[Bug 292408] synopsis of wc command

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292408

            Bug ID: 292408
           Summary: synopsis of wc command
           Product: Documentation
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: Manual Pages
          Assignee: bugs@FreeBSD.org
          Reporter: sebastian.2013@ritter.biz
                CC: doc@FreeBSD.org

(so less priority as available)

The synopsis of wc command is not correct, because c and m flag are not
together usable.

Manual file part...

SYNOPSIS
     wc [--libxo] [-Lclmw] [file ...]
...

-c      ... This will cancel out any prior usage of the -m option.
...
-m      ... This will cancel out any prior usage of the -c option.


This is different to GNU implementation, because GNU wc supports both flags
together. But the problem is only the not clarify SYNOPSIS or the
implementation allow both together


Source code part /usr/bin/wc/wc.c lines 104 / 111:
while ((ch = getopt(argc, argv, "clmwL")) != -1)
                switch((char)ch) {
                case 'l':
                        doline = true;
                        break;
                case 'w':
                        doword = true;
                        break;
                case 'c':
                        dochar = true;
                        domulti = false;
                        break;
                case 'L':
                        dolongline = true;
                        break;
                case 'm':
                        domulti = true;
                        dochar = false;
                        break;
                case '?':
                default:
                        usage();
                }

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