1 files changed, 11 insertions, 1 deletions

diff --git a/src/CanonData.zig b/src/CanonData.zig
index 5c1ffa6..144346c 100644
--- a/src/CanonData.zig
+++ b/src/CanonData.zig
@@ -5,6 +5,12 @@ const Data = struct {
     s2: []const @import("canon").Canonicalization = undefined,
 };
 
+// Canonicalization looks like this:
+// const Canonicalization = struct {
+//     len: u3 = 0,
+//     cps: [2]u21 = [_]u21{0} ** 2,
+// };
+
 const canon_data = canon_data: {
     const canon_ = @import("canon");
     break :canon_data Data{
@@ -17,7 +23,7 @@ const CanonData = @This();
 
 // There's a bug here, which is down to how static u21 vs. runtime are handled,
 // the "unique representation" claim is not working out.  AutoHash casts to bytes,
-// and that won't fly.  So we do this:
+// and that won't fly.  So we do a simple custom context which works for both.
 
 const Context = struct {
     pub fn hash(_: Context, cps: [2]u21) u64 {
@@ -52,3 +58,7 @@ const std = @import("std");
 const builtin = @import("builtin");
 const mem = std.mem;
 const comptime_map = @import("comptime_map.zig");
+
+test {
+    _ = comptime_map;
+}