Fix LineEdit word mode when there are no words

scene/gui/line_edit.cpp

@@ -68,12 +68,17 @@ void LineEdit::_move_caret_left(bool p_select, bool p_move_by_word) {
 		int cc = caret_column;
 
 		PackedInt32Array words = TS->shaped_text_get_word_breaks(text_rid);
+		if (words.is_empty() || cc <= words[0]) {
+			// Move to the start when there are no more words.
+			cc = 0;
+		} else {
 			for (int i = words.size() - 2; i >= 0; i = i - 2) {
 				if (words[i] < cc) {
 					cc = words[i];
 					break;
 				}
 			}
+		}
 
 		set_caret_column(cc);
 	} else {
@@ -101,12 +106,17 @@ void LineEdit::_move_caret_right(bool p_select, bool p_move_by_word) {
 		int cc = caret_column;
 
 		PackedInt32Array words = TS->shaped_text_get_word_breaks(text_rid);
+		if (words.is_empty() || cc >= words[words.size() - 1]) {
+			// Move to the end when there are no more words.
+			cc = text.length();
+		} else {
 			for (int i = 1; i < words.size(); i = i + 2) {
 				if (words[i] > cc) {
 					cc = words[i];
 					break;
 				}
 			}
+		}
 
 		set_caret_column(cc);
 	} else {
@@ -159,12 +169,17 @@ void LineEdit::_backspace(bool p_word, bool p_all_to_left) {
 		int cc = caret_column;
 
 		PackedInt32Array words = TS->shaped_text_get_word_breaks(text_rid);
+		if (words.is_empty() || cc <= words[0]) {
+			// Delete to the start when there are no more words.
+			cc = 0;
+		} else {
 			for (int i = words.size() - 2; i >= 0; i = i - 2) {
 				if (words[i] < cc) {
 					cc = words[i];
 					break;
 				}
 			}
+		}
 
 		delete_text(cc, caret_column);
 
@@ -198,12 +213,17 @@ void LineEdit::_delete(bool p_word, bool p_all_to_right) {
 	if (p_word) {
 		int cc = caret_column;
 		PackedInt32Array words = TS->shaped_text_get_word_breaks(text_rid);
+		if (words.is_empty() || cc >= words[words.size() - 1]) {
+			// Delete to the end when there are no more words.
+			cc = text.length();
+		} else {
 			for (int i = 1; i < words.size(); i = i + 2) {
 				if (words[i] > cc) {
 					cc = words[i];
 					break;
 				}
 			}
+		}
 
 		delete_text(caret_column, cc);
 		set_caret_column(caret_column);

scene/gui/text_edit.cpp

@@ -2393,7 +2393,7 @@ void TextEdit::_move_caret_left(bool p_select, bool p_move_by_word) {
 			} else {
 				PackedInt32Array words = TS->shaped_text_get_word_breaks(text.get_line_data(get_caret_line(i))->get_rid());
 				if (words.is_empty() || cc <= words[0]) {
-					// This solves the scenario where there are no words but glyfs that can be ignored.
+					// Move to the start when there are no more words.
 					cc = 0;
 				} else {
 					for (int j = words.size() - 2; j >= 0; j = j - 2) {
@@ -2450,7 +2450,7 @@ void TextEdit::_move_caret_right(bool p_select, bool p_move_by_word) {
 			} else {
 				PackedInt32Array words = TS->shaped_text_get_word_breaks(text.get_line_data(get_caret_line(i))->get_rid());
 				if (words.is_empty() || cc >= words[words.size() - 1]) {
-					// This solves the scenario where there are no words but glyfs that can be ignored.
+					// Move to the end when there are no more words.
 					cc = text[get_caret_line(i)].length();
 				} else {
 					for (int j = 1; j < words.size(); j = j + 2) {
@@ -2666,7 +2666,7 @@ void TextEdit::_do_backspace(bool p_word, bool p_all_to_left) {
 			// Get a list with the indices of the word bounds of the given text line.
 			const PackedInt32Array words = TS->shaped_text_get_word_breaks(text.get_line_data(get_caret_line(caret_index))->get_rid());
 			if (words.is_empty() || column <= words[0]) {
-				// If "words" is empty, meaning no words are left, we can remove everything until the beginning of the line.
+				// Delete to the start when there are no more words.
 				column = 0;
 			} else {
 				// Otherwise search for the first word break that is smaller than the index from we're currently deleting.
@@ -2731,12 +2731,17 @@ void TextEdit::_delete(bool p_word, bool p_all_to_right) {
 			int column = get_caret_column(caret_index);
 
