[packages/mksh] - behave as proper sh when invoked as /bin/sh, wothout fancy, incompatible hacks - rel 2

[Kacper Kornet]

On Wed, Dec 17, 2014 at 12:15:09PM +0200, Elan Ruusamäe wrote:
> On 17.12.2014 10:07, Kacper Kornet wrote:
> >>     - behave as proper sh when invoked as /bin/sh, wothout fancy, incompatible hacks
> >>     - rel 2
> >This change breaks our rc-scripts:

> >$ rpm -q mksh
> >mksh-50d-1.x86_64
> >$ /bin/sh -c "echo -en '\n'"

> >$ rpm -q mksh
> >mksh-50d-2.x86_64
> >$ /bin/sh -c "echo -en '\n'"
> >-en \n

> >There was a small discussion about it some time ago:
> >https://lists.pld-linux.org/mailman/pipermail/pld-devel-pl/2011-May/153795.html

> so, our rc-scripts is not using portable shell. what would be
> portable (posix) version of above code that behaves as rc-scripts
> intended?

> printf?

However there is no builtin printf. So every call to it would cost a
fork. Although man mksh says about printf:

    This is not normally part of mksh; however, distributors may have added
    this as builtin as a speed hack.  Do not use in new code.

-- 
  Kacper