[patch #4354] add --no-recurse-symlinks feature

[Paul Eggert]

Follow-up Comment #1, patch #4354 (project grep):

This should use an option name that is consistent with other GNU
programs.  The usual names for these options are as follows:

  -H, --dereference-command-line
                         follow symbolic links listed on the command line
  -L, --dereference      follow all symbolic links
  -P, --no-dereference   never follow symbolic links

The short names (-H, -L, -P) are specified by POSIX for many
commands, e.g., "ls".  Grep already uses these flags for
something else, but it should use the same long names anyway.

The flags -H, -L, and -P should override each other; the last one
specified on the command line should win.  POSIX requires this
for other programs.

I would say -H should be the default, but that's a judgment call
(it would change the semantics), and perhaps you'd prefer -L.


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