[LyX/2.4.x] Fix crash when attempting to search in selection that contains only math

[Juergen Spitzmueller]

commit f8949079ef77dab309091a9c86f34f931af762a8
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Mon Jul 15 17:41:10 2024 +0200

    Fix crash when attempting to search in selection that contains only math
    
    (cherry picked from commit cca68d0614269edfc256db82b3849afde4640dd7)
---
 src/lyxfind.cpp | 4 ++--
 status.24x      | 3 +++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/lyxfind.cpp b/src/lyxfind.cpp
index aae8b30bff..f72169ae66 100644
--- a/src/lyxfind.cpp
+++ b/src/lyxfind.cpp
@@ -240,7 +240,7 @@ int findForward(DocIterator & cur, DocIterator const endcur,
 		bool find_del = true, bool onlysel = false)
 {
 	for (; cur; cur.forwardChar()) {
-		if (onlysel && endcur.pit() == cur.pit()
+		if (onlysel && cur.inTexted() && endcur.pit() == cur.pit()
 		    && endcur.idx() == cur.idx() && endcur.pos() < cur.pos())
 			break;
 		if (cur.inTexted()) {
@@ -259,7 +259,7 @@ int findBackwards(DocIterator & cur, DocIterator const endcur,
 {
 	while (cur) {
 		cur.backwardChar();
-		if (onlysel && endcur.pit() == cur.pit()
+		if (onlysel && cur.inTexted() && endcur.pit() == cur.pit()
 		    && endcur.idx() == cur.idx() && endcur.pos() > cur.pos())
 			break;
 		if (cur.inTexted()) {
diff --git a/status.24x b/status.24x
index 6414a40abb..aa1cc68f41 100644
--- a/status.24x
+++ b/status.24x
@@ -49,6 +49,8 @@ What's new
 
 * USER INTERFACE
 
+- Fix crash when attempting to search in selection that contains only math.
+
 - Fix bug where the dialog asking for saving unapplied changes on buffer change
   popped up twice, or sometimes not at all (bug 12954).
 
@@ -87,3 +89,4 @@ What's new
 * BUILD/INSTALLATION
 
 - Fix 'make install' target for autotools builds with autoconf >= 2.72.
+