From 04a24211a6e5d98c982dcc8b2b4e22f9c2ca27e2 Mon Sep 17 00:00:00 2001
From: Jean-Marc Lasgouttes <lasgouttes@lyx.org>
Date: Mon, 6 Nov 2023 11:53:03 +0100
Subject: [PATCH] Fix word selection expansion when going to the left

The proper way to do word-wise selection is to compute the words
around both the cursor and the anchor.

Note that code is uglier than it should because CursorData::normalAnchor()
returns a CursorSlice instead of a DocIterator.

Fixes bug #12533.
---
 src/Cursor.h |  1 +
 src/Text.cpp | 19 +++++++++++++++----
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/Cursor.h b/src/Cursor.h
index 50a633ba98..e362073ef4 100644
--- a/src/Cursor.h
+++ b/src/Cursor.h
@@ -137,6 +137,7 @@ public:
 	int countInsetsInSelection(InsetCode const & inset) const;
 
 	/// access to normalized selection anchor
+	// FIXME: this should return a full DocIterator
 	CursorSlice normalAnchor() const;
 	/// access to real selection anchor
 	DocIterator const & realAnchor() const { return anchor_; }
diff --git a/src/Text.cpp b/src/Text.cpp
index 93ccf2ac99..8c8c0bf40a 100644
--- a/src/Text.cpp
+++ b/src/Text.cpp
@@ -1410,11 +1410,22 @@ void Text::expandWordSel(Cursor & cur)
 	Cursor c = cur;
 	c.selection(false);
 	c.text()->selectWord(c, WHOLE_WORD);
+	// get selection around anchor too.
+	// FIXME: this cursor is not a proper one. normalAnchor() should
+	// return a DocIterator.
+	Cursor a(cur.bv());
+	a.push_back(cur.normalAnchor());
+	a.text()->selectWord(a, WHOLE_WORD);
 	// use the correct word boundary, depending on selection direction
-	if (cur.top() > cur.normalAnchor())
-		cur.pos() = c.selEnd().pos();
-	else
-		cur.pos() = c.selBegin().pos();
+	if (cur.top() > cur.normalAnchor()) {
+		cur.top() = a.selBegin();
+		cur.resetAnchor();
+		cur.top() = c.selEnd();
+	} else {
+		cur.top() = a.selEnd();
+		cur.resetAnchor();
+		cur.top() = c.selBegin();
+	}
 }