Johannes Sixt <johannes.sixt@xxxxxxxxxx> writes:
> I need this patch on Windows because appearently progress output is buffered
> by stdio. Why doesn't Linux/glibc's stdio buffer output that goes to a pipe?
> ...
> ... What is flushing the progress
> output?
The standard error stream is not "fully buffered":
http://www.opengroup.org/onlinepubs/000095399/functions/xsh_chap02_05.html#tag_02_05
Not "fully buffered" means either "unbuffered" or "line
buffered". Because the progress display does not terminate its
line, it means that the additional fflush(stderr) you added are
needed if the stream is line buffered (still conforming).
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