[PATCH] Several dump.c fixes

[Denys Vlasenko]

Fixed in git, thanks.

We have strcpy_and_process_escape_sequences()
which seems to work fine here, so I used it instead.

On Wed, Aug 24, 2016 at 11:28 AM, Bruno Chevalier
<bmgg.chevalier at gmail.com> wrote:
> Hi everyone,
>
> This is a patch for hexdump and other applications making use of dump.c.
> It did not properly escape format strings.
>
> Example of a format string that failed:
> hexdump -n 6 -e '6/1 "\\x%02x\t\\"' some_file
>
> See also this bug report:
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776096
> On that link we can find a patch supplied by Sergey Romanov
> <shruggy at yandex.ru>, which I ported to busybox.
>
> I have also fixed the conversion of the formfeed character which was being
> converted to a backspace character.
>
>
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