1 files changed, 24 insertions, 0 deletions
diff --git a/txt.h b/txt.h
index 09d1c61..3f94c6d 100644
--- a/txt.h
+++ b/txt.h
@@ -33,6 +33,12 @@ typedef struct {
 } TxtLoc;
 
 typedef struct {
+	struct Txt *t;
+	u32 p0, i0;
+	u32 p1, i1;
+} TxtRange;
+
+typedef struct {
 	TxtPieceTbl v[TXT_HIST_MAX];
 	TxtLoc cur[TXT_HIST_MAX];
 	u32 i, n;
@@ -146,4 +152,22 @@ static inline TxtLoc cprev(TxtLoc l) {
 	return l;
 }
 
+static inline TxtRange txt_range(TxtLoc a, TxtLoc b) {
+	ASSERT(a.t == b.t);
+	if (txt_before(b, a))
+		return (TxtRange) { a.t, b.p, b.i, a.p, a.i };
+	else
+		return (TxtRange) { a.t, a.p, a.i, b.p, b.i };
+}
+
+static inline TxtRange txt_range_incl(TxtLoc a, TxtLoc b) {
+	if (txt_before(b, a)) {
+		TxtLoc t = a;
+		a = b;
+		b = t;
+	}
+	b = cnext(b);
+	return (TxtRange) { a.t, a.p, a.i, b.p, b.i };
+}
+
 #endif