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fix multiple emojis in a row causing additional empty tokens being added #16

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fix multiple emojis in a row causing additional empty tokens being added #16

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3 changes: 2 additions & 1 deletion lib/rfc2047.js
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Original file line number Diff line number Diff line change
Expand Up @@ -246,7 +246,8 @@ rfc2047.encode = (text) => {
}

// Word contains at least one header unsafe char, an encoded word must be created.
if (token.length > maxNumCharsPerEncodedWord) {
// Don't check string length directly as emojis can be longer than 1 char.
if ([...token].length > maxNumCharsPerEncodedWord) {
nextTokenMustBeEncoded = true;
const chars = [...token];
tokens.splice(
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4 changes: 2 additions & 2 deletions test/rfc2047.js
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Original file line number Diff line number Diff line change
Expand Up @@ -50,9 +50,9 @@ describe('rfc2047', () => {
// https://github.com/One-com/rfc2047/issues/11
it('should handle a string with multiple emojis in a row', () => {
expect(
'Seven hills😍🦌',
'Seven hills 😍🦌😍🦌😍 no extra spaces',
'to encode back and forth to',
'Seven =?utf-8?Q?hills=F0=9F=98=8D=F0=9F=A6=8C?='
'Seven hills =?utf-8?Q?=F0=9F=98=8D=F0=9F=A6=8C=F0=9F=98=8D=F0=9F=A6=8C=F0=9F=98=8D?= no extra spaces'
);
});

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