From 9a4896c089d6678e5764122363ac0a47664deeba Mon Sep 17 00:00:00 2001
From: WormHeamer
Date: Sat, 3 Jan 2026 18:14:47 -0500
Subject: TxtHistNode distinct from TxtPieceTbl, with TxtLoc cur member

---
 txt.c |  9 ++++-----
 txt.h | 19 ++++++++++++-------
 2 files changed, 16 insertions(+), 12 deletions(-)

diff --git a/txt.c b/txt.c
index 07bd0bd..5d25aa8 100644
--- a/txt.c
+++ b/txt.c
@@ -242,7 +242,7 @@ void txt_load_empty(Txt *b) {
 
 static inline int txt_hist_unchanged(Txt *t) {
 	if (t->hist.n < 1) return 0;
-	TxtPieceTbl *pt = &t->hist.v[t->hist.i];
+	TxtHistNode *pt = &t->hist.v[t->hist.i];
 	if (t->ptbl.n != pt->n) return 0;
 	if (memcmp(pt->v, t->ptbl.v, sizeof(TxtPiece) * pt->n)) return 0;
 	return 1;
@@ -274,7 +274,7 @@ void txt_free(Txt *t) {
 
 void txt_hist_push(Txt *t, TxtLoc cur) {
 	if (txt_hist_unchanged(t)) {
-		t->hist.cur[t->hist.i] = cur;
+		t->hist.v[t->hist.i].cur = cur;
 		return;
 	}
 	if (t->hist.i + 1 < t->hist.n) t->hist.n = t->hist.i + 1;
@@ -282,7 +282,6 @@ void txt_hist_push(Txt *t, TxtLoc cur) {
 	if (t->hist.i == TXT_HIST_MAX) {
 		free(t->hist.v[0].v);
 		MOVE(&t->hist.v[0], &t->hist.v[1], TXT_HIST_MAX - 1);
-		MOVE(&t->hist.cur[0], &t->hist.cur[1], TXT_HIST_MAX - 1);
 		memset(&t->hist.v[TXT_HIST_MAX - 1], 0, sizeof(*t->hist.v));
 		t->hist.i--;
 		t->hist.n--;
@@ -291,7 +290,7 @@ void txt_hist_push(Txt *t, TxtLoc cur) {
 	memcpy(t->hist.v[t->hist.i].v, t->ptbl.v, sizeof(TxtPiece) * t->ptbl.n);
 	t->hist.v[t->hist.i].n = t->ptbl.n;
 	t->hist.v[t->hist.i].dirty = t->ptbl.dirty;
-	t->hist.cur[t->hist.i] = cur;
+	t->hist.v[t->hist.i].cur = cur;
 	t->hist.n++;
 	ASSERT(t->hist.n == t->hist.i + 1);
 }
@@ -301,7 +300,7 @@ int txt_hist_set(Txt *t, TxtLoc *cur) {
 	DA_FIT(&t->ptbl, t->ptbl.n);
 	memcpy(t->ptbl.v, t->hist.v[t->hist.i].v, sizeof(TxtPiece) * t->ptbl.n);
 	t->ptbl.dirty = t->hist.v[t->hist.i].dirty;
-	*cur = t->hist.cur[t->hist.i];
+	*cur = t->hist.v[t->hist.i].cur;
 	return 1;
 }
 
diff --git a/txt.h b/txt.h
index 3f94c6d..521111d 100644
--- a/txt.h
+++ b/txt.h
@@ -22,11 +22,6 @@ typedef struct {
 	u32 n, c;
 } TxtBuf;
 
-typedef struct {
-	DYNARR(TxtPiece);
-	int dirty;
-} TxtPieceTbl;
-
 typedef struct {
 	struct Txt *t;
 	u32 p, i;
@@ -39,8 +34,18 @@ typedef struct {
 } TxtRange;
 
 typedef struct {
-	TxtPieceTbl v[TXT_HIST_MAX];
-	TxtLoc cur[TXT_HIST_MAX];
+	DYNARR(TxtPiece);
+	int dirty;
+} TxtPieceTbl;
+
+typedef struct {
+	DYNARR(TxtPiece);
+	TxtLoc cur;
+	int dirty;
+} TxtHistNode;
+
+typedef struct {
+	TxtHistNode v[TXT_HIST_MAX];
 	u32 i, n;
 } TxtHist;
 
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