[Bug 203744] pgrep: -d outputs delimiter as terminator

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203744

            Bug ID: 203744
           Summary: pgrep: -d outputs delimiter as terminator
           Product: Base System
           Version: 10.2-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: bin
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: chneukirchen at gmail.com

Created attachment 161986
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=161986&action=edit
Patch ported from OpenBSD

The -d flag of pgrep is supposed to "Specify a delimiter to be printed between
each process ID."

Instead, the delimiter is also outputted after the final PID, where a newline
should be printed instead:

% pgrep -d, tty
932,931,930,929,928,927,926,925,% _

Contrast with Linux procps-ng 3.3.11, Solaris 5.11 or OpenBSD 5.7:

% pgrep -d, tty
3191,902
% _

Fixed in OpenBSD pkill.c,v 1.8 from 2005/02/11, ported patch against HEAD
attached.

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