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v0.5.1
https://github.com/python/cpython
Revision cffe0467ab7b164739693598826bd3860f01b11f authored by Miss Islington (bot) on 23 February 2018, 18:22:27 UTC, committed by GitHub on 23 February 2018, 18:22:27 UTC

`whilst` and `while` are both english words, `whilst` is not as commonly used.
This can be confusing to readers whose primary language is not english.
(cherry picked from commit 98f42aac23f3863973cb6e9964c5212cfd3a1d98)

Co-authored-by: Mariatta <Mariatta@users.noreply.github.com>
1 parent 9c819a6
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Tip revision: cffe0467ab7b164739693598826bd3860f01b11f authored by Miss Islington (bot) on 23 February 2018, 18:22:27 UTC
bpo-32923: Unittest doc: replace `whilst` with `while` (GH-5833)
Tip revision: cffe046
dup2.c
/*
 * Public domain dup2() lookalike
 * by Curtis Jackson @ AT&T Technologies, Burlington, NC
 * electronic address:  burl!rcj
 *
 * dup2 performs the following functions:
 *
 * Check to make sure that fd1 is a valid open file descriptor.
 * Check to see if fd2 is already open; if so, close it.
 * Duplicate fd1 onto fd2; checking to make sure fd2 is a valid fd.
 * Return fd2 if all went well; return BADEXIT otherwise.
 */

#include <fcntl.h>
#include <unistd.h>

#define BADEXIT -1

int
dup2(int fd1, int fd2)
{
	if (fd1 != fd2) {
		if (fcntl(fd1, F_GETFL) < 0)
			return BADEXIT;
		if (fcntl(fd2, F_GETFL) >= 0)
			close(fd2);
		if (fcntl(fd1, F_DUPFD, fd2) < 0)
			return BADEXIT;
	}
	return fd2;
}
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