24 мая 2023 г. 18:05:29 Todd C. Miller <todd.mil...@sudo.ws>:
> On Tue, 23 May 2023 22:22:04 -0000, Klemens Nanni wrote:
>
>> I'm pointing this out because the error message we'd get provides less
>> information with your diff:
>>
>> $ echo $(cat /nope) 2>/dev/null
>> cat: /nope: No such file or directory
>> vs.
>> echo $(< /nope) 2>/dev/null
>> ksh: /nope: cannot open $(<) input
>>
>> But given the constraint environment, I'm fine with turning those four
>> $(cat ...) instances into $(< ...) like the exising seven onces with
>> the intial example being the only outlier.
>
> Here's the error output from bash, zsh and ksh93:
>
> $bash echo $(< /nope)
> bash: /nope: No such file or directory
>
> $zsh echo $(< /nope)
> zsh: no such file or directory: /nope
>
> $ksh93 echo $(< /nope)
> ksh93: /nope: cannot open [No such file or directory]
>
> Maybe we should just adjust ksh to display the more useful message?
> With diff:
>
> $ echo $(< /nope)
> ksh: /nope: No such file or directory
>
> - todd
>
> diff -u -p -u -r1.66 eval.c
> --- bin/ksh/eval.c 13 Sep 2020 15:39:09 -0000 1.66
> +++ bin/ksh/eval.c 24 May 2023 14:03:41 -0000
> @@ -8,6 +8,7 @@
>
> #include <ctype.h>
> #include <dirent.h>
> +#include <errno.h>
> #include <fcntl.h>
> #include <pwd.h>
> #include <stdio.h>
> @@ -909,7 +910,7 @@ comsub(Expand *xp, char *cp)
> SHF_MAPHI|SHF_CLEXEC);
> if (shf == NULL)
> warningf(!Flag(FTALKING),
> - "%s: cannot open $(<) input", name);
> + "%s: %s", name, strerror(errno));
> xp->split = 0; /* no waitlast() */
> } else {
> int ofd1, pv[2];
OK kn
