b43e469..1afc475 100644
--- a/pretty.zig
+++ b/pretty.zig
@@ -147,7 +147,7 @@ pub fn PrettyWithOptions(comptime T: type, comptime options: Options) type {
     };
 }
 
-const Runtime = struct {
+pub const Runtime = struct {
     out: *Io.Writer,
     tty: Io.Terminal,
 
@@ -185,7 +185,7 @@ const Runtime = struct {
     }
 };
 
-const Context = struct {
+pub const Context = struct {
     depth: comptime_int = 0,
 
     options: Options,
@@ -213,6 +213,10 @@ fn innerFmt(
     if (!opts.skip_type_name)
         try printType(T, ctx, run, value);
 
+    if (std.meta.hasMethod(T, "pretty")) {
+        return value.pretty(ctx, run);
+    }
+
     return switch (info) {
         .bool => formatBool(ctx, run, value),
         .null => formatNull(ctx, run),
-- 
2.51.2