repair shortcuts to put the cursor at the center if there is no selection

client/components/codeEditor/customKeyMaps.js

@@ -20,72 +20,142 @@ const indentLess = (view)=>{
 const makeBold = (view)=>{
 	const { from, to } = view.state.selection.main;
 	const selected = view.state.doc.sliceString(from, to);
-	const text = selected.startsWith('**') && selected.endsWith('**')
+
-		? selected.slice(2, -2)
+	let text, cursor;
-		: `**${selected}**`;
+
+	if(from === to) {
+		text = '****';
+		cursor = from + 2;
+	} else if(selected.startsWith('**') && selected.endsWith('**')) {
+		text = selected.slice(2, -2);
+		cursor = from + text.length;
+	} else {
+		text = `**${selected}**`;
+		cursor = from + text.length;
+	}
+
 	view.dispatch({
 		changes   : { from, to, insert: text },
-		selection : { anchor: from + text.length },
+		selection : { anchor: cursor },
 	});
+
 	return true;
 };
 
 const makeItalic = (view)=>{
 	const { from, to } = view.state.selection.main;
 	const selected = view.state.doc.sliceString(from, to);
-	const text = selected.startsWith('*') && selected.endsWith('*')
+
-		? selected.slice(1, -1)
+	let text, cursor;
-		: `*${selected}*`;
+
+	if(from === to) {
+		text = '**';
+		cursor = from + 1;
+	} else if(selected.startsWith('*') && selected.endsWith('*')) {
+		text = selected.slice(2, -2);
+		cursor = from + text.length;
+	} else {
+		text = `*${selected}*`;
+		cursor = from + text.length;
+	}
+
 	view.dispatch({
 		changes   : { from, to, insert: text },
-		selection : { anchor: from + text.length },
+		selection : { anchor: cursor },
 	});
+
 	return true;
 };
 
 const makeUnderline = (view)=>{
 	const { from, to } = view.state.selection.main;
 	const selected = view.state.doc.sliceString(from, to);
-	const text = selected.startsWith('<u>') && selected.endsWith('</u>')
+
-		? selected.slice(3, -4)
+	let text, cursor;
-		: `<u>${selected}</u>`;
+
+	if(from === to) {
+		text = '<u></u>';
+		cursor = from + 3;
+	} else if(selected.startsWith('<u>') && selected.endsWith('</u>')) {
+		text = selected.slice(3, -4);
+		cursor = from + text.length;
+	} else {
+		text = `<u>${selected}</u>`;
+		cursor = from + text.length;
+	}
+
 	view.dispatch({
 		changes   : { from, to, insert: text },
-		selection : { anchor: from + text.length },
+		selection : { anchor: cursor },
 	});
+
 	return true;
 };
-
 const makeSuper = (view)=>{
 	const { from, to } = view.state.selection.main;
 	const selected = view.state.doc.sliceString(from, to);
-	const text = selected.startsWith('^') && selected.endsWith('^')
+
-		? selected.slice(1, -1)
+	let text, cursor;
-		: `^${selected}^`;
+
+	if(from === to) {
+		text = '^^';
+		cursor = from + 1;
+	} else if(selected.startsWith('^') && selected.endsWith('^')) {
+		text = selected.slice(1, -1);
+		cursor = from + text.length;
+	} else {
+		text = `^${selected}^`;
+		cursor = from + text.length;
+	}
+
 	view.dispatch({
 		changes   : { from, to, insert: text },
-		selection : { anchor: from + text.length },
+		selection : { anchor: cursor },
 	});
+
 	return true;
 };
 
 const makeSub = (view)=>{
 	const { from, to } = view.state.selection.main;
 	const selected = view.state.doc.sliceString(from, to);
-	const text = selected.startsWith('^^') && selected.endsWith('^^')
+
-		? selected.slice(2, -2)
+	let text, cursor;
-		: `^^${selected}^^`;
+
+	if(from === to) {
+		text = '^^^^';
+		cursor = from + 2;
+	} else if(selected.startsWith('^^') && selected.endsWith('^^')) {
+		text = selected.slice(2, -2);
+		cursor = from + text.length;
+	} else {
+		text = `^^${selected}^^`;
+		cursor = from + text.length;
+	}
+
 	view.dispatch({
 		changes   : { from, to, insert: text },
-		selection : { anchor: from + text.length },
+		selection : { anchor: cursor },
 	});
+
 	return true;
 };
 
-const makeNbsp = (view)=>{
+const makeNbsp = (view) => {
-	const { from, to } = view.state.selection.main;
+  const { from } = view.state.selection.main;
-	view.dispatch({ changes: { from, to, insert: '&nbsp;' } });
+
-	return true;
+  const prev2 = from >= 2
+    ? view.state.doc.sliceString(from - 2, from)
+    : '';
+
+  const insert = (prev2 === ':>' || prev2 === '>>') ? '>' : ':>';
+
+  view.dispatch({
+    changes: { from, to: from, insert },
+    selection: { anchor: from + insert.length },
+  });
+
+  return true;
 };
 
 const makeSpace = (view)=>{
@@ -193,7 +263,7 @@ export const generalKeymap = Prec.high(keymap.of([
 	{ key: 'Mod-z', run: undo }, //i think it may be unnecessary
 	{ key: 'Mod-Shift-z', run: redo },
 	{ key: 'Mod-y', run: redo },
-	{ key: 'Mod-d', run: deleteLine},
+	{ key: 'Mod-d', run: deleteLine },
 ]));
 
 export const markdownKeymap = Prec.highest(keymap.of([