From d9f71e20bb5330bf9e0eac29a0d74b8fdd7dfa0e Mon Sep 17 00:00:00 2001
From: Nate Moore <git@natemoo.re>
Date: Fri, 5 Jun 2026 01:11:14 -0500
Subject: [PATCH] fix: leave terminal default foreground for uncolored text

Text with no explicit color was packed as concrete white
(0xFFFFFFFF), forcing white on light-background terminals. Encode
absent color as ATTR_DEFAULT (0x80 in the attrs byte) so the C path
skips the foreground SGR entirely, mirroring how an unset background
is already left alone.

Fixes #62
---
 ops.ts | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/ops.ts b/ops.ts
index a52485d..776bfed 100644
--- a/ops.ts
+++ b/ops.ts
@@ -202,14 +202,18 @@ export function pack(
       case OP_TEXT: {
         view.setUint32(o, OP_TEXT, true);
         o += 4;
-        view.setUint32(o, op.color ?? 0xFFFFFFFF, true);
+        // No explicit color: leave the terminal default foreground by writing
+        // 0 and setting ATTR_DEFAULT (0x80 in the attrs byte). The C path ORs
+        // it into fg and emit_attr skips the foreground SGR (mirrors unset bg).
+        let textDefault = op.color === undefined;
+        view.setUint32(o, op.color ?? 0, true);
         o += 4;
         view.setUint32(
           o,
           (op.fontSize ?? 1) |
             ((op.fontId ?? 0) << 8) |
             ((op.wrap ?? 0) << 16) |
-            ((op.attrs ?? 0) << 24),
+            (((op.attrs ?? 0) | (textDefault ? 0x80 : 0)) << 24),
           true,
         );
         o += 4;
-- 
2.51.2