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email address parsing correction #108

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email address parsing correction #108

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8 changes: 4 additions & 4 deletions punycode.js
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Original file line number Diff line number Diff line change
Expand Up @@ -70,13 +70,13 @@ function map(array, callback) {
* function.
*/
function mapDomain(domain, callback) {
const parts = domain.split('@');
const atPos = domain.lastIndexOf('@');
let result = '';
if (parts.length > 1) {
if (atPos > -1) {
// In email addresses, only the domain name should be punycoded. Leave
// the local part (i.e. everything up to `@`) intact.
result = parts[0] + '@';
domain = parts[1];
result = domain.substring(0, atPos + 1);
domain = domain.substring(atPos + 1);
}
// Avoid `split(regex)` for IE8 compatibility. See #17.
domain = domain.replace(regexSeparators, '\x2E');
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5 changes: 5 additions & 0 deletions tests/tests.js
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Expand Up @@ -216,6 +216,11 @@ const testData = {
{ // https:/mathiasbynens/punycode.js/pull/115
'decoded': 'foo\x7F.example',
'encoded': 'foo\x7F.example'
},
{
"description": "Email address that includes multiple at signs",
"decoded": "\"very.(),:;<>[]\\\".VERY.\\\"@very@\\ \\\"very\\\".unusual\"@\uD83D\uDCA9.la",
"encoded": "\"very.(),:;<>[]\\\".VERY.\\\"@very@\\ \\\"very\\\".unusual\"@xn--ls8h.la"
}
],
'separators': [
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