Backport: Treat DEL as a control character for determining block caret size.

Moved IsControlCharacter to anonymous namespace.

Backport of changeset 8396:16e8656c36a7.

1 files changed, 6 insertions, 5 deletions

diff --git a/src/EditView.cxx b/src/EditView.cxx
index 35fee11f5..49e77d8db 100644
--- a/src/EditView.cxx
+++ b/src/EditView.cxx
@@ -58,11 +58,6 @@
 
 using namespace Scintilla;
 
-static constexpr bool IsControlCharacter(int ch) noexcept {
-	// iscntrl returns true for lots of chars > 127 which are displayable
-	return ch >= 0 && ch < ' ';
-}
-
 PrintParameters::PrintParameters() noexcept {
 	magnification = 0;
 	colourMode = SC_PRINT_NORMAL;
@@ -369,6 +364,12 @@ inline char CaseForce(Style::ecaseForced caseForce, char chDoc, char chPrevious)
 	}
 }
 
+constexpr bool IsControlCharacter(int ch) noexcept {
+	// iscntrl returns true for lots of chars > 127 which are displayable,
+	// currently only check C0 control characters.
+	return (ch >= 0 && ch < ' ') || (ch == 127);
+}
+
 }
 
 /**