 			PackedInt32Array words = TS->shaped_text_get_word_breaks(text.get_line_data(line)->get_rid());
+			if (words.is_empty() || column >= words[words.size() - 1]) {
+				// Delete to the end when there are no more words.
+				column = text[get_caret_line(i)].length();
+			} else {
 				for (int j = 1; j < words.size(); j = j + 2) {
 					if (words[j] > column) {
 						column = words[j];
 						break;
 					}
 				}
+			}
 
 			next_line = line;
 			next_column = column;

tests/scene/test_text_edit.h

@@ -4232,6 +4232,18 @@ TEST_CASE("[SceneTree][TextEdit] text entry") {
 			CHECK(text_edit->get_caret_line(0) == 0);
 			CHECK(text_edit->get_caret_column(0) == 4);
 			text_edit->remove_secondary_carets();
+
+			// Remove when there are no words, only symbols.
+			text_edit->set_text("#{}");
+			text_edit->set_caret_line(0);
+			text_edit->set_caret_column(3);
+
+			SEND_GUI_ACTION("ui_text_backspace_word");
+			CHECK(text_edit->get_viewport()->is_input_handled());
+			CHECK_FALSE(text_edit->has_selection());
+			CHECK(text_edit->get_text() == "");
+			CHECK(text_edit->get_caret_line(0) == 0);
+			CHECK(text_edit->get_caret_column(0) == 0);
 		}
 
 		SUBCASE("[TextEdit] ui_text_backspace_word same line") {
@@ -4891,6 +4903,18 @@ TEST_CASE("[SceneTree][TextEdit] text entry") {
 			CHECK(text_edit->get_caret_line(0) == 0);
 			CHECK(text_edit->get_caret_column(0) == 2);
 			text_edit->remove_secondary_carets();
+
+			// Remove when there are no words, only symbols.
+			text_edit->set_text("#{}");
+			text_edit->set_caret_line(0);
+			text_edit->set_caret_column(0);
+
+			SEND_GUI_ACTION("ui_text_delete_word");
+			CHECK(text_edit->get_viewport()->is_input_handled());
+			CHECK_FALSE(text_edit->has_selection());
+			CHECK(text_edit->get_text() == "");
+			CHECK(text_edit->get_caret_line(0) == 0);
+			CHECK(text_edit->get_caret_column(0) == 0);
 		}
 
 		SUBCASE("[TextEdit] ui_text_delete_word same line") {
@@ -5301,6 +5325,16 @@ TEST_CASE("[SceneTree][TextEdit] text entry") {
 			SIGNAL_CHECK("caret_changed", empty_signal_args);
 			SIGNAL_CHECK_FALSE("text_changed");
 			SIGNAL_CHECK_FALSE("lines_edited_from");
+
+			// Move when there are no words, only symbols.
+			text_edit->set_text("#{}");
+			text_edit->set_caret_line(0);
+			text_edit->set_caret_column(3);
+
+			SEND_GUI_ACTION("ui_text_caret_word_left");
+			CHECK(text_edit->get_viewport()->is_input_handled());
+			CHECK(text_edit->get_caret_line(0) == 0);
+			CHECK(text_edit->get_caret_column(0) == 0);
 		}
 
 		SUBCASE("[TextEdit] ui_text_caret_left") {
@@ -5563,6 +5597,16 @@ TEST_CASE("[SceneTree][TextEdit] text entry") {
 			SIGNAL_CHECK("caret_changed", empty_signal_args);
 			SIGNAL_CHECK_FALSE("text_changed");
 			SIGNAL_CHECK_FALSE("lines_edited_from");
+
+			// Move when there are no words, only symbols.
+			text_edit->set_text("#{}");
+			text_edit->set_caret_line(0);
+			text_edit->set_caret_column(0);
+
+			SEND_GUI_ACTION("ui_text_caret_word_right");
+			CHECK(text_edit->get_viewport()->is_input_handled());
+			CHECK(text_edit->get_caret_line(0) == 0);
+			CHECK(text_edit->get_caret_column(0) == 3);
 		}
 
 		SUBCASE("[TextEdit] ui_text_caret_right") {