From f4d5c00424eff7c84b4152b4df4de5c0ba4b12bc Mon Sep 17 00:00:00 2001
From: Ferdinand Oeinck <unknown>
Date: Tue, 4 Oct 2022 09:35:06 +1100
Subject: Feature [feature-requests:#1453] Added
 SCI_STYLESETINVISIBLEREPRESENTATION to make it easier to edit around
 invisible text. This also allows representing long lexemes with a single
 character to provide a summarized view.

---
 src/Editor.cxx | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'src/Editor.cxx')

diff --git a/src/Editor.cxx b/src/Editor.cxx
index 97c141bae..35148299e 100644
--- a/src/Editor.cxx
+++ b/src/Editor.cxx
@@ -5832,6 +5832,19 @@ void Editor::StyleSetMessage(Message iMessage, uptr_t wParam, sptr_t lParam) {
 	case Message::StyleSetVisible:
 		vs.styles[wParam].visible = lParam != 0;
 		break;
+	case Message::StyleSetInvisibleRepresentation: {
+		const char *utf8 = ConstCharPtrFromSPtr(lParam);
+		char *rep = vs.styles[wParam].invisibleRepresentation;
+		const int classified = UTF8Classify(utf8);
+		if (!(classified & UTF8MaskInvalid)) {
+			// valid UTF-8
+			int len = classified & UTF8MaskWidth;
+			while (len--)
+				*rep++ = *utf8++;
+		}
+		*rep = 0;
+		break;
+	}
 	case Message::StyleSetChangeable:
 		vs.styles[wParam].changeable = lParam != 0;
 		break;
@@ -5878,6 +5891,8 @@ sptr_t Editor::StyleGetMessage(Message iMessage, uptr_t wParam, sptr_t lParam) {
 		return vs.styles[wParam].visible ? 1 : 0;
 	case Message::StyleGetChangeable:
 		return vs.styles[wParam].changeable ? 1 : 0;
+	case Message::StyleGetInvisibleRepresentation:
+		return StringResult(lParam, vs.styles[wParam].invisibleRepresentation);
 	case Message::StyleGetHotSpot:
 		return vs.styles[wParam].hotspot ? 1 : 0;
 	case Message::StyleGetCheckMonospaced:
@@ -7328,6 +7343,7 @@ sptr_t Editor::WndProc(Message iMessage, uptr_t wParam, sptr_t lParam) {
 	case Message::StyleSetChangeable:
 	case Message::StyleSetHotSpot:
 	case Message::StyleSetCheckMonospaced:
+	case Message::StyleSetInvisibleRepresentation:
 		StyleSetMessage(iMessage, wParam, lParam);
 		break;
 
@@ -7347,6 +7363,7 @@ sptr_t Editor::WndProc(Message iMessage, uptr_t wParam, sptr_t lParam) {
 	case Message::StyleGetChangeable:
 	case Message::StyleGetHotSpot:
 	case Message::StyleGetCheckMonospaced:
+	case Message::StyleGetInvisibleRepresentation:
 		return StyleGetMessage(iMessage, wParam, lParam);
 
 	case Message::StyleResetDefault:
-- 
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