tmp/tmp4q7zr0jo/{from.md → to.md}
RENAMED
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#### `basic_streambuf` virtual functions <a id="streambuf.virtuals">[[streambuf.virtuals]]</a>
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##### Locales <a id="streambuf.virt.locales">[[streambuf.virt.locales]]</a>
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``` cpp
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-
void imbue(const locale&)
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```
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*Effects:* Change any translations based on locale.
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*Remarks:* Allows the derived class to be informed of changes in locale
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@@ -157,11 +157,11 @@ The *pending sequence* is defined as for `underflow()`, with the
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modifications that
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- If `traits::eq_int_type(c,traits::eof())` returns `true`, then the
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input sequence is backed up one character before the pending sequence
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is determined.
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-
- If `traits::eq_int_type(c,traits::eof())`
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prepended. Whether the input sequence is backed up or modified in any
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other way is unspecified.
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On return, the constraints of `gptr()`, `eback()`, and `pptr()` are the
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same as for `underflow()`.
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@@ -179,9 +179,37 @@ Returns some value other than `traits::eof()` to indicate success.
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``` cpp
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streamsize xsputn(const char_type* s, streamsize n);
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```
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``` cpp
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int_type overflow(int_type c = traits::eof());
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```
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#### `basic_streambuf` virtual functions <a id="streambuf.virtuals">[[streambuf.virtuals]]</a>
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##### Locales <a id="streambuf.virt.locales">[[streambuf.virt.locales]]</a>
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``` cpp
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+
void imbue(const locale&);
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```
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*Effects:* Change any translations based on locale.
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*Remarks:* Allows the derived class to be informed of changes in locale
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modifications that
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- If `traits::eq_int_type(c,traits::eof())` returns `true`, then the
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input sequence is backed up one character before the pending sequence
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is determined.
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+
- If `traits::eq_int_type(c,traits::eof())` returns `false`, then `c` is
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prepended. Whether the input sequence is backed up or modified in any
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other way is unspecified.
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On return, the constraints of `gptr()`, `eback()`, and `pptr()` are the
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same as for `underflow()`.
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``` cpp
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streamsize xsputn(const char_type* s, streamsize n);
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```
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*Effects:* Writes up to `n` characters to the output sequence as if by
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repeated calls to `sputc(c)`. The characters written are obtained from
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successive elements of the array whose first element is designated by
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`s`. Writing stops when either `n` characters have been written or a
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call to `sputc(c)` would return `traits::eof()`. Is is unspecified
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whether the function calls `overflow()` when `pptr() == epptr()` becomes
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true or whether it achieves the same effects by other means.
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*Returns:* The number of characters written.
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``` cpp
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int_type overflow(int_type c = traits::eof());
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```
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*Effects:* Consumes some initial subsequence of the characters of the
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*pending sequence*. The pending sequence is defined as the concatenation
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of
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*Remarks:* The member functions `sputc()` and `sputn()` call this
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function in case that no room can be found in the put buffer enough to
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accommodate the argument character sequence.
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*Requires:* Every overriding definition of this virtual function shall
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obey the following constraints:
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*Returns:* `traits::eof()` or throws an exception if the function fails.
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Otherwise, returns some value other than `traits::eof()` to indicate
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success.[^16]
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*Default behavior:* Returns `traits::eof()`.
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