[File] [PATCH] file.1: document limited usefulness of the --apple function

[Kamil Dudka]

Bug: https://bugzilla.redhat.com/1677442
---
 doc/file.man | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/doc/file.man b/doc/file.man
index 978a4b53..1b90c074 100644
--- a/doc/file.man
+++ b/doc/file.man
@@ -170,7 +170,8 @@ in any of the character sets listed above is simply said to be
 Causes the file command to output the file type and creator code as
 used by older MacOS versions.
 The code consists of eight letters,
-the first describing the file type, the latter the creator.
+the first describing the file type, the latter the creator.  This option works
+properly only for file formats that have the apple-style output defined.
 .It Fl b , Fl Fl brief
 Do not prepend filenames to output lines (brief mode).
 .It Fl C , Fl Fl compile
-- 
2.17.2