Match cursorSave and cursorRestore escape codes (#45)

Co-authored-by: Qix <Qix-@users.noreply.github.com>
Co-authored-by: Sindre Sorhus <sindresorhus@gmail.com>

Author: 3 people

fixtures/ansi-codes.js

@@ -15,10 +15,12 @@ export const vt52Codes = new Map([
 	['>', ['Exit alternate keypad mode']],
 	['1', ['Graphics processor on']],
 	['2', ['Graphics processor off']],
-	['<', ['Enter ANSI mode']]
+	['<', ['Enter ANSI mode']],
+	['s', ['Cursor save']],
+	['u', ['Cursor restore']]
 ]);
 
-// From http://www.umich.edu/~archive/apple2/misc/programmers/vt100.codes.txt
+// From https://espterm.github.io/docs/VT100%20escape%20codes.html
 export const ansiCompatible = new Map([
 	['[176A', ['Cursor up Pn lines']],
 	['[176B', ['Cursor down Pn lines']],

index.js

@@ -1,7 +1,7 @@
 export default function ansiRegex({onlyFirst = false} = {}) {
 	const pattern = [
 		'[\\u001B\\u009B][[\\]()#;?]*(?:(?:(?:(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]+)*|[a-zA-Z\\d]+(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]*)*)?\\u0007)',
-		'(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PR-TZcf-ntqry=><~]))'
+		'(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PR-TZcf-nq-uy=><~]))'
 	].join('|');
 
 	return new RegExp(pattern, onlyFirst ? undefined : 'g');

package.json

@@ -51,6 +51,7 @@
 		"pattern"
 	],
 	"devDependencies": {
+		"ansi-escapes": "^5.0.0",
 		"ava": "^3.15.0",
 		"tsd": "^0.14.0",
 		"xo": "^0.38.2"

test.js

@@ -1,4 +1,5 @@
 import test from 'ava';
+import ansiEscapes from 'ansi-escapes';
 import * as ansiCodes from './fixtures/ansi-codes.js';
 import ansiRegex from './index.js';
 
@@ -92,3 +93,28 @@ for (const codeSet of Object.keys(ansiCodes)) {
 		});
 	}
 }
+
+const escapeCodeFunctionArgs = [1, 2];
+const escapeCodeIgnoresList = new Set(['beep', 'image', 'iTerm']);
+const escapeCodeResultMap = new Map([['link', escapeCodeFunctionArgs[0]]]);
+
+for (const key of Object.keys(ansiEscapes)) {
+	if (escapeCodeIgnoresList.has(key)) {
+		continue;
+	}
+
+	const escapeCode = ansiEscapes[key];
+
+	const escapeCodeValue = typeof escapeCode === 'function' ?
+		escapeCode(...escapeCodeFunctionArgs) :
+		escapeCode;
+
+	test(`ansi-escapes ${key}`, t => {
+		for (const character of consumptionCharacters) {
+			const string = escapeCodeValue + character;
+			const result = (escapeCodeResultMap.get(key) || '') + character;
+
+			t.is(string.replace(ansiRegex(), ''), result);
+		}
+	});
+}