[LyX/master] Consider case (in)sensitivity when querying special char insets

[Juergen Spitzmueller]

commit ab1cc8e1c2ab05819e3f86e6cf989e1bf312ac18
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Wed Feb 17 15:50:54 2021 +0100

    Consider case (in)sensitivity when querying special char insets
---
 src/Paragraph.cpp |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/Paragraph.cpp b/src/Paragraph.cpp
index 7b0120a..aca858c 100644
--- a/src/Paragraph.cpp
+++ b/src/Paragraph.cpp
@@ -4502,10 +4502,12 @@ int Paragraph::find(docstring const & str, bool cs, bool mw,
 				break;
 			odocstringstream os;
 			inset->toString(os);
-			if (!os.str().empty()) {
-				int const insetstringsize = os.str().length();
+			docstring const insetstring = os.str();
+			if (!insetstring.empty()) {
+				int const insetstringsize = insetstring.length();
 				for (int j = 0; j < insetstringsize && pos < parsize; ++i, ++j) {
-					if (str[i] != os.str()[j]) {
+					if ((cs && str[i] != insetstring[j])
+					    || (!cs && uppercase(str[i]) != uppercase(insetstring[j]))) {
 						nonmatch = true;
 						break;
 					}