master ec6a73e0d32 1/2: Fix 'find-ls-option-default-ls' for BSD/MacOS (bug#62096)

[Eli Zaretskii]

branch: master
commit ec6a73e0d3206255fe422cd248d6be959f50aec9
Author: Manuel Giraud <manuel@ledu-giraud.fr>
Commit: Eli Zaretskii <eliz@gnu.org>

    Fix 'find-ls-option-default-ls' for BSD/MacOS (bug#62096)
    
    * lisp/find-dired.el (find-gnu-find-p): New variable to determine
    if "find" is a GNU find.
    (find-ls-option-default-ls): Use 'find-gnu-find-p' and adapt to a
    value that works with the default "find" on *BSD and Darwin/MacOS.
    Tested on OpenBSD and MacOS.
---
 lisp/find-dired.el | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lisp/find-dired.el b/lisp/find-dired.el
index 33376ee4ed9..264c6e3082f 100644
--- a/lisp/find-dired.el
+++ b/lisp/find-dired.el
@@ -50,8 +50,13 @@ than the latter."
   :group 'find-dired
   :type 'string)
 
+(defvar find-gnu-find-p
+  (eq 0 (ignore-errors
+          (process-file find-program nil nil nil null-device "--version")))
+  "T if 'find-program' is a GNU find.  NIL otherwise.")
+
 (defvar find-ls-option-default-ls
-  (cons "-ls" (if (eq system-type 'berkeley-unix) "-gilsb" "-dilsb")))
+  (cons "-ls" (if find-gnu-find-p "-dilsb" "-dgils")))
 
 (defvar find-ls-option-default-exec
   (cons (format "-exec ls -ld {} %s" find-exec-terminator) "-ld"))