mercurial/ui.py

50897:6ca865080479

            b'starting pager for command %s\n' % stringutil.pprint(command)
        )
        self.flush()

        wasformatted = self.formatted()
        if util.safehasattr(signal, b"SIGPIPE"):
            signal.signal(signal.SIGPIPE, _catchterm)
        if self._runpager(pagercmd, pagerenv):
            self.pageractive = True
            # Preserve the formatted-ness of the UI. This is important
            # because we mess with stdout, which might confuse

        if self._isatty(procutil.stderr):
            os.dup2(pager.stdin.fileno(), procutil.stderr.fileno())

        @self.atexit
        def killpager():
            if util.safehasattr(signal, b"SIGINT"):
                signal.signal(signal.SIGINT, signal.SIG_IGN)
            # restore original fds, closing pager.stdin copies in the process
            os.dup2(stdoutfd, procutil.stdout.fileno())
            os.dup2(stderrfd, procutil.stderr.fileno())
            pager.stdin.close()

50898:29ce50726ce0

            b'starting pager for command %s\n' % stringutil.pprint(command)
        )
        self.flush()

        wasformatted = self.formatted()
        if util.safehasattr(signal, "SIGPIPE"):
            signal.signal(signal.SIGPIPE, _catchterm)
        if self._runpager(pagercmd, pagerenv):
            self.pageractive = True
            # Preserve the formatted-ness of the UI. This is important
            # because we mess with stdout, which might confuse

        if self._isatty(procutil.stderr):
            os.dup2(pager.stdin.fileno(), procutil.stderr.fileno())

        @self.atexit
        def killpager():
            if util.safehasattr(signal, "SIGINT"):
                signal.signal(signal.SIGINT, signal.SIG_IGN)
            # restore original fds, closing pager.stdin copies in the process
            os.dup2(stdoutfd, procutil.stdout.fileno())
            os.dup2(stderrfd, procutil.stderr.fileno())
            pager.stdin.close()