The man page bsdgrep(1) says the program won't follow any symbolic links when performing recursive search (with option '-r' or '-R').
But it follows! (try it!)
From the man page:
-O If -R is specified, follow symbolic links only if they were
explicitly listed on the command line. The default is not to
follow symbolic links.
-p If -R is specified, no symbolic links are followed. This is the
-R, -r, --recursive
Recursively search subdirectories listed.
-S If -R is specified, all symbolic links are followed. The default
is not to follow symbolic links.
This seems indicating that the option '-p' was the default, however the actual default was '-S', according to the source code (https://svnweb.freebsd.org/base/head/usr.bin/grep/grep.c?revision=334806&view=markup#l126).
Created attachment 204352 [details]
Created attachment 204353 [details]
The attached 2 patches could fix the program or the man page.