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doc: add a note to `buf.fill()` description

PR-URL: #25547
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
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vsemozhetbyt committed Jan 17, 2019
1 parent 2e613a9 commit c1ac57888199ba13df7eda4912cdb53dcfb5a2ee
Showing with 3 additions and 1 deletion.
  1. +3 −1 doc/api/buffer.md
@@ -1238,7 +1238,9 @@ console.log(b.toString());
// Prints: hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
```

`value` is coerced to a `uint32` value if it is not a string or integer.
`value` is coerced to a `uint32` value if it is not a string, `Buffer`, or
integer. If the resulting integer is greater than `255` (decimal), `buf` will be
filled with `0`.

If the final write of a `fill()` operation falls on a multi-byte character,
then only the bytes of that character that fit into `buf` are written:

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