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1 | # wcwidth
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2 |
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3 | Determine columns needed for a fixed-size wide-character string
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4 |
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5 | ----
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6 |
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7 | wcwidth is a simple JavaScript port of [wcwidth](http://man7.org/linux/man-pages/man3/wcswidth.3.html) implemented in C by Markus Kuhn.
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8 |
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9 | JavaScript port [originally](https://github.com/mycoboco/wcwidth.js) written by Woong Jun <woong.jun@gmail.com> (http://code.woong.org/)
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10 |
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11 | ## Example
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12 |
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13 | ```js
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14 | '한'.length // => 1
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15 | wcwidth('한'); // => 2
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16 |
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17 | '한글'.length // => 2
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18 | wcwidth('한글'); // => 4
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19 | ```
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20 |
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21 | `wcwidth()` and its string version, `wcswidth()` are defined by IEEE Std
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22 | 1002.1-2001, a.k.a. POSIX.1-2001, and return the number of columns used
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23 | to represent the given wide character and string.
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24 |
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25 | Markus's implementation assumes the wide character given to those
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26 | functions to be encoded in ISO 10646, which is almost true for
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27 | JavaScript's characters.
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28 |
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29 | [Further explaination here](docs)
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30 |
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31 | ## License
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32 |
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33 | MIT
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