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a +'' yields unexpected behavior #4474

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xxv opened this issue Mar 24, 2017 · 1 comment
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a +'' yields unexpected behavior #4474

xxv opened this issue Mar 24, 2017 · 1 comment
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@xxv
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xxv commented Mar 24, 2017 •
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The Coffeescript:

a + ''

produces the Javascript:

a + '';

Whereas the Coffeescript:

a +''

produces:

a(+'');

which is very surprising. You can see this sketch for all the permutations

Keywords of symbols: plus apostrophe quote whitespace
@xxv xxv changed the title a +' yields unexpected behavior a +'' yields unexpected behavior Mar 24, 2017
@lydell
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lydell commented Mar 24, 2017

Thanks for the very clear issue!

This is simply one of common gotchas of CoffeeScript.

See also previous issues: #2703 #2469 #2754

@lydell lydell closed this as completed Mar 24, 2017
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@xxv @lydell