diff --git a/build.zig.zon b/build.zig.zon
index cb077768d..addfacb16 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -41,6 +41,10 @@
             .hash = "ziglyph-0.11.2-AAAAAHPtHwB4Mbzn1KvOV7Wpjo82NYEc_v0WC8oCLrkf",
             .lazy = true,
         },
+        .uucode = .{
+            .url = "https://github.com/jacobsandlund/uucode/archive/fdcd8582f050e3054091d3ce3c60bf7a78bc8830.tar.gz",
+            .hash = "uucode-0.0.0-ZZjBPpnZOgCLQD3BsYbQ4N6dGqR3CRKlOngOBB3YEU_j",
+        },
         .zig_wayland = .{
             // codeberg ifreund/zig-wayland
             .url = "https://codeberg.org/ifreund/zig-wayland/archive/f3c5d503e540ada8cbcb056420de240af0c094f7.tar.gz",
diff --git a/src/build/SharedDeps.zig b/src/build/SharedDeps.zig
index c03746a48..543c87df2 100644
--- a/src/build/SharedDeps.zig
+++ b/src/build/SharedDeps.zig
@@ -15,6 +15,7 @@ help_strings: HelpStrings,
 metallib: ?*MetallibStep,
 unicode_tables: UnicodeTables,
 framedata: GhosttyFrameData,
+uucode_table_data: std.Build.LazyPath,
 
 /// Used to keep track of a list of file sources.
 pub const LazyPathList = std.ArrayList(std.Build.LazyPath);
@@ -25,6 +26,24 @@ pub fn init(b: *std.Build, cfg: *const Config) !SharedDeps {
         .help_strings = try .init(b, cfg),
         .unicode_tables = try .init(b),
         .framedata = try .init(b),
+        .uucode_table_data = b.dependency("uucode", .{
+            .@"table_configs.zig" = @as(
+                []const u8,
+                \\const types = @import("types.zig");
+                \\const config = @import("config.zig");
+                \\
+                \\pub const configs = [_]types.TableConfig{
+                \\    .override(&config.default, .{
+                \\        .fields = &.{"case_folding_simple"},
+                \\    }),
+                \\    .override(&config.default, .{
+                \\        .fields = &.{"alphabetic","lowercase","uppercase"},
+                \\    }),
+                \\};
+                \\
+                ,
+            ),
+        }).namedLazyPath("table_data.zig"),
 
         // Setup by retarget
         .options = undefined,
@@ -415,6 +434,13 @@ pub fn add(
     })) |dep| {
         step.root_module.addImport("ziglyph", dep.module("ziglyph"));
     }
+    if (b.lazyDependency("uucode", .{
+        .target = target,
+        .optimize = optimize,
+        .@"table_data.zig" = self.uucode_table_data,
+    })) |dep| {
+        step.root_module.addImport("uucode", dep.module("uucode"));
+    }
     if (b.lazyDependency("zf", .{
         .target = target,
         .optimize = optimize,
diff --git a/src/global.zig b/src/global.zig
index e68ec7f74..6d0aa655d 100644
--- a/src/global.zig
+++ b/src/global.zig
@@ -10,6 +10,7 @@ const oni = @import("oniguruma");
 const crash = @import("crash/main.zig");
 const renderer = @import("renderer.zig");
 const apprt = @import("apprt.zig");
+const uucode = @import("uucode");
 
 /// We export the xev backend we want to use so that the rest of
 /// Ghostty can import this once and have access to the proper
@@ -54,6 +55,11 @@ pub const GlobalState = struct {
         //     std.log.err("[global init time] start={}us duration={}ns", .{ start_micro, end.since(start) / std.time.ns_per_us });
         // }
 
+        std.log.err("XXX Uucode testing: {d}, {}\n", .{
+            uucode.case_folding_simple(65),
+            uucode.alphabetic(97),
+        });
+
         // Initialize ourself to nothing so we don't have any extra state.
         // IMPORTANT: this MUST be initialized before any log output because
         // the log function uses the global state.