From 3ed6bbd8eb7214268d6e042736dcd5285cb4f4d7 Mon Sep 17 00:00:00 2001
From: WormHeamer
Date: Sun, 28 Dec 2025 19:46:16 -0500
Subject: add Txt pointer to TxtLoc

---
 txt.c | 10 +++++-----
 txt.h |  9 +++++----
 2 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/txt.c b/txt.c
index b3074aa..38f34c4 100644
--- a/txt.c
+++ b/txt.c
@@ -215,11 +215,11 @@ u32 txt_chr(Txt *t, TxtLoc l) {
 TxtLoc txt_at(Txt *b, u32 cur) {
 	for (u32 i = 0; i < b->ptbl.n; i++) {
 		if (cur < b->ptbl.v[i].n) {
-			return (TxtLoc) { i, cur };
+			return (TxtLoc) { b, i, cur };
 		}
 		cur -= b->ptbl.v[i].n;
 	}
-	return (TxtLoc) { b->ptbl.n - 1, b->ptbl.v[b->ptbl.n - 1].n };
+	return (TxtLoc) { b, b->ptbl.n - 1, b->ptbl.v[b->ptbl.n - 1].n };
 }
 
 u32 txt_ofs(Txt *b, TxtLoc l) {
@@ -244,11 +244,11 @@ TxtLoc txt_next(Txt *b, TxtLoc l) {
 
 TxtLoc txt_prev(Txt *b, TxtLoc l) {
 	if (l.i > 0) {
-		return (TxtLoc) { l.p, l.i - 1 };
+		return (TxtLoc) { b, l.p, l.i - 1 };
 	} else if (l.p > 0) {
-		return (TxtLoc) { l.p - 1, b->ptbl.v[l.p - 1].n - 1 };
+		return (TxtLoc) { b, l.p - 1, b->ptbl.v[l.p - 1].n - 1 };
 	} else {
-		return (TxtLoc) { 0, 0 };
+		return (TxtLoc) { b, 0, 0 };
 	}
 }
 
diff --git a/txt.h b/txt.h
index ccc71be..3af9970 100644
--- a/txt.h
+++ b/txt.h
@@ -18,16 +18,17 @@ typedef struct {
 	u32 n, c;
 } TxtBuf;
 
-typedef struct {
-	u32 p, i;
-} TxtLoc;
-
 typedef struct {
 	DYNARR(TxtPiece) ptbl;
 	TxtBuf buf[2];
 	u32 len;
 } Txt;
 
+typedef struct {
+	Txt *t;
+	u32 p, i;
+} TxtLoc;
+
 u32 txt_split_piece(Txt *b, u32 pi, u32 i);
 void txt_remove_piece(Txt *b, u32 pi);
 void txt_insert_piece(Txt *b, u32 pi, TxtBufIdx buf, u32 ofs, u32 n);
-- 
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