Klemens Nanni wrote:
On Sat, Oct 06, 2018 at 09:38:42PM +0200, John Ankarström wrote:
Is there a way for ksh to expand a $(command substitution) without having to
execute the entire line?
No.
That's too bad.
bash provides this via shell-expand-line (bound to Ctrl-Alt-e by default),
From bash(1):
shell-expand-line (M-C-e)
Expand the line as the shell does. This performs alias and
history expansion as well as all of the shell word expansions.
And yet, it disregards quoting and will errornously expand the following
example into multiple words instead of one:
bash-4.4$ echo "$(echo a b)"
bash-4.4$ echo a b
There is a discussion about this behavior on the bug-bash mailing list:
https://lists.gnu.org/archive/html/bug-bash/2016-11/msg00010.html
Turns out to be a relatively simple fix, but the old behavior will
remain the default (as of 2016).
and ksh seems to have expand-file, but that only works for filenames.
We have no other expanding functions.
Would there be any interest among the pdksh developers in a function
like shell-expand-line (but which works properly), if somebody like me
did the work?
Best regards,
John
