27 Jun
2016
27 Jun
'16
11:02 p.m.
On Mon, 27 Jun 2016, Ronald Natalie wrote:
That was inherited from the original V7 Bourne shell. And "horrendous"
doesn't even begin to describe that disaster of coding.
On Jun 27, 2016, at 6:27 AM, Sven Mascheck
<mascheck(a)in-ulm.de> wrote:
On Sun, Jun 26, 2016 at 01:32:23PM -0500, Ronald Natalie wrote:
Sure, it was a long time ago, but I’ll tell you what I remember. The
one thing I do remember is that the SV /bin/sh was written in these
horrendous macros that sort of made it look like algol or something. I added JOB control to the SV (and later SVR2)
Bourne Shell.
Then they beat on me for not having command like editing in (a la TCSH),
so I added that.
How interesting, I will try to bother you (perhaps directly) about
in-depth informations :-)
When the SVR2 shell came out, someone (not Bourne
obviously) had undone
all those in favor of the native C++ if/else/while blocking.
I kind-of like the MS-DOS 5 approach of having a separate tool that the
shell can optionally link to that provides those capabilities.
*ducks and runs*
-uso.
I've always been intrigued by the fact that traditional Bourne shell and
Almquist shell haven't implemented history or command line editing.
Command line editing might have been implemented in the driver as
enhanced editing in “cooked” mode, but the history is a bit more context
specific.