[LyX/master] Fix bug #12373

[Enrico Forestieri]

commit 9ae002b69f5ae140448b71f8b41ce8797f328468
Author: Enrico Forestieri <forenr at lyx.org>
Date:   Fri Sep 24 10:15:58 2021 +0200

    Fix bug #12373
    
    Do not perform any autocorrection in the presence of a selection.
---
 src/mathed/InsetMathNest.cpp |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/mathed/InsetMathNest.cpp b/src/mathed/InsetMathNest.cpp
index 01719e5..9210886 100644
--- a/src/mathed/InsetMathNest.cpp
+++ b/src/mathed/InsetMathNest.cpp
@@ -1666,7 +1666,7 @@ void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
 bool InsetMathNest::interpretChar(Cursor & cur, char_type const c)
 {
         // try auto-correction
-        if (lyxrc.autocorrection_math && cur.pos() != 0
+        if (lyxrc.autocorrection_math && cur.pos() != 0 && !cur.selection()
                   && math_autocorrect(cur, c))
                 return true;