Greg A. Woods wrote in
<m1lVNaF-0036urC@more.local>:
|At Sun, 11 Apr 2021 01:37:44 +0700, Robert Elz <k...@munnari.oz.au> wrote:
|Subject: Re: Possible "new" redirect style for /bin/sh (needs a name)
...
|Perhaps the current high FD watermark could even be exposed to the user
|with a new shell variable such as ${CUR_MAX_FD}, but also/instead the
I think this is a good idea. I think using 27>&- is not, i think
assigning to that one would be better, then.
...
|The only thing that immediately jumped into my mind was "dynamic
|redirection".
If starting with va_fds this could eventually end up as stdfds.
(Then VA_FDS_MIN or _START would come to mind.)
P.S.:
I really like the idea! For the MUA i maintain i long have the
idea of variable (I/O) redirections in mind, because for now the
terrible syntax is, for example
? vexpr + 1 1
0b 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000010
02 | 0x2 | 2
? vput vexpr i + 1 1
? echo $i
2
Which was a way to make it work, which is better than not being
able. But it is really weird. Because of the syntax constraints,
i was thinking (and am still looking forward to) things like <
and > (and maybe |) prefixes (as in maybe "? >i vexpr"), but was not
yet sure how to differentiate in between variables (memory) and
file descriptors aka file names. Enclosing braces would be
a thing.
--steffen
|
|Der Kragenbaer, The moon bear,
|der holt sich munter he cheerfully and one by one
|einen nach dem anderen runter wa.ks himself off
|(By Robert Gernhardt)
