I made a stupid error and posted an old version of this patch. My apologies.
Peter Berbec
47a48,50
> /* If true, output to stderr as well */
> static bool out_to_error;
>
61a65
> {"error", no_argument, NULL, 'e'},
92a97
> -e, --error also output to stderr. negates -p\n\
132a138
> out_to_error = false;
134c140
< while ((optc = getopt_long (argc, argv, "aip", long_options, NULL))
!= -1)
---
> while ((optc = getopt_long (argc, argv, "aeip", long_options,
NULL)) != -1)
137a144,147
> case 'e':
> out_to_error = true;
> break;
>
162a173,175
> if (out_to_error && output_error)
> output_error = output_error_sigpipe;
>
207c220
< descriptors = xnmalloc (nfiles + 1, sizeof *descriptors);
---
> descriptors = xnmalloc (nfiles + (out_to_error?2:1), sizeof
*descriptors);
231a245,253
> if (out_to_error)
> {
> descriptors[i] = stderr;
> files[i] = bad_cast (_("standard error"));
> setvbuf (stderr, NULL, _IONBF, 0);
> n_outputs++;
> nfiles++;
> }
>
250a273,274
> if (descriptors[i] == stderr)
> clearerr (stdout); /* Avoid redundant close_stderr
diagnostic. */
