The current behavior is not standards conformant, and will cause the
format operation to result in empty text as glibc fails any calls to
getwc against a narrow stream with WEOF. Additionally, narrow write
operations against a wide stream appears to bypass the buffer, causing
incorrect formatting results.
Fix this by changing all write operations against the reformatted output
file stream to be wide operations, and reopening the temporary input
file before performing any wide read operations.
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